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Title: Photo-induced halide redistribution in organic–inorganic perovskite films

Abstract

Organic-inorganic perovskites such as CH3NH3PbI3 are promising materials for a variety of optoelectronic applications, with certified power conversion efficiencies in solar cells already exceeding 21%. Nevertheless, state-of-the-art films still contain performance-limiting non-radiative recombination sites and exhibit a range of complex dynamic phenomena under illumination that remain poorly understood. Here we use a unique combination of confocal photoluminescence (PL) microscopy and chemical imaging to correlate the local changes in photophysics with composition in CH3NH3PbI3 films under illumination. We demonstrate that the photo-induced 'brightening' of the perovskite PL can be attributed to an order-of-magnitude reduction in trap state density. By imaging the same regions with time-of-flight secondary-ion-mass spectrometry, we correlate this photobrightening with a net migration of iodine. In conclusion, our work provides visual evidence for photo-induced halide migration in triiodide perovskites and reveals the complex interplay between charge carrier populations, electronic traps and mobile halides that collectively impact optoelectronic performance.

Authors:
 [1];  [2];  [3];  [4];  [5];  [6];  [6];  [5];  [1];  [7]
  1. Univ. of Washington, Seattle, WA (United States). Dept. of Chemistry
  2. Univ. of Lincoln, Lincoln (United Kingdom). School of Chemistry
  3. Univ. of Oxford, Oxford (United Kingdom). Dept. of Physics; Mathematical Inst., OCCAM
  4. Univ. of Washington, Seattle, WA (United States). Dept. of Bioengineering
  5. Univ. of Oxford, Oxford (United Kingdom). Dept. of Physics
  6. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Research Laboratory of Electronics
  7. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Research Laboratory of Electronics; Cavendish Laboratory, Cambridge (United Kingdom)
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States).
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1282930
Grant/Contract Number:  
SC0013957; SC0001088  
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 7; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; solar-cells; anomalous hysteresis; lead-iodide; single-crystals; thin-films; photoluminescence; CH3NH3PbI3; electron; diffusion; recombination

Citation Formats

deQuilettes, Dane W., Zhang, Wei, Burlakov, Victor M., Graham, Daniel J., Leijtens, Tomas, Osherov, Anna, Bulovic, Vladimir, Snaith, Henry J., Ginger, David S., and Stranks, Samuel D. Photo-induced halide redistribution in organic–inorganic perovskite films. United States: N. p., 2016. Web. doi:10.1038/ncomms11683.
deQuilettes, Dane W., Zhang, Wei, Burlakov, Victor M., Graham, Daniel J., Leijtens, Tomas, Osherov, Anna, Bulovic, Vladimir, Snaith, Henry J., Ginger, David S., & Stranks, Samuel D. Photo-induced halide redistribution in organic–inorganic perovskite films. United States. https://doi.org/10.1038/ncomms11683
deQuilettes, Dane W., Zhang, Wei, Burlakov, Victor M., Graham, Daniel J., Leijtens, Tomas, Osherov, Anna, Bulovic, Vladimir, Snaith, Henry J., Ginger, David S., and Stranks, Samuel D. Tue . "Photo-induced halide redistribution in organic–inorganic perovskite films". United States. https://doi.org/10.1038/ncomms11683. https://www.osti.gov/servlets/purl/1282930.
@article{osti_1282930,
title = {Photo-induced halide redistribution in organic–inorganic perovskite films},
author = {deQuilettes, Dane W. and Zhang, Wei and Burlakov, Victor M. and Graham, Daniel J. and Leijtens, Tomas and Osherov, Anna and Bulovic, Vladimir and Snaith, Henry J. and Ginger, David S. and Stranks, Samuel D.},
abstractNote = {Organic-inorganic perovskites such as CH3NH3PbI3 are promising materials for a variety of optoelectronic applications, with certified power conversion efficiencies in solar cells already exceeding 21%. Nevertheless, state-of-the-art films still contain performance-limiting non-radiative recombination sites and exhibit a range of complex dynamic phenomena under illumination that remain poorly understood. Here we use a unique combination of confocal photoluminescence (PL) microscopy and chemical imaging to correlate the local changes in photophysics with composition in CH3NH3PbI3 films under illumination. We demonstrate that the photo-induced 'brightening' of the perovskite PL can be attributed to an order-of-magnitude reduction in trap state density. By imaging the same regions with time-of-flight secondary-ion-mass spectrometry, we correlate this photobrightening with a net migration of iodine. In conclusion, our work provides visual evidence for photo-induced halide migration in triiodide perovskites and reveals the complex interplay between charge carrier populations, electronic traps and mobile halides that collectively impact optoelectronic performance.},
doi = {10.1038/ncomms11683},
journal = {Nature Communications},
number = ,
volume = 7,
place = {United States},
year = {Tue May 24 00:00:00 EDT 2016},
month = {Tue May 24 00:00:00 EDT 2016}
}

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  • Nature Communications, Vol. 7, Issue 1
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Consolidation of the optoelectronic properties of CH3NH3PbBr3 perovskite single crystals
journal, September 2017


Transformation from crystalline precursor to perovskite in PbCl2-derived MAPbI3
journal, August 2018


Opportunities and challenges for tandem solar cells using metal halide perovskite semiconductors
journal, July 2018


Visualization and suppression of interfacial recombination for high-efficiency large-area pin perovskite solar cells
journal, July 2018

  • Stolterfoht, Martin; Wolff, Christian M.; Márquez, José A.
  • Nature Energy, Vol. 3, Issue 10
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Structural and Photophysical Properties of Methylammonium Lead Tribromide (MAPbBr3) Single Crystals
journal, October 2017


Electric Bias Induced Degradation in Organic-Inorganic Hybrid Perovskite Light-Emitting Diodes
journal, October 2018


Elimination of the J–V hysteresis of planar perovskite solar cells by interfacial modification with a thermo-cleavable fullerene derivative
journal, January 2016

  • Xu, Qian; Lu, Zhen; Zhu, Lifeng
  • Journal of Materials Chemistry A, Vol. 4, Issue 45
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Iodide-ion conduction in methylammonium lead iodide perovskite: some extraordinary aspects
journal, January 2019

  • De Souza, Roger A.; Barboni, Denis
  • Chemical Communications, Vol. 55, Issue 8
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Achievable high V oc of carbon based all-inorganic CsPbIBr 2 perovskite solar cells through interface engineering
journal, January 2019

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  • Journal of Materials Chemistry A, Vol. 7, Issue 3
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An optical fibre-based sensor for the detection of gaseous ammonia with methylammonium lead halide perovskite
journal, January 2018

  • Ruan, Shuai; Lu, Jianfeng; Pai, Narendra
  • Journal of Materials Chemistry C, Vol. 6, Issue 26
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Broadband white-light emission from supramolecular piperazinium-based lead halide perovskites linked by hydrogen bonds
journal, January 2019

  • Jung, Mi-Hee; Ko, Kyoung Chul; Lee, Woo Ram
  • Dalton Transactions, Vol. 48, Issue 40
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Directly imaging the structure–property correlation of perovskites in crystalline microwires
journal, January 2019

  • Zhang, Xiao-Wei; Yang, Zhen-Qian; Li, Jing-Zhen
  • Journal of Materials Chemistry A, Vol. 7, Issue 21
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Unravelling steady-state bulk recombination dynamics in thick efficient vacuum-deposited perovskite solar cells by transient methods
journal, January 2019

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  • Journal of Materials Chemistry A, Vol. 7, Issue 24
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Magnetron-sputtering deposited molybdenum carbide MXene thin films as a saturable absorber for passively Q-switched lasers
journal, January 2020

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  • Journal of Materials Chemistry C, Vol. 8, Issue 5
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Research Update: Luminescence in lead halide perovskites
journal, September 2016

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In situ investigation of light soaking in organolead halide perovskite films
journal, April 2019

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Hydration of mixed halide perovskites investigated by Fourier transform infrared spectroscopy
journal, March 2019

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Research progress on organic–inorganic halide perovskite materials and solar cells
journal, February 2018


Modeling hybrid perovskites by molecular dynamics
journal, November 2016

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  • Journal of Physics: Condensed Matter, Vol. 29, Issue 4
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Light-induced effects on crystal size and photo-stability of colloidal CsPbBr 3 perovskite nanocrystals
journal, January 2019

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  • Materials Research Express, Vol. 6, Issue 4
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Inorganic–organic halide perovskites for new photovoltaic technology
journal, August 2017

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  • National Science Review, Vol. 5, Issue 4
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High open-circuit voltages in lead-halide perovskite solar cells: experiment, theory and open questions
journal, July 2019

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Light-induced lattice expansion leads to high-efficiency perovskite solar cells
journal, April 2018

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  • Science, Vol. 360, Issue 6384
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Back-Contact Perovskite Solar Cells
journal, January 2018

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  • Scientific Video Protocols, Vol. 1, Issue 1
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Long-Term Stabilization of Two-Dimensional Perovskites by Encapsulation with Hexagonal Boron Nitride
journal, August 2019

  • Seitz, Michael; Gant, Patricia; Castellanos-Gomez, Andres
  • Nanomaterials, Vol. 9, Issue 8
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Nanostructured Perovskite Solar Cells
journal, October 2019

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  • Nanomaterials, Vol. 9, Issue 10
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Loss analysis in perovskite photovoltaic modules
text, January 2019


Ions Matter: Description of the Anomalous Electronic Behavior in Methylammonium Lead Halide Perovskite Devices
journal, March 2017

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  • Advanced Functional Materials, Vol. 27, Issue 16
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Photonic Organolead Halide Perovskite Artificial Synapse Capable of Accelerated Learning at Low Power Inspired by Dopamine-Facilitated Synaptic Activity
journal, December 2018

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  • Advanced Functional Materials, Vol. 29, Issue 5
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Variations of Infiltration and Electronic Contact in Mesoscopic Perovskite Solar Cells Revealed by High‐Resolution Multi‐Mapping Techniques
journal, April 2019

  • Lakhiani, Harry; Dunlop, Tom; De Rossi, Francesca
  • Advanced Functional Materials, Vol. 29, Issue 25
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Reduced Efficiency Roll‐Off and Improved Stability of Mixed 2D/3D Perovskite Light Emitting Diodes by Balancing Charge Injection
journal, July 2019

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  • Advanced Functional Materials, Vol. 29, Issue 37
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Radiation Hardness and Self-Healing of Perovskite Solar Cells
journal, August 2016

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  • Advanced Materials, Vol. 28, Issue 39
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Fully Solution-Processed n-i-p-Like Perovskite Solar Cells with Planar Junction: How the Charge Extracting Layer Determines the Open-Circuit Voltage
journal, January 2017

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  • Advanced Materials, Vol. 29, Issue 15
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Electrical Stress Influences the Efficiency of CH 3 NH 3 PbI 3 Perovskite Light Emitting Devices
journal, April 2017


Organic-Inorganic Hybrid Halide Perovskites for Memories, Transistors, and Artificial Synapses
journal, May 2018


From Nanostructural Evolution to Dynamic Interplay of Constituents: Perspectives for Perovskite Solar Cells
journal, March 2018

  • Hwang, Taehyun; Lee, Byungho; Kim, Jinhyun
  • Advanced Materials, Vol. 30, Issue 42
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Imaging Heterogeneously Distributed Photo‐Active Traps in Perovskite Single Crystals
journal, February 2018


Self-Healing Inside APbBr 3 Halide Perovskite Crystals
journal, January 2018

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Efficient Perovskite Solar Cells Fabricated Through CsCl-Enhanced PbI 2 Precursor via Sequential Deposition
journal, August 2018


A Highly Emissive Surface Layer in Mixed‐Halide Multication Perovskites
journal, September 2019

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  • Advanced Materials, Vol. 31, Issue 42
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Energy Level Alignment at Interfaces in Metal Halide Perovskite Solar Cells
journal, March 2020

  • Wang, Shenghao; Sakurai, Takeaki; Wen, Weijia
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Strong Quantum Confinement and Fast Photoemission Activation in CH 3 NH 3 PbI 3 Perovskite Nanocrystals Grown within Periodically Mesostructured Films
journal, March 2017

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  • Advanced Optical Materials, Vol. 5, Issue 8
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Unraveling Photostability of Mixed Cation Perovskite Films in Extreme Environment
journal, August 2018

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  • Advanced Optical Materials, Vol. 6, Issue 20
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Creation and Annihilation of Nonradiative Recombination Centers in Polycrystalline Metal Halide Perovskites by Alternating Electric Field and Light
journal, December 2019

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  • Advanced Optical Materials, Vol. 8, Issue 4
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Phase Segregation Enhanced Ion Movement in Efficient Inorganic CsPbIBr 2 Solar Cells
journal, July 2017

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Halogen Engineering for Operationally Stable Perovskite Solar Cells via Sequential Deposition
journal, November 2019


Rapid Layer‐Specific Annealing Enabled by Ultraviolet LED with Estimation of Crystallization Energy for High‐Performance Perovskite Solar Cells
journal, November 2019

  • Ouyang, Zhongliang; Abrams, Henry; Bergstone, Robert
  • Advanced Energy Materials, Vol. 10, Issue 4
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Imaging Metal Halide Perovskites Material and Properties at the Nanoscale
journal, December 2019


Chemical Approaches for Stabilizing Perovskite Solar Cells
journal, November 2019


Revealing the Self-Degradation Mechanisms in Methylammonium Lead Iodide Perovskites in Dark and Vacuum
journal, April 2018

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The physics of ion migration in perovskite solar cells: Insights into hysteresis, device performance, and characterization
journal, November 2019

  • Lan, Dongchen
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Real-Time Observation of Iodide Ion Migration in Methylammonium Lead Halide Perovskites
journal, September 2017


IonMonger: a free and fast planar perovskite solar cell simulator with coupled ion vacancy and charge carrier dynamics
journal, September 2019

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  • Journal of Computational Electronics, Vol. 18, Issue 4
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Large lattice distortions and size-dependent bandgap modulation in epitaxial halide perovskite nanowires
journal, January 2020


Photoluminescence, optical gain, and lasing threshold in CH 3 NH 3 PbI 3 methylammonium lead-halide perovskites obtained by ab initio calculations
journal, January 2017

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The use of ion-selective membranes to study cation transport in hybrid organic–inorganic perovskites
journal, January 2019

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Limitations of a polymer-based hole transporting layer for application in planar inverted perovskite solar cells
journal, January 2019

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Laser induced ion migration in all-inorganic mixed halide perovskite micro-platelets
journal, January 2019

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Understanding the mechanism of metal-induced degradation in perovskite nanocrystals
journal, January 2019

  • Saris, Seryio; Niemann, Valerie; Mantella, Valeria
  • Nanoscale, Vol. 11, Issue 41
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Research Update: Recombination and open-circuit voltage in lead-halide perovskites
journal, October 2018

  • Kirchartz, Thomas; Krückemeier, Lisa; Unger, Eva L.
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Ion induced passivation of grain boundaries in perovskite solar cells
journal, May 2019

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  • Journal of Applied Physics, Vol. 125, Issue 17
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Efficient and stable solution-processed planar perovskite solar cells via contact passivation
journal, February 2017


Maximizing and stabilizing luminescence from halide perovskites with potassium passivation
journalarticle, January 2018

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  • Springer Nature
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The Impact of Atmosphere on the Local Luminescence Properties of Metal Halide Perovskite Grains.
text, January 2018

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The Physics of Light Emission in Halide Perovskite Devices.
journalarticle, January 2019


Influence of Grain Size on Phase Transitions in Halide Perovskite Films
text, January 2019

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Controlling competing photochemical reactions stabilizes perovskite solar cells
text, January 2019


Light-induced picosecond rotational disordering of the inorganic sublattice in hybrid perovskites
text, January 2017

  • Wu, Xiaoxi; Tan, Liang Z.; Shen, Xiaozhe
  • Columbia University
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Band-Tail Recombination in Hybrid Lead Iodide Perovskite
journal, June 2017

  • Wright, Adam D.; Milot, Rebecca L.; Eperon, Giles E.
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Direct Observation of Halide Migration and its Effect on the Photoluminescence of Methylammonium Lead Bromide Perovskite Single Crystals
journal, September 2017

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  • Advanced Materials, Vol. 29, Issue 43
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Nonradiative Recombination in Perovskite Solar Cells: The Role of Interfaces
journal, October 2019

  • Wolff, Christian M.; Caprioglio, Pietro; Stolterfoht, Martin
  • Advanced Materials, Vol. 31, Issue 52
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Energy Level Alignment at Interfaces in Metal Halide Perovskite Solar Cells
journal, July 2018

  • Wang, Shenghao; Sakurai, Takeaki; Wen, Weijia
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Inorganic Lead Halide Perovskite Single Crystals: Phase-Selective Low-Temperature Growth, Carrier Transport Properties, and Self-Powered Photodetection
journal, December 2016

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Unraveling the Light-Induced Degradation Mechanisms of CH 3 NH 3 PbI 3 Perovskite Films
journal, November 2017

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Memristors with organic‐inorganic halide perovskites
journal, May 2019


Role of Water and Defects in Photo‐Oxidative Degradation of Methylammonium Lead Iodide Perovskite
journal, April 2019


Ion Migration: A “Double‐Edged Sword” for Halide‐Perovskite‐Based Electronic Devices
journal, November 2019


Radiation Hardness of Perovskite Solar Cells Based on Aluminum‐Doped Zinc Oxide Electrode Under Proton Irradiation
journal, September 2019


Understanding the physical properties of hybrid perovskites for photovoltaic applications
journal, July 2017


Maximizing and stabilizing luminescence from halide perovskites with potassium passivation
journal, March 2018

  • Abdi-Jalebi, Mojtaba; Andaji-Garmaroudi, Zahra; Cacovich, Stefania
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Defects in perovskite-halides and their effects in solar cells
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Phase segregation due to ion migration in all-inorganic mixed-halide perovskite nanocrystals
journal, March 2019


Defects engineering for high-performance perovskite solar cells
journal, August 2018


Controlling competing photochemical reactions stabilizes perovskite solar cells
journal, May 2019


Heterogeneity at multiple length scales in halide perovskite semiconductors
journal, July 2019

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Understanding surface chemistry during MAPbI 3 spray deposition and its effect on photovoltaic performance
journal, January 2017

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  • Journal of Materials Chemistry C, Vol. 5, Issue 4
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Identification of high-temperature exciton states and their phase-dependent trapping behaviour in lead halide perovskites
journal, January 2018

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A facile synthesis of two new IR optical perovskites based on 1,4-diazabicyclo[2,2,2]octane with a high laser damage threshold
journal, January 2018

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CH 3 NH 3 PbI 3 perovskite thin films as a saturable absorber for a passively Q-switched Nd:YAG laser
journal, January 2019

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Inhomogeneous degradation in metal halide perovskites
journal, August 2017

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Can we use time-resolved measurements to get steady-state transport data for halide perovskites?
journal, September 2018

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Light-induced picosecond rotational disordering of the inorganic sublattice in hybrid perovskites
journal, July 2017


Lattice strain causes non-radiative losses in halide perovskites
text, January 2019

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Metal-encapsulated organolead halide perovskite photocathode for solar-driven hydrogen evolution in water.
journalarticle, January 2016

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The Relationship between Chemical Flexibility and Nanoscale Charge Collection in Hybrid Halide Perovskites
journal, March 2018

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Ion-Migration Inhibition by the Cation-π Interaction in Perovskite Materials for Efficient and Stable Perovskite Solar Cells
journal, June 2018


Crystallinity Preservation and Ion Migration Suppression through Dual Ion Exchange Strategy for Stable Mixed Perovskite Solar Cells
journal, May 2017

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Interface Engineering for Highly Efficient and Stable Planar p-i-n Perovskite Solar Cells
journal, November 2017

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Low-Dimensional Perovskites: From Synthesis to Stability in Perovskite Solar Cells
journal, September 2018

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Highly Stable All-Inorganic Perovskite Solar Cells Processed at Low Temperature
journal, May 2018


Inorganic CsPbI 2 Br Perovskite Solar Cells: The Progress and Perspective
journal, October 2018


Loss Analysis in Perovskite Photovoltaic Modules
journal, September 2019

  • Rakocevic, Lucija; Mundt, Laura E.; Gehlhaar, Robert
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Fast oxygen diffusion and iodide defects mediate oxygen-induced degradation of perovskite solar cells
journal, May 2017

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Dipolar cations confer defect tolerance in wide-bandgap metal halide perovskites
journal, August 2018


Graphite-protected CsPbBr3 perovskite photoanodes functionalised with water oxidation catalyst for oxygen evolution in water
journal, May 2019


Effect of density of surface defects on photoluminescence properties in MAPbI 3 perovskite films
journal, January 2019

  • Fassl, Paul; Zakharko, Yuriy; Falk, Lukas M.
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Operational stability of perovskite light emitting diodes
journal, January 2020


In situ investigation of light soaking in organolead halide perovskite films
text, January 2019


Imperfections and their passivation in halide perovskite solar cells
text, January 2019

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  • The University of North Carolina at Chapel Hill University Libraries
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Heterogeneity at multiple length scales in halide perovskite semiconductors
text, January 2019

  • Tennyson, Beth; Doherty, Tas; Stranks, Samuel
  • Apollo - University of Cambridge Repository
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Nonradiative Recombination in Perovskite Solar Cells: The Role of Interfaces
text, January 2019


Elucidating the Long-range Charge Carrier Mobility in Metal Halide Perovskite Thin Films
conference, February 2019

  • Lim, Jongchul; Wenger, Bernard; Snaith, Henry
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Giant Zero-Drift Electronic Behaviors in Methylammonium Lead Halide Perovskite Diodes by Doping Iodine Ions
journal, September 2018

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Spontaneous Enhancement of the Stable Power Conversion Efficiency in Perovskite Solar Cells
text, January 2019


SnO 2 ‐in‐Polymer Matrix for High‐Efficiency Perovskite Solar Cells with Improved Reproducibility and Stability
journal, November 2018


Impact of White Light Illumination on the Electronic and Chemical Structures of Mixed Halide and Single Crystal Perovskites
journal, March 2017

  • Zu, Feng-Shuo; Amsalem, Patrick; Salzmann, Ingo
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Recent Advances in Memory Devices with Hybrid Materials
journal, October 2018


Role of Microstructure in Oxygen Induced Photodegradation of Methylammonium Lead Triiodide Perovskite Films
journal, July 2017

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Large tunable photoeffect on ion conduction in halide perovskites and implications for photodecomposition
journal, March 2018


Detecting and identifying reversible changes in perovskite solar cells by electrochemical impedance spectroscopy
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Gold and iodine diffusion in large area perovskite solar cells under illumination.
text, January 2017

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Defect Engineering toward Highly Efficient and Stable Perovskite Solar Cells
journal, July 2018

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Capturing the Sun: A Review of the Challenges and Perspectives of Perovskite Solar Cells
journal, June 2017

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Impact of Structural Dynamics on the Optical Properties of Methylammonium Lead Iodide Perovskites
journal, June 2017

  • Panzer, Fabian; Li, Cheng; Meier, Tobias
  • Advanced Energy Materials, Vol. 7, Issue 16
  • DOI: 10.1002/aenm.201700286

Hybrid perovskite light emitting diodes under intense electrical excitation
journal, November 2018


High-performance and moisture-stable perovskite solar cells with a 2D modified layer via introducing a high dipole moment cation
journal, January 2019

  • Xu, Huifen; Sun, Yuhai; Zheng, Haiying
  • Journal of Materials Chemistry C, Vol. 7, Issue 48
  • DOI: 10.1039/c9tc05227e

How Methylammonium Cations and Chlorine Dopants Heal Defects in Lead Iodide Perovskites
journalarticle, January 2018


Elucidating the long-range charge carrier mobility in metal halide perovskite thin films
text, January 2018


Long-Term Stabilization of Two-Dimensional Perovskites by Encapsulation with Hexagonal Boron Nitride
text, January 2020


Reversible Removal of Intermixed Shallow States by Light Soaking in Multication Mixed Halide Perovskite Films
journal, September 2019


Photoluminescence Blinking of Single-Crystal Methylammonium Lead Iodide Perovskite Nanorods Induced by Surface Traps
journal, July 2016


Defect-induced local variation of crystal phase transition temperature in metal-halide perovskites
journal, June 2017


Dipolar cations confer defect tolerance in wide-bandgap metal halide perovskites
journal, August 2018


Transformation from crystalline precursor to perovskite in PbCl2-derived MAPbI3
journal, August 2018


Hybrid perovskite light emitting diodes under intense electrical excitation
journal, November 2018


Unravelling the role of vacancies in lead halide perovskite through electrical switching of photoluminescence
journal, November 2018


Phase segregation due to ion migration in all-inorganic mixed-halide perovskite nanocrystals
journal, March 2019


Microscopic insight into non-radiative decay in perovskite semiconductors from temperature-dependent luminescence blinking
journal, April 2019


Graphite-protected CsPbBr3 perovskite photoanodes functionalised with water oxidation catalyst for oxygen evolution in water
journal, May 2019


Large lattice distortions and size-dependent bandgap modulation in epitaxial halide perovskite nanowires
journal, January 2020


Structural and Photophysical Properties of Methylammonium Lead Tribromide (MAPbBr3) Single Crystals
journal, October 2017


Electric Bias Induced Degradation in Organic-Inorganic Hybrid Perovskite Light-Emitting Diodes
journal, October 2018


Giant Zero-Drift Electronic Behaviors in Methylammonium Lead Halide Perovskite Diodes by Doping Iodine Ions
journal, September 2018

  • Pang, Tiqiang; Jia, Renxu; Wang, Yucheng
  • Materials, Vol. 11, Issue 9
  • DOI: 10.3390/ma11091606

Nanostructured Perovskite Solar Cells
journal, October 2019

  • McDonald, Calum; Ni, Chengsheng; Maguire, Paul
  • Nanomaterials, Vol. 9, Issue 10
  • DOI: 10.3390/nano9101481

Visualizing buried local carrier diffusion in halide perovskite crystals via two-photon microscopy
preprint, January 2019


Nanoscale charge accumulation and its effect on carrier dynamics in tri-cation perovskite structures
preprint, January 2020


Long-Term Stabilization of Two-Dimensional Perovskites by Encapsulation with Hexagonal Boron Nitride
text, January 2020


Light-induced picosecond rotational disordering of the inorganic sublattice in hybrid perovskites
text, January 2017

  • Wu, Xiaoxi; Tan, Liang Z.; Shen, Xiaozhe
  • Columbia University
  • DOI: 10.7916/d8sr0bbc