Perovskite Quantum Dot Photovoltaic Materials beyond the Reach of Thin Films: Full-Range Tuning of A-Site Cation Composition

Hazarika, Abhijit; Zhao, Qian; Gaulding, E. Ashley; Christians, Jeffrey A.; Dou, Benjia; Marshall, Ashley R.; Moot, Taylor; Berry, Joseph J.; Johnson, Justin C.; Luther, Joseph M.

doi:10.1021/acsnano.8b05555

Title: Perovskite Quantum Dot Photovoltaic Materials beyond the Reach of Thin Films: Full-Range Tuning of A-Site Cation Composition

Abstract

We present a cation-exchange approach for tunable A-site alloys of cesium (Cs⁺) and formamidinium (FA⁺) lead triiodide perovskite nanocrystals that enables the formation of compositions spanning the complete range of Cs_1-xFA_xPbI₃, unlike thin-film alloys or the direct synthesis of alloyed perovskite nanocrystals. These materials show bright and finely tunable emission in the red and near-infrared range between 650 and 800 nm. The activation energy for the miscibility between Cs⁺ and FA⁺ is measured (~0.65 eV) and is shown to be higher than reported for X-site exchange in lead halide perovskites. We use these alloyed colloidal perovskite quantum dots to fabricate photovoltaic devices. In addition to the expanded compositional range for Cs_1-xFA_xPbI₃ materials, the quantum dot solar cells exhibit high open-circuit voltage (VOC) with a lower loss than the thin-film perovskite devices of similar compositions.

Authors:

^[1]; Zhao, Qian ^[2]; Gaulding, E. Ashley ^[1];

^[1]; Dou, Benjia ^[3]; Marshall, Ashley R. ^[1]; Moot, Taylor ^[1];

^[1];

^[1]

National Renewable Energy Lab. (NREL), Golden, CO (United States)
National Renewable Energy Lab. (NREL), Golden, CO (United States); Nankai Univ., Tianjin (China)
National Renewable Energy Lab. (NREL), Golden, CO (United States); Univ. of Colorado, Boulder, CO (United States)

Publication Date:: 2018-09-25

Research Org.:: Energy Frontier Research Centers (EFRC) (United States). Center for Advanced Solar Photophysics (CASP); National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office

OSTI Identifier:: 1476707

Report Number(s):: NREL/JA-5900-71956
Journal ID: ISSN 1936-0851

Grant/Contract Number:: AC36-08GO28308

Resource Type:: Accepted Manuscript

Journal Name:: ACS Nano

Additional Journal Information:: Journal Volume: 12; Journal Issue: 10; Journal ID: ISSN 1936-0851

Publisher:: American Chemical Society (ACS)

Country of Publication:: United States

Language:: English

Subject:: 14 SOLAR ENERGY; 77 NANOSCIENCE AND NANOTECHNOLOGY; A-site alloying; cation exchange; lead halide; nanocrystals; perovskites; quantum dots; solar cells

Citation Formats


                    Hazarika, Abhijit, Zhao, Qian, Gaulding, E. Ashley, Christians, Jeffrey A., Dou, Benjia, Marshall, Ashley R., Moot, Taylor, Berry, Joseph J., Johnson, Justin C., and Luther, Joseph M. Perovskite Quantum Dot Photovoltaic Materials beyond the Reach of Thin Films: Full-Range Tuning of A-Site Cation Composition.  United States: N. p., 2018. 
Web.  doi:10.1021/acsnano.8b05555.

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                    Hazarika, Abhijit, Zhao, Qian, Gaulding, E. Ashley, Christians, Jeffrey A., Dou, Benjia, Marshall, Ashley R., Moot, Taylor, Berry, Joseph J., Johnson, Justin C., & Luther, Joseph M. Perovskite Quantum Dot Photovoltaic Materials beyond the Reach of Thin Films: Full-Range Tuning of A-Site Cation Composition.  United States.  https://doi.org/10.1021/acsnano.8b05555

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                    Hazarika, Abhijit, Zhao, Qian, Gaulding, E. Ashley, Christians, Jeffrey A., Dou, Benjia, Marshall, Ashley R., Moot, Taylor, Berry, Joseph J., Johnson, Justin C., and Luther, Joseph M. Tue .  
"Perovskite Quantum Dot Photovoltaic Materials beyond the Reach of Thin Films: Full-Range Tuning of A-Site Cation Composition".  United States.  https://doi.org/10.1021/acsnano.8b05555.  https://www.osti.gov/servlets/purl/1476707.

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@article{osti_1476707,

  title        = {Perovskite Quantum Dot Photovoltaic Materials beyond the Reach of Thin Films: Full-Range Tuning of A-Site Cation Composition},

  author       = {Hazarika, Abhijit and Zhao, Qian and Gaulding, E. Ashley and Christians, Jeffrey A. and Dou, Benjia and Marshall, Ashley R. and Moot, Taylor and Berry, Joseph J. and Johnson, Justin C. and Luther, Joseph M.},

  abstractNote = {We present a cation-exchange approach for tunable A-site alloys of cesium (Cs+) and formamidinium (FA+) lead triiodide perovskite nanocrystals that enables the formation of compositions spanning the complete range of Cs1-xFAxPbI3, unlike thin-film alloys or the direct synthesis of alloyed perovskite nanocrystals. These materials show bright and finely tunable emission in the red and near-infrared range between 650 and 800 nm. The activation energy for the miscibility between Cs+ and FA+ is measured (~0.65 eV) and is shown to be higher than reported for X-site exchange in lead halide perovskites. We use these alloyed colloidal perovskite quantum dots to fabricate photovoltaic devices. In addition to the expanded compositional range for Cs1-xFAxPbI3 materials, the quantum dot solar cells exhibit high open-circuit voltage (VOC) with a lower loss than the thin-film perovskite devices of similar compositions.},

  doi          = {10.1021/acsnano.8b05555},

  journal      = {ACS Nano},

  number       = 10,

  volume       = 12,

  place        = {United States},

  year         = {2018},

  month        = {9}

}

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Figure 1: A-site ion exchange to form phase stable Cs_1−xFA_xPbI₃ NCs. (A) Schematic diagram showing the cross-exchange of Cs⁺ and FA⁺ ions between CsPbI₃ and FAPbI₃ perovskite NCs. (B) Goldschmidt tolerance factor as a function of FA₊ ion concentration shows that all compositions are expected to be phase-stable (the purplemore »

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Endres, James; Egger, David A.; Kulbak, Michael
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Ravi, Vikash Kumar; Markad, Ganesh B.; Nag, Angshuman
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Cation-Induced Band-Gap Tuning in Organohalide Perovskites: Interplay of Spin–Orbit Coupling and Octahedra Tilting
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Amat, Anna; Mosconi, Edoardo; Ronca, Enrico
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First-Principles Study of Ion Diffusion in Perovskite Solar Cell Sensitizers
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Haruyama, Jun; Sodeyama, Keitaro; Han, Liyuan
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Visualization and Studies of Ion-Diffusion Kinetics in Cesium Lead Bromide Perovskite Nanowires
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Pan, Dongxu; Fu, Yongping; Chen, Jie
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µ-Graphene Crosslinked CsPbI ₃ Quantum Dots for High Efficiency Solar Cells with Much Improved Stability
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Wang, Qian; Jin, Zhiwen; Chen, Da
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Wheeler, Lance M.; Sanehira, Erin M.; Marshall, Ashley R.
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Caraballo, Frank; Kumano, Masataka; Saeki, Akinori
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Detailed Balance Limit of Efficiency of p‐n Junction Solar Cells
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Shockley, William; Queisser, Hans J.
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Spray‐Coated Colloidal Perovskite Quantum Dot Films for Highly Efficient Solar Cells
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Yuan, Jifeng; Bi, Chenghao; Wang, Shixun
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Quantum Dot Based Solar Cells: Role of Nanoarchitectures, Perovskite Quantum Dots, and Charge‐Transporting Layers
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Shaikh, Jasmin S.; Shaikh, Navajsharif S.; Mali, Sawanta S.
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Quantum Dots for Hybrid Energy Harvesting: From Integration to Piezo‐Phototronics
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Cho, Yuljae; Pak, Sangyeon; An, Geon‐Hyoung
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Facile Room‐Temperature Anion Exchange Reactions of Inorganic Perovskite Quantum Dots Enabled by a Modular Microfluidic Platform
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Abdel‐Latif, Kameel; Epps, Robert W.; Kerr, Corwin B.
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CsI‐Antisolvent Adduct Formation in All‐Inorganic Metal Halide Perovskites
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Moot, Taylor; Marshall, Ashley R.; Wheeler, Lance M.
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Zhu, Xiaolin; Lin, Yixiong; San Martin, Jovan
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Conductivity Tuning via Doping with Electron Donating and Withdrawing Molecules in Perovskite CsPbI ₃ Nanocrystal Films
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Gaulding, E. Ashley; Hao, Ji; Kang, Hyun Suk
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Ligand-assisted cation-exchange engineering for high-efficiency colloidal Cs1−xFAxPbI3 quantum dot solar cells with reduced phase segregation
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Hao, Mengmeng; Bai, Yang; Zeiske, Stefan
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Lead halide perovskites for photocatalytic organic synthesis
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Zhu, Xiaolin; Lin, Yixiong; San Martin, Jovan
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High efficiency perovskite quantum dot solar cells with charge separating heterostructure
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Zhao, Qian; Hazarika, Abhijit; Chen, Xihan
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Enhanced Open-Circuit Voltage of Wide-Bandgap Perovskite Photovoltaics by Using Alloyed (FA_1–xCs_x)Pb(I_1–xBr_x)₃ Quantum Dots

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Title: Perovskite Quantum Dot Photovoltaic Materials beyond the Reach of Thin Films: Full-Range Tuning of A-Site Cation Composition

Abstract

Citation Formats

Figures / Tables:

Intriguing Optoelectronic Properties of Metal Halide Perovskites journal, June 2016

Iodide management in formamidinium-lead-halide–based perovskite layers for efficient solar cells journal, June 2017

Organohalide Perovskites for Solar Energy Conversion journal, February 2016

Organohalide lead perovskites for photovoltaic applications journal, January 2014

Metal-halide perovskites for photovoltaic and light-emitting devices journal, May 2015

A Long-Term View on Perovskite Optoelectronics journal, January 2016

Bright light-emitting diodes based on organometal halide perovskite journal, August 2014

Light-Emitting Electrochemical Cells Based on Hybrid Lead Halide Perovskite Nanoparticles journal, May 2015

Perovskite energy funnels for efficient light-emitting diodes journal, June 2016

Halide Perovskites: Poor Man's High-Performance Semiconductors journal, May 2016

Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells journal, May 2009

Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites journal, October 2012

Semiconducting Tin and Lead Iodide Perovskites with Organic Cations: Phase Transitions, High Mobilities, and Near-Infrared Photoluminescent Properties journal, July 2013

Tailored interfaces of unencapsulated perovskite solar cells for >1,000 hour operational stability journal, January 2018

Stabilizing Perovskite Structures by Tuning Tolerance Factor: Formation of Formamidinium and Cesium Lead Iodide Solid-State Alloys journal, December 2015

High-Performance Formamidinium-Based Perovskite Solar Cells via Microstructure-Mediated δ-to-α Phase Transformation journal, March 2017

Formamidinium and Cesium Hybridization for Photo- and Moisture-Stable Perovskite Solar Cell journal, September 2015

Entropic stabilization of mixed A-cation ABX 3 metal halide perovskites for high performance perovskite solar cells journal, January 2016

Spray reaction prepared FA 1−x Cs x PbI 3 solid solution as a light harvester for perovskite solar cells with improved humidity stability journal, January 2016

Die Gesetze der Krystallochemie journal, May 1926

Solid-state principles applied to organic–inorganic perovskites: new tricks for an old dog journal, January 2014

The emergence of perovskite solar cells journal, July 2014

On the application of the tolerance factor to inorganic and hybrid halide perovskites: a revised system journal, January 2016

Organic–Inorganic Perovskites: Structural Versatility for Functional Materials Design journal, March 2016

Dismantling the “Red Wall” of Colloidal Perovskites: Highly Luminescent Formamidinium and Formamidinium–Cesium Lead Iodide Nanocrystals journal, March 2017

Matching Charge Extraction Contact for Wide-Bandgap Perovskite Solar Cells journal, May 2017

Tailoring the Open-Circuit Voltage Deficit of Wide-Band-Gap Perovskite Solar Cells Using Alkyl Chain-Substituted Fullerene Derivatives journal, June 2018

Thermal engineering of FAPbI3 perovskite material via radiative thermal annealing and in situ XRD journal, January 2017

Inorganic caesium lead iodide perovskite solar cells journal, January 2015

Phase Segregation in Potassium-Doped Lead Halide Perovskites from 39 K Solid-State NMR at 21.1 T journal, May 2018

Single crystals of caesium formamidinium lead halide perovskites: solution growth and gamma dosimetry journal, April 2017

Cation Exchange Reactions in Ionic Nanocrystals. journal, February 2005

Utilizing the Lability of Lead Selenide to Produce Heterostructured Nanocrystals with Bright, Stable Infrared Emission journal, April 2008

Synthesis of PbS Nanorods and Other Ionic Nanocrystals of Complex Morphology by Sequential Cation Exchange Reactions journal, November 2009

Ion Exchange Synthesis of III–V Nanocrystals journal, November 2012

Single-Nanocrystal Reaction Trajectories Reveal Sharp Cooperative Transitions journal, January 2014

Cu 3- x P Nanocrystals as a Material Platform for Near-Infrared Plasmonics and Cation Exchange Reactions journal, January 2015

Sequential Cation Exchange in Nanocrystals: Preservation of Crystal Phase and Formation of Metastable Phases journal, November 2011

From Binary Cu 2 S to Ternary Cu–In–S and Quaternary Cu–In–Zn–S Nanocrystals with Tunable Composition via Partial Cation Exchange journal, January 2015

Cation exchange on the nanoscale: an emerging technique for new material synthesis, device fabrication, and chemical sensing journal, January 2013

Fast Anion-Exchange in Highly Luminescent Nanocrystals of Cesium Lead Halide Perovskites (CsPbX 3 , X = Cl, Br, I) journal, July 2015

Tuning the Optical Properties of Cesium Lead Halide Perovskite Nanocrystals by Anion Exchange Reactions journal, August 2015

All-inorganic cesium lead halide perovskite nanocrystals for photodetector applications journal, January 2016

Highly Luminescent Colloidal Nanoplates of Perovskite Cesium Lead Halide and Their Oriented Assemblies journal, December 2015

Surface- vs Diffusion-Limited Mechanisms of Anion Exchange in CsPbBr 3 Nanocrystal Cubes Revealed through Kinetic Studies journal, September 2016

Room-Temperature Construction of Mixed-Halide Perovskite Quantum Dots with High Photoluminescence Quantum Yield journal, January 2018

Nanocrystals of Cesium Lead Halide Perovskites (CsPbX 3 , X = Cl, Br, and I): Novel Optoelectronic Materials Showing Bright Emission with Wide Color Gamut journal, February 2015

Colloidal CsPbBr 3 Perovskite Nanocrystals: Luminescence beyond Traditional Quantum Dots journal, November 2015

Low-threshold amplified spontaneous emission and lasing from colloidal nanocrystals of caesium lead halide perovskites journal, August 2015

High performance hybrid graphene–CsPbBr 3−x I x perovskite nanocrystal photodetector journal, January 2016

Structure-Tuned Lead Halide Perovskite Nanocrystals journal, November 2015

Water resistant CsPbX 3 nanocrystals coated with polyhedral oligomeric silsesquioxane and their use as solid state luminophores in all-perovskite white light-emitting devices journal, January 2016

Lasing in robust cesium lead halide perovskite nanowires journal, February 2016

Highly Efficient Perovskite-Quantum-Dot Light-Emitting Diodes by Surface Engineering journal, August 2016

Quantum dot-induced phase stabilization of -CsPbI3 perovskite for high-efficiency photovoltaics journal, October 2016

Influence of ligand shell ordering on dimensional confinement of cesium lead bromide (CsPbBr 3 ) perovskite nanoplatelets journal, January 2017

Light Absorption Coefficient of CsPbBr 3 Perovskite Nanocrystals journal, May 2018

Properties and potential optoelectronic applications of lead halide perovskite nanocrystals journal, November 2017

Highly Efficient Visible Colloidal Lead-Halide Perovskite Nanocrystal Light-Emitting Diodes journal, April 2018

Microfluidic Reactors Provide Preparative and Mechanistic Insights into the Synthesis of Formamidinium Lead Halide Perovskite Nanocrystals journal, September 2017

Precise Control of Quantum Confinement in Cesium Lead Halide Perovskite Quantum Dots via Thermodynamic Equilibrium journal, May 2018

Genesis, challenges and opportunities for colloidal lead halide perovskite nanocrystals journal, February 2018

Enhanced mobility CsPbI 3 quantum dot arrays for record-efficiency, high-voltage photovoltaic cells journal, October 2017

Highly stable cesium lead iodide perovskite quantum dot light-emitting diodes journal, October 2017

Exploration of Near-Infrared-Emissive Colloidal Multinary Lead Halide Perovskite Nanocrystals Using an Automated Microfluidic Platform journal, May 2018

Dynamic Evolution of 2D Layers within Perovskite Nanocrystals via Salt Pair Extraction and Reinsertion journal, December 2017

A Novel Organometallic Synthesis of Highly Luminescent CdTe Nanocrystals journal, March 2001

Measurement and assignment of the size-dependent optical spectrum in CdSe quantum dots journal, June 1996

Size-Dependent Spectroscopy of InP Quantum Dots journal, June 1997

Colloidal Atomic Layer Deposition (c-ALD) using Self-Limiting Reactions at Nanocrystal Surface Coupled to Phase Transfer between Polar and Nonpolar Media journal, November 2012

High-temperature structural evolution of caesium and rubidium triiodoplumbates journal, October 2008

The Renaissance of Halide Perovskites and Their Evolution as Emerging Semiconductors journal, September 2015

Cubic Perovskite Structure of Black Formamidinium Lead Iodide, α-[HC(NH 2 ) 2 ]PbI 3 , at 298 K journal, July 2015

Reentrant Structural and Optical Properties and Large Positive Thermal Expansion in Perovskite Formamidinium Lead Iodide journal, November 2016

Phase Behavior and Polymorphism of Formamidinium Lead Iodide journal, May 2018

Highly Dynamic Ligand Binding and Light Absorption Coefficient of Cesium Lead Bromide Perovskite Nanocrystals journal, January 2016

Intriguing Optoelectronic Properties of Metal Halide Perovskites
journal, June 2016

Iodide management in formamidinium-lead-halide–based perovskite layers for efficient solar cells
journal, June 2017

Organohalide Perovskites for Solar Energy Conversion
journal, February 2016

Organohalide lead perovskites for photovoltaic applications
journal, January 2014

Metal-halide perovskites for photovoltaic and light-emitting devices
journal, May 2015

A Long-Term View on Perovskite Optoelectronics
journal, January 2016

Bright light-emitting diodes based on organometal halide perovskite
journal, August 2014

Light-Emitting Electrochemical Cells Based on Hybrid Lead Halide Perovskite Nanoparticles
journal, May 2015

Perovskite energy funnels for efficient light-emitting diodes
journal, June 2016

Halide Perovskites: Poor Man's High-Performance Semiconductors
journal, May 2016

Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells
journal, May 2009

Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites
journal, October 2012

Semiconducting Tin and Lead Iodide Perovskites with Organic Cations: Phase Transitions, High Mobilities, and Near-Infrared Photoluminescent Properties
journal, July 2013

Tailored interfaces of unencapsulated perovskite solar cells for >1,000 hour operational stability
journal, January 2018

Stabilizing Perovskite Structures by Tuning Tolerance Factor: Formation of Formamidinium and Cesium Lead Iodide Solid-State Alloys
journal, December 2015

High-Performance Formamidinium-Based Perovskite Solar Cells via Microstructure-Mediated δ-to-α Phase Transformation
journal, March 2017

Formamidinium and Cesium Hybridization for Photo- and Moisture-Stable Perovskite Solar Cell
journal, September 2015

Entropic stabilization of mixed A-cation ABX ₃ metal halide perovskites for high performance perovskite solar cells
journal, January 2016

Spray reaction prepared FA _1−x Cs _x PbI ₃ solid solution as a light harvester for perovskite solar cells with improved humidity stability
journal, January 2016

Die Gesetze der Krystallochemie
journal, May 1926

Solid-state principles applied to organic–inorganic perovskites: new tricks for an old dog
journal, January 2014

The emergence of perovskite solar cells
journal, July 2014

On the application of the tolerance factor to inorganic and hybrid halide perovskites: a revised system
journal, January 2016

Organic–Inorganic Perovskites: Structural Versatility for Functional Materials Design
journal, March 2016

Dismantling the “Red Wall” of Colloidal Perovskites: Highly Luminescent Formamidinium and Formamidinium–Cesium Lead Iodide Nanocrystals
journal, March 2017

Matching Charge Extraction Contact for Wide-Bandgap Perovskite Solar Cells
journal, May 2017

Tailoring the Open-Circuit Voltage Deficit of Wide-Band-Gap Perovskite Solar Cells Using Alkyl Chain-Substituted Fullerene Derivatives
journal, June 2018

Thermal engineering of FAPbI3 perovskite material via radiative thermal annealing and in situ XRD
journal, January 2017

Inorganic caesium lead iodide perovskite solar cells
journal, January 2015

Phase Segregation in Potassium-Doped Lead Halide Perovskites from ³⁹ K Solid-State NMR at 21.1 T
journal, May 2018

Single crystals of caesium formamidinium lead halide perovskites: solution growth and gamma dosimetry
journal, April 2017

Cation Exchange Reactions in Ionic Nanocrystals.
journal, February 2005

Utilizing the Lability of Lead Selenide to Produce Heterostructured Nanocrystals with Bright, Stable Infrared Emission
journal, April 2008

Synthesis of PbS Nanorods and Other Ionic Nanocrystals of Complex Morphology by Sequential Cation Exchange Reactions
journal, November 2009

Ion Exchange Synthesis of III–V Nanocrystals
journal, November 2012

Single-Nanocrystal Reaction Trajectories Reveal Sharp Cooperative Transitions
journal, January 2014

Cu _{3- x} P Nanocrystals as a Material Platform for Near-Infrared Plasmonics and Cation Exchange Reactions
journal, January 2015

Sequential Cation Exchange in Nanocrystals: Preservation of Crystal Phase and Formation of Metastable Phases
journal, November 2011

From Binary Cu ₂ S to Ternary Cu–In–S and Quaternary Cu–In–Zn–S Nanocrystals with Tunable Composition via Partial Cation Exchange
journal, January 2015

Cation exchange on the nanoscale: an emerging technique for new material synthesis, device fabrication, and chemical sensing
journal, January 2013

Fast Anion-Exchange in Highly Luminescent Nanocrystals of Cesium Lead Halide Perovskites (CsPbX ₃ , X = Cl, Br, I)
journal, July 2015

Tuning the Optical Properties of Cesium Lead Halide Perovskite Nanocrystals by Anion Exchange Reactions
journal, August 2015

All-inorganic cesium lead halide perovskite nanocrystals for photodetector applications
journal, January 2016

Highly Luminescent Colloidal Nanoplates of Perovskite Cesium Lead Halide and Their Oriented Assemblies
journal, December 2015

Surface- vs Diffusion-Limited Mechanisms of Anion Exchange in CsPbBr ₃ Nanocrystal Cubes Revealed through Kinetic Studies
journal, September 2016

Room-Temperature Construction of Mixed-Halide Perovskite Quantum Dots with High Photoluminescence Quantum Yield
journal, January 2018

Nanocrystals of Cesium Lead Halide Perovskites (CsPbX ₃ , X = Cl, Br, and I): Novel Optoelectronic Materials Showing Bright Emission with Wide Color Gamut
journal, February 2015

Colloidal CsPbBr ₃ Perovskite Nanocrystals: Luminescence beyond Traditional Quantum Dots
journal, November 2015

Low-threshold amplified spontaneous emission and lasing from colloidal nanocrystals of caesium lead halide perovskites
journal, August 2015

High performance hybrid graphene–CsPbBr _3−x I _x perovskite nanocrystal photodetector
journal, January 2016

Structure-Tuned Lead Halide Perovskite Nanocrystals
journal, November 2015

Water resistant CsPbX ₃ nanocrystals coated with polyhedral oligomeric silsesquioxane and their use as solid state luminophores in all-perovskite white light-emitting devices
journal, January 2016

Lasing in robust cesium lead halide perovskite nanowires
journal, February 2016

Highly Efficient Perovskite-Quantum-Dot Light-Emitting Diodes by Surface Engineering
journal, August 2016

Quantum dot-induced phase stabilization of -CsPbI3 perovskite for high-efficiency photovoltaics
journal, October 2016

Influence of ligand shell ordering on dimensional confinement of cesium lead bromide (CsPbBr ₃ ) perovskite nanoplatelets
journal, January 2017

Light Absorption Coefficient of CsPbBr ₃ Perovskite Nanocrystals
journal, May 2018

Properties and potential optoelectronic applications of lead halide perovskite nanocrystals
journal, November 2017

Highly Efficient Visible Colloidal Lead-Halide Perovskite Nanocrystal Light-Emitting Diodes
journal, April 2018

Microfluidic Reactors Provide Preparative and Mechanistic Insights into the Synthesis of Formamidinium Lead Halide Perovskite Nanocrystals
journal, September 2017

Precise Control of Quantum Confinement in Cesium Lead Halide Perovskite Quantum Dots via Thermodynamic Equilibrium
journal, May 2018

Genesis, challenges and opportunities for colloidal lead halide perovskite nanocrystals
journal, February 2018

Enhanced mobility CsPbI ₃ quantum dot arrays for record-efficiency, high-voltage photovoltaic cells
journal, October 2017

Highly stable cesium lead iodide perovskite quantum dot light-emitting diodes
journal, October 2017

Exploration of Near-Infrared-Emissive Colloidal Multinary Lead Halide Perovskite Nanocrystals Using an Automated Microfluidic Platform
journal, May 2018

Dynamic Evolution of 2D Layers within Perovskite Nanocrystals via Salt Pair Extraction and Reinsertion
journal, December 2017

A Novel Organometallic Synthesis of Highly Luminescent CdTe Nanocrystals
journal, March 2001

Measurement and assignment of the size-dependent optical spectrum in CdSe quantum dots
journal, June 1996

Size-Dependent Spectroscopy of InP Quantum Dots
journal, June 1997

Colloidal Atomic Layer Deposition (c-ALD) using Self-Limiting Reactions at Nanocrystal Surface Coupled to Phase Transfer between Polar and Nonpolar Media
journal, November 2012

High-temperature structural evolution of caesium and rubidium triiodoplumbates
journal, October 2008

The Renaissance of Halide Perovskites and Their Evolution as Emerging Semiconductors
journal, September 2015

Cubic Perovskite Structure of Black Formamidinium Lead Iodide, α-[HC(NH ₂ ) ₂ ]PbI ₃ , at 298 K
journal, July 2015

Reentrant Structural and Optical Properties and Large Positive Thermal Expansion in Perovskite Formamidinium Lead Iodide
journal, November 2016

Phase Behavior and Polymorphism of Formamidinium Lead Iodide
journal, May 2018

Highly Dynamic Ligand Binding and Light Absorption Coefficient of Cesium Lead Bromide Perovskite Nanocrystals
journal, January 2016

Computed and Experimental Absorption Spectra of the Perovskite CH ₃ NH ₃ PbI ₃
journal, August 2014

Valence and Conduction Band Densities of States of Metal Halide Perovskites: A Combined Experimental–Theoretical Study
journal, June 2016

Band Edge Energies and Excitonic Transition Probabilities of Colloidal CsPbX ₃ (X = Cl, Br, I) Perovskite Nanocrystals
journal, September 2016

Cation-Induced Band-Gap Tuning in Organohalide Perovskites: Interplay of Spin–Orbit Coupling and Octahedra Tilting
journal, May 2014