Tracking Transformative Transitions: From CsPbBr3 Nanocrystals to Bulk Perovskite Films

Scheidt, Rebecca A.; Atwell, Corey; Kamat, Prashant V.

doi:10.1021/acsmaterialslett.9b00001

Title: Tracking Transformative Transitions: From CsPbBr₃ Nanocrystals to Bulk Perovskite Films

Abstract

The control of grain size and surface properties is an important parameter in controlling the optoelectronic and photovoltaic properties of metal halide perovskites. When CsPbBr₃ nanocrystal (~10 nm in diameter) films were annealed at 100–125 °C, they grow in size to produce ~400 nm diameter crystallites while transforming into bulk perovskite films. Characteristic changes in the optical properties were noted when such transformation occurred from nanocrystals into bulk. By tracking absorbance and emission spectra and morphological changes of CsPbBr₃ films at different annealing times and temperature, we were able to establish the mechanism of particle growth. The presence of nanocrystals and larger crystals during the intermediate annealing steps and narrowing size distribution confirmed the Ostwald ripening mechanism for the crystal growth. The energy of activation of crystal growth as determined from the temperature dependent optical properties was estimated to be 75 kcal/mol.

Authors:

Scheidt, Rebecca A. ^[1]; Atwell, Corey ^[1];

^[1]

Univ. of Notre Dame, IN (United States)

Publication Date:: Tue Mar 12 00:00:00 EDT 2019

Research Org.:: Univ. of Notre Dame, IN (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1657797

Grant/Contract Number:: SC0014334

Resource Type:: Accepted Manuscript

Journal Name:: ACS Materials Letters

Additional Journal Information:: Journal Volume: 1; Journal Issue: 1; Journal ID: ISSN 2639-4979

Publisher:: ACS Publications

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Scheidt, Rebecca A., Atwell, Corey, and Kamat, Prashant V. Tracking Transformative Transitions: From CsPbBr3 Nanocrystals to Bulk Perovskite Films.  United States: N. p., 2019. 
Web.  doi:10.1021/acsmaterialslett.9b00001.

Copy to clipboard


                    Scheidt, Rebecca A., Atwell, Corey, & Kamat, Prashant V. Tracking Transformative Transitions: From CsPbBr3 Nanocrystals to Bulk Perovskite Films.  United States.  https://doi.org/10.1021/acsmaterialslett.9b00001

Copy to clipboard


                    Scheidt, Rebecca A., Atwell, Corey, and Kamat, Prashant V. Tue .  
"Tracking Transformative Transitions: From CsPbBr3 Nanocrystals to Bulk Perovskite Films".  United States.  https://doi.org/10.1021/acsmaterialslett.9b00001.  https://www.osti.gov/servlets/purl/1657797.

Copy to clipboard


                    
@article{osti_1657797,

  title        = {Tracking Transformative Transitions: From CsPbBr3 Nanocrystals to Bulk Perovskite Films},

  author       = {Scheidt, Rebecca A. and Atwell, Corey and Kamat, Prashant V.},

  abstractNote = {The control of grain size and surface properties is an important parameter in controlling the optoelectronic and photovoltaic properties of metal halide perovskites. When CsPbBr3 nanocrystal (~10 nm in diameter) films were annealed at 100–125 °C, they grow in size to produce ~400 nm diameter crystallites while transforming into bulk perovskite films. Characteristic changes in the optical properties were noted when such transformation occurred from nanocrystals into bulk. By tracking absorbance and emission spectra and morphological changes of CsPbBr3 films at different annealing times and temperature, we were able to establish the mechanism of particle growth. The presence of nanocrystals and larger crystals during the intermediate annealing steps and narrowing size distribution confirmed the Ostwald ripening mechanism for the crystal growth. The energy of activation of crystal growth as determined from the temperature dependent optical properties was estimated to be 75 kcal/mol.},

  doi          = {10.1021/acsmaterialslett.9b00001},

  journal      = {ACS Materials Letters},

  number       = 1,

  volume       = 1,

  place        = {United States},

  year         = {Tue Mar 12 00:00:00 EDT 2019},

  month        = {Tue Mar 12 00:00:00 EDT 2019}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1021/acsmaterialslett.9b00001

Other availability

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Perovskite Solar Cells: The Birth of a New Era in Photovoltaics
journal, March 2017

Green, Martin A.; Ho-Baillie, Anita
ACS Energy Letters, Vol. 2, Issue 4
DOI: 10.1021/acsenergylett.7b00137

Highly Efficient and Stable Flexible Perovskite Solar Cells with Metal Oxides Nanoparticle Charge Extraction Layers
journal, February 2018

Najafi, Mehrdad; Di Giacomo, Francesco; Zhang, Dong
Small, Vol. 14, Issue 12
DOI: 10.1002/smll.201702775

High-Performance Flexible Perovskite Solar Cells on Ultrathin Glass: Implications of the TCO
journal, September 2017

Dou, Benjia; Miller, Elisa M.; Christians, Jeffrey A.
The Journal of Physical Chemistry Letters, Vol. 8, Issue 19
DOI: 10.1021/acs.jpclett.7b02128

Highly Bendable Flexible Perovskite Solar Cells on a Nanoscale Surface Oxide Layer of Titanium Metal Plates
journal, January 2018

Han, Gill Sang; Lee, Seongha; Duff, Matthew Lawrence
ACS Applied Materials & Interfaces, Vol. 10, Issue 5
DOI: 10.1021/acsami.7b16499

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

Protesescu, Loredana; Yakunin, Sergii; Bodnarchuk, Maryna I.
Nano Letters, Vol. 15, Issue 6
DOI: 10.1021/nl5048779

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

Nedelcu, Georgian; Protesescu, Loredana; Yakunin, Sergii
Nano Letters, Vol. 15, Issue 8
DOI: 10.1021/acs.nanolett.5b02404

Chemical Management for Colorful, Efficient, and Stable Inorganic–Organic Hybrid Nanostructured Solar Cells
journal, March 2013

Noh, Jun Hong; Im, Sang Hyuk; Heo, Jin Hyuck
Nano Letters, Vol. 13, Issue 4, p. 1764-1769
DOI: 10.1021/nl400349b

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

Akkerman, Quinten A.; D’Innocenzo, Valerio; Accornero, Sara
Journal of the American Chemical Society, Vol. 137, Issue 32
DOI: 10.1021/jacs.5b05602

Long-Range Balanced Electron- and Hole-Transport Lengths in Organic-Inorganic CH₃NH₃PbI₃
journal, October 2013

Xing, G.; Mathews, N.; Sun, S.
Science, Vol. 342, Issue 6156, p. 344-347
DOI: 10.1126/science.1243167

Electron-Hole Diffusion Lengths Exceeding 1 Micrometer in an Organometal Trihalide Perovskite Absorber
journal, October 2013

Stranks, S. D.; Eperon, G. E.; Grancini, G.
Science, Vol. 342, Issue 6156, p. 341-344
DOI: 10.1126/science.1243982

Carrier Diffusion Lengths in Hybrid Perovskites: Processing, Composition, Aging, and Surface Passivation Effects
journal, July 2016

Adhyaksa, Gede W. P.; Veldhuizen, Leon W.; Kuang, Yinghuan
Chemistry of Materials, Vol. 28, Issue 15
DOI: 10.1021/acs.chemmater.6b00466

Charge-Carrier Mobilities in Metal Halide Perovskites: Fundamental Mechanisms and Limits
journal, June 2017

Herz, Laura M.
ACS Energy Letters, Vol. 2, Issue 7
DOI: 10.1021/acsenergylett.7b00276

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

Yang, Woon Seok; Park, Byung-Wook; Jung, Eui Hyuk
Science, Vol. 356, Issue 6345
DOI: 10.1126/science.aan2301

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

Sanehira, Erin M.; Marshall, Ashley R.; Christians, Jeffrey A.
Science Advances, Vol. 3, Issue 10
DOI: 10.1126/sciadv.aao4204

High-efficiency perovskite–polymer bulk heterostructure light-emitting diodes
journal, November 2018

Zhao, Baodan; Bai, Sai; Kim, Vincent
Nature Photonics, Vol. 12, Issue 12
DOI: 10.1038/s41566-018-0283-4

Overcoming the electroluminescence efficiency limitations of perovskite light-emitting diodes
journal, December 2015

Cho, H.; Jeong, S. -H.; Park, M. -H.
Science, Vol. 350, Issue 6265
DOI: 10.1126/science.aad1818

High-Efficiency Solution-Processed Inorganic Metal Halide Perovskite Light-Emitting Diodes
journal, June 2017

Cho, Himchan; Wolf, Christoph; Kim, Joo Sung
Advanced Materials, Vol. 29, Issue 31
DOI: 10.1002/adma.201700579

High-Efficiency Polycrystalline Perovskite Light-Emitting Diodes Based on Mixed Cations
journal, February 2018

Cho, Himchan; Kim, Joo Sung; Wolf, Christoph
ACS Nano, Vol. 12, Issue 3
DOI: 10.1021/acsnano.8b00409

Organic–Inorganic Hybrid Passivation Enables Perovskite QLEDs with an EQE of 16.48%
journal, August 2018

Song, Jizhong; Fang, Tao; Li, Jianhai
Advanced Materials, Vol. 30, Issue 50
DOI: 10.1002/adma.201805409

Transformation of Sintered CsPbBr ₃ Nanocrystals to Cubic CsPbI ₃ and Gradient CsPbBr _x I _{3– x} through Halide Exchange
journal, June 2016

Hoffman, Jacob B.; Schleper, A. Lennart; Kamat, Prashant V.
Journal of the American Chemical Society, Vol. 138, Issue 27
DOI: 10.1021/jacs.6b04661

Synthesis and thermal annealing treatment of octylphosphonic acid-capped CdSe-tetrapod nanocrystals for bulk hetero-junction solar cell applications
journal, February 2015

Truong, Nguyen Tam Nguyen; Trinh, Kieu Thanh; Pham, Viet Thanh Hau
Korean Journal of Chemical Engineering, Vol. 32, Issue 4
DOI: 10.1007/s11814-014-0300-3

Annealing effects on the solution processed CdTe nanocrystals solar cells
journal, June 2014

Gao, Yuping; Zhu, Jiaoyan; Tian, Yiyao
Physica E: Low-dimensional Systems and Nanostructures, Vol. 60
DOI: 10.1016/j.physe.2014.01.027

Layer-by-Layer Assembly of Sintered CdSe _x Te _{1– x} Nanocrystal Solar Cells
journal, June 2012

MacDonald, Brandon I.; Martucci, Alessandro; Rubanov, Sergey
ACS Nano, Vol. 6, Issue 7
DOI: 10.1021/nn3009189

CsPbBr ₃ Solar Cells: Controlled Film Growth through Layer-by-Layer Quantum Dot Deposition
journal, November 2017

Hoffman, Jacob B.; Zaiats, Gary; Wappes, Isaac
Chemistry of Materials, Vol. 29, Issue 22
DOI: 10.1021/acs.chemmater.7b03751

Impact of Crystallographic Orientation Disorders on Electronic Heterogeneities in Metal Halide Perovskite Thin Films
journal, September 2018

Foley, Benjamin J.; Cuthriell, Shelby; Yazdi, Sina
Nano Letters, Vol. 18, Issue 10
DOI: 10.1021/acs.nanolett.8b02417

Structural Phase- and Degradation-Dependent Thermal Conductivity of CH ₃ NH ₃ PbI ₃ Perovskite Thin Films
journal, March 2016

Guo, Zhi; Yoon, Seog Joon; Manser, Joseph S.
The Journal of Physical Chemistry C, Vol. 120, Issue 12
DOI: 10.1021/acs.jpcc.6b00513

Evolution of Organic–Inorganic Lead Halide Perovskite from Solid-State Iodoplumbate Complexes
journal, July 2015

Manser, Joseph S.; Reid, Barry; Kamat, Prashant V.
The Journal of Physical Chemistry C, Vol. 119, Issue 30
DOI: 10.1021/acs.jpcc.5b05898

Parameters Affecting I – V Hysteresis of CH ₃ NH ₃ PbI ₃ Perovskite Solar Cells: Effects of Perovskite Crystal Size and Mesoporous TiO ₂ Layer
journal, August 2014

Kim, Hui-Seon; Park, Nam-Gyu
The Journal of Physical Chemistry Letters, Vol. 5, Issue 17
DOI: 10.1021/jz501392m

Scherrer after sixty years: A survey and some new results in the determination of crystallite size
journal, April 1978

Langford, J. I.; Wilson, A. J. C.
Journal of Applied Crystallography, Vol. 11, Issue 2
DOI: 10.1107/S0021889878012844

Dot–Wire–Platelet–Cube: Step Growth and Structural Transformations in CsPbBr ₃ Perovskite Nanocrystals
journal, July 2018

Peng, Lucheng; Dutta, Anirban; Xie, Renguo
ACS Energy Letters, Vol. 3, Issue 8
DOI: 10.1021/acsenergylett.8b01037

Trap-Limited Dynamics of Excited Carriers and Interpretation of the Photoluminescence Decay Kinetics in Metal Halide Perovskites
journal, August 2018

Chirvony, Vladimir S.; Martínez-Pastor, Juan P.
The Journal of Physical Chemistry Letters, Vol. 9, Issue 17
DOI: 10.1021/acs.jpclett.8b01241

Discerning the Surface and Bulk Recombination Kinetics of Organic-Inorganic Halide Perovskite Single Crystals
journal, May 2016

Wu, Bo; Nguyen, Huy Tiep; Ku, Zhiliang
Advanced Energy Materials, Vol. 6, Issue 14
DOI: 10.1002/aenm.201600551

Top and bottom surfaces limit carrier lifetime in lead iodide perovskite films
journal, January 2017

Yang, Ye; Yang, Mengjin; Moore, David T.
Nature Energy, Vol. 2, Issue 2
DOI: 10.1038/nenergy.2016.207

Beyond Bulk Lifetimes: Insights into Lead Halide Perovskite Films from Time-Resolved Photoluminescence
journal, October 2016

Staub, Florian; Hempel, Hannes; Hebig, Jan-Christoph
Physical Review Applied, Vol. 6, Issue 4
DOI: 10.1103/PhysRevApplied.6.044017

Solution Synthesis Approach to Colloidal Cesium Lead Halide Perovskite Nanoplatelets with Monolayer-Level Thickness Control
journal, January 2016

Akkerman, Quinten A.; Motti, Silvia Genaro; Srimath Kandada, Ajay Ram
Journal of the American Chemical Society, Vol. 138, Issue 3
DOI: 10.1021/jacs.5b12124

Existence of a Size-Dependent Stokes Shift in CsPbBr ₃ Perovskite Nanocrystals
journal, June 2017

Brennan, Michael C.; Zinna, Jessica; Kuno, Masaru
ACS Energy Letters, Vol. 2, Issue 7
DOI: 10.1021/acsenergylett.7b00383

Origin of the Size-Dependent Stokes Shift in CsPbBr ₃ Perovskite Nanocrystals
journal, August 2017

Brennan, Michael C.; Herr, John E.; Nguyen-Beck, Triet S.
Journal of the American Chemical Society, Vol. 139, Issue 35
DOI: 10.1021/jacs.7b05683

Impact of grain boundaries on efficiency and stability of organic-inorganic trihalide perovskites
journal, December 2017

Chu, Zhaodong; Yang, Mengjin; Schulz, Philip
Nature Communications, Vol. 8, Issue 1
DOI: 10.1038/s41467-017-02331-4

Unravelling the Effects of Grain Boundary and Chemical Doping on Electron–Hole Recombination in CH ₃ NH ₃ PbI ₃ Perovskite by Time-Domain Atomistic Simulation
journal, March 2016

Long, Run; Liu, Jin; Prezhdo, Oleg V.
Journal of the American Chemical Society, Vol. 138, Issue 11
DOI: 10.1021/jacs.6b00645

Interfacial Charge Transfer between Excited CsPbBr ₃ Nanocrystals and TiO ₂ : Charge Injection versus Photodegradation
journal, September 2018

Scheidt, Rebecca A.; Kerns, Elisabeth; Kamat, Prashant V.
The Journal of Physical Chemistry Letters, Vol. 9, Issue 20
DOI: 10.1021/acs.jpclett.8b02690

Modulation of Charge Recombination in CsPbBr ₃ Perovskite Films with Electrochemical Bias
journal, November 2017

Scheidt, Rebecca A.; Samu, Gergely F.; Janáky, Csaba
Journal of the American Chemical Society, Vol. 140, Issue 1
DOI: 10.1021/jacs.7b10958

Works referencing / citing this record:

Temperature-driven anion migration in gradient halide perovskites
journal, October 2019

Scheidt, Rebecca A.; Kamat, Prashant V.
The Journal of Chemical Physics, Vol. 151, Issue 13
DOI: 10.1063/1.5120270

Similar Records in DOE PAGES and OSTI.GOV collections:

Bidentate Ligand-Induced Oriented Transformation of CsPbBr₃ Perovskite Nanocrystals into Nanowires for X-ray Photodetectors

Journal Article Zhao, Chunyu ; He, Zaozhen ; Wangyang, Peihua ; ... - ACS Applied Nano Materials

We report shape and dimensionality control by ligands is an efficient way to fabricate high-quality perovskite nanocrystals (NCs) with optoelectronic properties. Herein, to realize oriented transformations between different morphologies of CsPbBr₃nanocrystals, we conceived of the use of defects and bidentate ligands to synergistically drive the reorientation of CsPbBr3nanocrystals into CsPbBr₃nanowires (NWs). By employing aminocaproic acid as the bidentate ligand, CsPbBr₃NWs were reconstructed from the CsPbBr₃NCs (~7 nm) with 20-60 nm in width and several micrometers in length, as well as a 527 nm photoluminescence (PL) peak, 59% PL quantum yield, and 98.5 ns PL lifetime. The bidentate ligand-directed anisotropic shapemore »« less
https://doi.org/10.1021/acsanm.2c00642

Full Text Available
Significantly Enhanced Emission Stability of CsPbBr₃ Nanocrystals via Chemically Induced Fusion Growth for Optoelectronic Devices

Journal Article Morrell, Maria V. ; He, Xiaoqing ; Luo, Guangfu ; ... - ACS Applied Nano Materials

Lead–halide perovskite nanocrystals (PNCs) have attracted much attention in recent years due to their outstanding optical properties. We report here a new chemical route for triggering postsynthetic growth of CsPbBr₃ PNCs at room temperature via intentional depletion of stabilizing ligands, resulting in an immediate fusion growth of the as-synthesized PNCs. Upon fusion, the CsPbBr₃ PNCs can grow from ca. 8 nm to ca. 60 nm in lateral dimensions in 48 h, reaching about 14 nm in thickness. More importantly, it was found that the fused PNCs have significantly enhanced optical properties. They showed an exceptionally higher stability to photodegradation. Theymore »« less
Cited by 36
https://doi.org/10.1021/acsanm.8b01298

Full Text Available
CsPbBr{sub 3} nanocrystal saturable absorber for mode-locking ytterbium fiber laser

Journal Article Zhou, Yan ; Li, Yue ; Xu, Jianqiu ; ... - Applied Physics Letters

Cesium lead halide perovskite nanocrystals (CsPbX{sub 3}, X = Cl, Br, I) have been reported as efficient light-harvesting and light-emitting semiconductor materials, but their nonlinear optical properties have been seldom touched upon. In this paper, we prepare layered CsPbBr{sub 3} nanocrystal films and characterize their physical properties. Broadband linear absorption from ∼0.8 to over 2.2 μm and nonlinear optical absorption at the 1-μm wavelength region are measured. The CsPbBr{sub 3} saturable absorber (SA), manufactured by drop-casting of colloidal CsPbBr{sub 3} liquid solution on a gold mirror, shows modulation depth and saturation intensity of 13.1% and 10.7 MW/cm{sup 2}, respectively. With this SA, mode-locking operationmore »« less
https://doi.org/10.1063/1.4955037
Existence of a Size-Dependent Stokes Shift in CsPbBr ₃ Perovskite Nanocrystals

Journal Article Brennan, Michael C. ; Zinna, Jessica ; Kuno, Masaru - ACS Energy Letters

The existence of a size-dependent Stokes shift is observed in CsPbBr₃ perovskite nanocrystals for the first time. Stokes shifts range from ~100 to 30 meV for particles with edge lengths between ~4 and 12 nm, respectively.
Cited by 111
https://doi.org/10.1021/acsenergylett.7b00383
Transformation of Sintered CsPbBr ₃ Nanocrystals to Cubic CsPbI ₃ and Gradient CsPbBr _x I _{3– x} through Halide Exchange

Journal Article Hoffman, Jacob B. ; Schleper, A. Lennart ; Kamat, Prashant V. - Journal of the American Chemical Society

All-inorganic cesium lead halide (CsPbX₃, X = Br^–, I^–) perovskites could potentially provide comparable photovoltaic performance with enhanced stability compared to organic–inorganic lead halide species. However, small-bandgap cubic CsPbI3 has been difficult to study due to challenges forming CsPbI₃ in the cubic phase. Here, a low-temperature procedure to form cubic CsPbI₃ has been developed through a halide exchange reaction using films of sintered CsPbBr₃ nanocrystals. The reaction was found to be strongly dependent upon temperature, featuring an Arrhenius relationship. Additionally, film thickness played a significant role in determining internal film structure at intermediate reaction times. Thin films (50 nm) showedmore »« less
Cited by 295
https://doi.org/10.1021/jacs.6b04661

Similar Records

Title: Tracking Transformative Transitions: From CsPbBr3 Nanocrystals to Bulk Perovskite Films

Abstract

Citation Formats

Perovskite Solar Cells: The Birth of a New Era in Photovoltaics journal, March 2017

Highly Efficient and Stable Flexible Perovskite Solar Cells with Metal Oxides Nanoparticle Charge Extraction Layers journal, February 2018

High-Performance Flexible Perovskite Solar Cells on Ultrathin Glass: Implications of the TCO journal, September 2017

Highly Bendable Flexible Perovskite Solar Cells on a Nanoscale Surface Oxide Layer of Titanium Metal Plates 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

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

Chemical Management for Colorful, Efficient, and Stable Inorganic–Organic Hybrid Nanostructured Solar Cells journal, March 2013

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

Long-Range Balanced Electron- and Hole-Transport Lengths in Organic-Inorganic CH3NH3PbI3 journal, October 2013

Electron-Hole Diffusion Lengths Exceeding 1 Micrometer in an Organometal Trihalide Perovskite Absorber journal, October 2013

Carrier Diffusion Lengths in Hybrid Perovskites: Processing, Composition, Aging, and Surface Passivation Effects journal, July 2016

Charge-Carrier Mobilities in Metal Halide Perovskites: Fundamental Mechanisms and Limits journal, June 2017

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

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

High-efficiency perovskite–polymer bulk heterostructure light-emitting diodes journal, November 2018

Overcoming the electroluminescence efficiency limitations of perovskite light-emitting diodes journal, December 2015

High-Efficiency Solution-Processed Inorganic Metal Halide Perovskite Light-Emitting Diodes journal, June 2017

High-Efficiency Polycrystalline Perovskite Light-Emitting Diodes Based on Mixed Cations journal, February 2018

Organic–Inorganic Hybrid Passivation Enables Perovskite QLEDs with an EQE of 16.48% journal, August 2018

Transformation of Sintered CsPbBr 3 Nanocrystals to Cubic CsPbI 3 and Gradient CsPbBr x I 3– x through Halide Exchange journal, June 2016

Synthesis and thermal annealing treatment of octylphosphonic acid-capped CdSe-tetrapod nanocrystals for bulk hetero-junction solar cell applications journal, February 2015

Annealing effects on the solution processed CdTe nanocrystals solar cells journal, June 2014

Layer-by-Layer Assembly of Sintered CdSe x Te 1– x Nanocrystal Solar Cells journal, June 2012

CsPbBr 3 Solar Cells: Controlled Film Growth through Layer-by-Layer Quantum Dot Deposition journal, November 2017

Impact of Crystallographic Orientation Disorders on Electronic Heterogeneities in Metal Halide Perovskite Thin Films journal, September 2018

Structural Phase- and Degradation-Dependent Thermal Conductivity of CH 3 NH 3 PbI 3 Perovskite Thin Films journal, March 2016

Evolution of Organic–Inorganic Lead Halide Perovskite from Solid-State Iodoplumbate Complexes journal, July 2015

Parameters Affecting I – V Hysteresis of CH 3 NH 3 PbI 3 Perovskite Solar Cells: Effects of Perovskite Crystal Size and Mesoporous TiO 2 Layer journal, August 2014

Scherrer after sixty years: A survey and some new results in the determination of crystallite size journal, April 1978

Dot–Wire–Platelet–Cube: Step Growth and Structural Transformations in CsPbBr 3 Perovskite Nanocrystals journal, July 2018

Trap-Limited Dynamics of Excited Carriers and Interpretation of the Photoluminescence Decay Kinetics in Metal Halide Perovskites journal, August 2018

Discerning the Surface and Bulk Recombination Kinetics of Organic-Inorganic Halide Perovskite Single Crystals journal, May 2016

Top and bottom surfaces limit carrier lifetime in lead iodide perovskite films journal, January 2017

Beyond Bulk Lifetimes: Insights into Lead Halide Perovskite Films from Time-Resolved Photoluminescence journal, October 2016

Solution Synthesis Approach to Colloidal Cesium Lead Halide Perovskite Nanoplatelets with Monolayer-Level Thickness Control journal, January 2016

Existence of a Size-Dependent Stokes Shift in CsPbBr 3 Perovskite Nanocrystals journal, June 2017

Origin of the Size-Dependent Stokes Shift in CsPbBr 3 Perovskite Nanocrystals journal, August 2017

Impact of grain boundaries on efficiency and stability of organic-inorganic trihalide perovskites journal, December 2017

Unravelling the Effects of Grain Boundary and Chemical Doping on Electron–Hole Recombination in CH 3 NH 3 PbI 3 Perovskite by Time-Domain Atomistic Simulation journal, March 2016

Interfacial Charge Transfer between Excited CsPbBr 3 Nanocrystals and TiO 2 : Charge Injection versus Photodegradation journal, September 2018

Modulation of Charge Recombination in CsPbBr 3 Perovskite Films with Electrochemical Bias journal, November 2017

Temperature-driven anion migration in gradient halide perovskites journal, October 2019

Title: Tracking Transformative Transitions: From CsPbBr₃ Nanocrystals to Bulk Perovskite Films

Perovskite Solar Cells: The Birth of a New Era in Photovoltaics
journal, March 2017

Highly Efficient and Stable Flexible Perovskite Solar Cells with Metal Oxides Nanoparticle Charge Extraction Layers
journal, February 2018

High-Performance Flexible Perovskite Solar Cells on Ultrathin Glass: Implications of the TCO
journal, September 2017

Highly Bendable Flexible Perovskite Solar Cells on a Nanoscale Surface Oxide Layer of Titanium Metal Plates
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

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

Chemical Management for Colorful, Efficient, and Stable Inorganic–Organic Hybrid Nanostructured Solar Cells
journal, March 2013

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

Long-Range Balanced Electron- and Hole-Transport Lengths in Organic-Inorganic CH₃NH₃PbI₃
journal, October 2013

Electron-Hole Diffusion Lengths Exceeding 1 Micrometer in an Organometal Trihalide Perovskite Absorber
journal, October 2013

Carrier Diffusion Lengths in Hybrid Perovskites: Processing, Composition, Aging, and Surface Passivation Effects
journal, July 2016

Charge-Carrier Mobilities in Metal Halide Perovskites: Fundamental Mechanisms and Limits
journal, June 2017

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

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

High-efficiency perovskite–polymer bulk heterostructure light-emitting diodes
journal, November 2018

Overcoming the electroluminescence efficiency limitations of perovskite light-emitting diodes
journal, December 2015

High-Efficiency Solution-Processed Inorganic Metal Halide Perovskite Light-Emitting Diodes
journal, June 2017

High-Efficiency Polycrystalline Perovskite Light-Emitting Diodes Based on Mixed Cations
journal, February 2018

Organic–Inorganic Hybrid Passivation Enables Perovskite QLEDs with an EQE of 16.48%
journal, August 2018

Transformation of Sintered CsPbBr ₃ Nanocrystals to Cubic CsPbI ₃ and Gradient CsPbBr _x I _{3– x} through Halide Exchange
journal, June 2016

Synthesis and thermal annealing treatment of octylphosphonic acid-capped CdSe-tetrapod nanocrystals for bulk hetero-junction solar cell applications
journal, February 2015

Annealing effects on the solution processed CdTe nanocrystals solar cells
journal, June 2014

Layer-by-Layer Assembly of Sintered CdSe _x Te _{1– x} Nanocrystal Solar Cells
journal, June 2012

CsPbBr ₃ Solar Cells: Controlled Film Growth through Layer-by-Layer Quantum Dot Deposition
journal, November 2017

Impact of Crystallographic Orientation Disorders on Electronic Heterogeneities in Metal Halide Perovskite Thin Films
journal, September 2018

Structural Phase- and Degradation-Dependent Thermal Conductivity of CH ₃ NH ₃ PbI ₃ Perovskite Thin Films
journal, March 2016

Evolution of Organic–Inorganic Lead Halide Perovskite from Solid-State Iodoplumbate Complexes
journal, July 2015

Parameters Affecting I – V Hysteresis of CH ₃ NH ₃ PbI ₃ Perovskite Solar Cells: Effects of Perovskite Crystal Size and Mesoporous TiO ₂ Layer
journal, August 2014

Scherrer after sixty years: A survey and some new results in the determination of crystallite size
journal, April 1978

Dot–Wire–Platelet–Cube: Step Growth and Structural Transformations in CsPbBr ₃ Perovskite Nanocrystals
journal, July 2018

Trap-Limited Dynamics of Excited Carriers and Interpretation of the Photoluminescence Decay Kinetics in Metal Halide Perovskites
journal, August 2018

Discerning the Surface and Bulk Recombination Kinetics of Organic-Inorganic Halide Perovskite Single Crystals
journal, May 2016

Top and bottom surfaces limit carrier lifetime in lead iodide perovskite films
journal, January 2017

Beyond Bulk Lifetimes: Insights into Lead Halide Perovskite Films from Time-Resolved Photoluminescence
journal, October 2016

Solution Synthesis Approach to Colloidal Cesium Lead Halide Perovskite Nanoplatelets with Monolayer-Level Thickness Control
journal, January 2016

Existence of a Size-Dependent Stokes Shift in CsPbBr ₃ Perovskite Nanocrystals
journal, June 2017

Origin of the Size-Dependent Stokes Shift in CsPbBr ₃ Perovskite Nanocrystals
journal, August 2017

Impact of grain boundaries on efficiency and stability of organic-inorganic trihalide perovskites
journal, December 2017

Unravelling the Effects of Grain Boundary and Chemical Doping on Electron–Hole Recombination in CH ₃ NH ₃ PbI ₃ Perovskite by Time-Domain Atomistic Simulation
journal, March 2016

Interfacial Charge Transfer between Excited CsPbBr ₃ Nanocrystals and TiO ₂ : Charge Injection versus Photodegradation
journal, September 2018

Modulation of Charge Recombination in CsPbBr ₃ Perovskite Films with Electrochemical Bias
journal, November 2017

Temperature-driven anion migration in gradient halide perovskites
journal, October 2019