Bright Luminescence from Nontoxic CsCu2X3 (X = Cl, Br I)

Roccanova, Rachel; Yangui, Aymen; Seo, Gijun; Creason, Tielyr D.; Wu, Yuntao; Kim, Do Young; Du, Mao-Hua; Saparov, Bayrammurad

doi:10.1021/acsmaterialslett.9b00274

Title: Bright Luminescence from Nontoxic CsCu₂X₃ (X = Cl, Br I)

Abstract

Inexpensive and highly efficient luminescent materials based on multinary halides have received increased attention in recent years. Among those considered most promising are the perovskites such as CsPbX₃ because of their highly efficient and tunable emission through precise control of chemical composition and nanostructuring. However, the presence of the toxic heavy metal Pb and relatively poor stability are among the major challenges for the introduction of lead-halide-based materials into the marketplace. In this paper, we report the optical properties of nontoxic and highly emissive one-dimensional (1D) all-inorganic halides CsCu₂X₃ (X = Cl, Br, I) and their mixed halide derivatives, which also show improved thermal and air stability. Photoluminescence (PL) measurements show tunable bright room temperature emission from green to yellow with photoluminescence quantum yields ranging from 0.37 (CsCu₂Cl_1.5Br_1.5) to 48.0% (CsCu₂Cl₃). Temperature- and power-dependent PL measurements suggest that the emission results from self-trapped excitons induced by strong charge localization and structural distortions within the lD ribbon structure.

Authors:

Roccanova, Rachel ^[1];

^[1]; Seo, Gijun ^[2]; Creason, Tielyr D. ^[1]; Wu, Yuntao ^[3];

^[2];

^[4];

^[1]

Univ. of Oklahoma, Norman, OK (United States). Dept. of Chemistry and Biochemistry
Oklahoma State Univ., Tulsa, OK (United States). School of Materials Science and Engineering
Chinese Academy of Sciences, Shanghai (China). Shanghai Inst. of Ceramics, Synthetic Crystal Research Center; Univ. of Tennessee, Knoxville, TN (United States). Scintillation Materials Research Center and Dept. of Materials Science and Engineering
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division

Publication Date:: Thu Sep 05 00:00:00 EDT 2019

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

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

OSTI Identifier:: 1569366

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: ACS Materials Letters

Additional Journal Information:: Journal Volume: 1; Journal Issue: 4; Journal ID: ISSN 2639-4979

Publisher:: ACS Publications

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Roccanova, Rachel, Yangui, Aymen, Seo, Gijun, Creason, Tielyr D., Wu, Yuntao, Kim, Do Young, Du, Mao-Hua, and Saparov, Bayrammurad. Bright Luminescence from Nontoxic CsCu2X3 (X = Cl, Br I).  United States: N. p., 2019. 
Web.  doi:10.1021/acsmaterialslett.9b00274.

Copy to clipboard


                    Roccanova, Rachel, Yangui, Aymen, Seo, Gijun, Creason, Tielyr D., Wu, Yuntao, Kim, Do Young, Du, Mao-Hua, & Saparov, Bayrammurad. Bright Luminescence from Nontoxic CsCu2X3 (X = Cl, Br I).  United States.  https://doi.org/10.1021/acsmaterialslett.9b00274

Copy to clipboard


                    Roccanova, Rachel, Yangui, Aymen, Seo, Gijun, Creason, Tielyr D., Wu, Yuntao, Kim, Do Young, Du, Mao-Hua, and Saparov, Bayrammurad. Thu .  
"Bright Luminescence from Nontoxic CsCu2X3 (X = Cl, Br I)".  United States.  https://doi.org/10.1021/acsmaterialslett.9b00274.  https://www.osti.gov/servlets/purl/1569366.

Copy to clipboard


                    
@article{osti_1569366,

  title        = {Bright Luminescence from Nontoxic CsCu2X3 (X = Cl, Br I)},

  author       = {Roccanova, Rachel and Yangui, Aymen and Seo, Gijun and Creason, Tielyr D. and Wu, Yuntao and Kim, Do Young and Du, Mao-Hua and Saparov, Bayrammurad},

  abstractNote = {Inexpensive and highly efficient luminescent materials based on multinary halides have received increased attention in recent years. Among those considered most promising are the perovskites such as CsPbX3 because of their highly efficient and tunable emission through precise control of chemical composition and nanostructuring. However, the presence of the toxic heavy metal Pb and relatively poor stability are among the major challenges for the introduction of lead-halide-based materials into the marketplace. In this paper, we report the optical properties of nontoxic and highly emissive one-dimensional (1D) all-inorganic halides CsCu2X3 (X = Cl, Br, I) and their mixed halide derivatives, which also show improved thermal and air stability. Photoluminescence (PL) measurements show tunable bright room temperature emission from green to yellow with photoluminescence quantum yields ranging from 0.37 (CsCu2Cl1.5Br1.5) to 48.0% (CsCu2Cl3). Temperature- and power-dependent PL measurements suggest that the emission results from self-trapped excitons induced by strong charge localization and structural distortions within the lD ribbon structure.},

  doi          = {10.1021/acsmaterialslett.9b00274},

  journal      = {ACS Materials Letters},

  number       = 4,

  volume       = 1,

  place        = {United States},

  year         = {Thu Sep 05 00:00:00 EDT 2019},

  month        = {Thu Sep 05 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.9b00274

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:

Highly Efficient Broadband Yellow Phosphor Based on Zero-Dimensional Tin Mixed-Halide Perovskite
journal, December 2017

Zhou, Chenkun; Tian, Yu; Yuan, Zhao
ACS Applied Materials & Interfaces, Vol. 9, Issue 51
DOI: 10.1021/acsami.7b12862

Metal halide perovskite light emitters
journal, September 2016

Kim, Young-Hoon; Cho, Himchan; Lee, Tae-Woo
Proceedings of the National Academy of Sciences, Vol. 113, Issue 42
DOI: 10.1073/pnas.1607471113

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

Tan, Zhi-Kuang; Moghaddam, Reza Saberi; Lai, May Ling
Nature Nanotechnology, Vol. 9, Issue 9
DOI: 10.1038/nnano.2014.149

Evidence and detailed study of a second-order phase transition in the (C ₆ H ₁₁ NH ₃ ) ₂ [PbI ₄ ] organic-inorganic hybrid material
journal, March 2015

Yangui, A.; Pillet, S.; Garrot, D.
Journal of Applied Physics, Vol. 117, Issue 11
DOI: 10.1063/1.4915509

Perovskite Crystals for Tunable White Light Emission
journal, November 2015

Pathak, Sandeep; Sakai, Nobuya; Wisnivesky Rocca Rivarola, Florencia
Chemistry of Materials, Vol. 27, Issue 23
DOI: 10.1021/acs.chemmater.5b03769

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

Room-Temperature Engineering of All-Inorganic Perovskite Nanocrsytals with Different Dimensionalities
journal, October 2017

Yang, Haoze; Zhang, Yuhai; Pan, Jun
Chemistry of Materials, Vol. 29, Issue 21
DOI: 10.1021/acs.chemmater.7b04161

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

Saparov, Bayrammurad; Mitzi, David B.
Chemical Reviews, Vol. 116, Issue 7
DOI: 10.1021/acs.chemrev.5b00715

From 0D Cs ₃ Bi ₂ I ₉ to 2D Cs ₃ Bi ₂ I ₆ Cl ₃ : Dimensional Expansion Induces a Direct Band Gap but Enhances Electron–Phonon Coupling
journal, March 2019

McCall, Kyle M.; Stoumpos, Constantinos C.; Kontsevoi, Oleg Y.
Chemistry of Materials, Vol. 31, Issue 7
DOI: 10.1021/acs.chemmater.9b00636

Pure Cs ₄ PbBr ₆ : Highly Luminescent Zero-Dimensional Perovskite Solids
journal, September 2016

Saidaminov, Makhsud I.; Almutlaq, Jawaher; Sarmah, Smritakshi
ACS Energy Letters, Vol. 1, Issue 4
DOI: 10.1021/acsenergylett.6b00396

Synthesis, Characterization, and Morphological Control of Cs ₂ CuCl ₄ Nanocrystals
journal, June 2019

Booker, Edward P.; Griffiths, James T.; Eyre, Lissa
The Journal of Physical Chemistry C, Vol. 123, Issue 27
DOI: 10.1021/acs.jpcc.9b04037

Near-Unity Photoluminescence Quantum Yield in Blue-Emitting Cs ₃ Cu ₂ Br _{5– x} I _x (0 ≤ x ≤ 5)
journal, February 2019

Roccanova, Rachel; Yangui, Aymen; Nhalil, Hariharan
ACS Applied Electronic Materials, Vol. 1, Issue 3
DOI: 10.1021/acsaelm.9b00015

Synproportionierung am metallischen Substrat: CsCu2Cl3 und CsCu2Br3
journal, August 1984

Meyer, Gerd
Zeitschrift f�r anorganische und allgemeine Chemie, Vol. 515, Issue 8
DOI: 10.1002/zaac.19845150814

Hybrid Perovskite Light-Emitting Diodes Based on Perovskite Nanocrystals with Organic-Inorganic Mixed Cations
journal, March 2017

Zhang, Xiaoli; Liu, He; Wang, Weigao
Advanced Materials, Vol. 29, Issue 18
DOI: 10.1002/adma.201606405

Mechanism of Tin Oxidation and Stabilization by Lead Substitution in Tin Halide Perovskites
journal, August 2017

Leijtens, Tomas; Prasanna, Rohit; Gold-Parker, Aryeh
ACS Energy Letters, Vol. 2, Issue 9
DOI: 10.1021/acsenergylett.7b00636

Phase diagram for the CuBr–CsBr system
journal, January 2000

Wojakowska, A.; Krzyżak, E.; Wojakowski, A.
Thermochimica Acta, Vol. 344, Issue 1-2
DOI: 10.1016/S0040-6031(99)00326-3

Phase Diagram of the System Copper(I) Iodide + Cesium Iodide ^†
journal, May 2003

Wojakowska, Alina; Górniak, Agata; Kuznetsov, Alexander Yu.
Journal of Chemical & Engineering Data, Vol. 48, Issue 3
DOI: 10.1021/je020188x

Optical Absorption in Band-Edge Region of ( C H ₃ N H ₃ ) ₃ B i ₂ I ₉ Single Crystals
journal, May 1996

Kawai, Taketoshi; Ishii, Atsuko; Kitamura, Takako
Journal of the Physical Society of Japan, Vol. 65, Issue 5
DOI: 10.1143/JPSJ.65.1464

Low-Dimensional Organometal Halide Perovskites
journal, November 2017

Lin, Haoran; Zhou, Chenkun; Tian, Yu
ACS Energy Letters, Vol. 3, Issue 1
DOI: 10.1021/acsenergylett.7b00926

Air‐Stable, Lead‐Free Zero‐Dimensional Mixed Bismuth‐Antimony Perovskite Single Crystals with Ultra‐broadband Emission
journal, February 2019

Zhang, Ruiling; Mao, Xin; Yang, Yang
Angewandte Chemie, Vol. 131, Issue 9
DOI: 10.1002/ange.201812865

White-Light Emission from Magic-Sized Cadmium Selenide Nanocrystals
journal, November 2005

Bowers, Michael J.; McBride, James R.; Rosenthal, Sandra J.
Journal of the American Chemical Society, Vol. 127, Issue 44
DOI: 10.1021/ja055470d

Optical Investigation of Broadband White-Light Emission in Self-Assembled Organic–Inorganic Perovskite (C ₆ H ₁₁ NH ₃ ) ₂ PbBr ₄
journal, October 2015

Yangui, A.; Garrot, D.; Lauret, J. S.
The Journal of Physical Chemistry C, Vol. 119, Issue 41
DOI: 10.1021/acs.jpcc.5b06211

White-Light Emission from Layered Halide Perovskites
journal, February 2018

Smith, Matthew D.; Karunadasa, Hemamala I.
Accounts of Chemical Research, Vol. 51, Issue 3
DOI: 10.1021/acs.accounts.7b00433

Anomalous Alloy Properties in Mixed Halide Perovskites
journal, October 2014

Yin, Wan-Jian; Yan, Yanfa; Wei, Su-Huai
The Journal of Physical Chemistry Letters, Vol. 5, Issue 21
DOI: 10.1021/jz501896w

Control of the white-light emission in the mixed two-dimensional hybrid perovskites (C 6 H 11 NH 3 ) 2 [PbBr 4−x I x ]
journal, March 2017

Yangui, Aymen; Pillet, Sebastien; Lusson, Alain
Journal of Alloys and Compounds, Vol. 699
DOI: 10.1016/j.jallcom.2017.01.032

Ultrafast Exciton Dynamics in Colloidal CsPbBr ₃ Perovskite Nanocrystals: Biexciton Effect and Auger Recombination
journal, February 2017

Aneesh, J.; Swarnkar, Abhishek; Kumar Ravi, Vikash
The Journal of Physical Chemistry C, Vol. 121, Issue 8
DOI: 10.1021/acs.jpcc.7b00762

The lifetime of electrons, holes and excitons before self-trapping
journal, September 1977

Mott, N. F.; Stoneham, A. M.
Journal of Physics C: Solid State Physics, Vol. 10, Issue 17
DOI: 10.1088/0022-3719/10/17/022

Temperature dependence of the energy gap in semiconductors
journal, January 1967

Varshni, Y. P.
Physica, Vol. 34, Issue 1
DOI: 10.1016/0031-8914(67)90062-6

Broadband Emission in a New Two-Dimensional Cd-Based Hybrid Perovskite
journal, January 2018

Yangui, Aymen; Pillet, Sebastien; Bendeif, El-Eulmi
ACS Photonics, Vol. 5, Issue 4
DOI: 10.1021/acsphotonics.8b00052

Temperature-dependent photoluminescence of inorganic perovskite nanocrystal films
journal, January 2016

Li, Jiaming; Yuan, Xi; Jing, Pengtao
RSC Advances, Vol. 6, Issue 82
DOI: 10.1039/C6RA17008K

Temperature-dependent photoluminescence of PbS quantum dots in glass: Evidence of exciton state splitting and carrier trapping
journal, September 2010

Gaponenko, Maxim S.; Lutich, Andrey A.; Tolstik, Nikolai A.
Physical Review B, Vol. 82, Issue 12
DOI: 10.1103/PhysRevB.82.125320

High Photoluminescence Quantum Yields in Organic Semiconductor-Perovskite Composite Thin Films
journal, September 2017

Longo, Giulia; La-Placa, Maria-Grazia; Sessolo, Michele
ChemSusChem, Vol. 10, Issue 19
DOI: 10.1002/cssc.201701265

Origin of the Enhanced Photoluminescence Quantum Yield in MAPbBr ₃ Perovskite with Reduced Crystal Size
journal, May 2018

Droseros, Nikolaos; Longo, Giulia; Brauer, Jan C.
ACS Energy Letters, Vol. 3, Issue 6
DOI: 10.1021/acsenergylett.8b00475

Negative Thermal Quenching Curves in Photoluminescence of Solids
journal, February 1998

Shibata, Hajime
Japanese Journal of Applied Physics, Vol. 37, Issue Part 1, No. 2
DOI: 10.1143/JJAP.37.550

Negative thermal quenching of photoluminescence in annealed ZnO–Al ₂ O ₃ core–shell nanorods
journal, January 2015

Wu, Yukun; Li, Junwen; Ding, Huaiyi
Physical Chemistry Chemical Physics, Vol. 17, Issue 7
DOI: 10.1039/C4CP04998E

Composite Perovskites of Cesium Lead Bromide for Optimized Photoluminescence
journal, July 2017

Ling, Yichuan; Tan, Lei; Wang, Xi
The Journal of Physical Chemistry Letters, Vol. 8, Issue 14
DOI: 10.1021/acs.jpclett.7b01302

Structural origins of broadband emission from layered Pb–Br hybrid perovskites
journal, January 2017

Smith, Matthew D.; Jaffe, Adam; Dohner, Emma R.
Chemical Science, Vol. 8, Issue 6
DOI: 10.1039/C7SC01590A

Strong Electron–Phonon Coupling and Self-Trapped Excitons in the Defect Halide Perovskites A ₃ M ₂ I ₉ (A = Cs, Rb; M = Bi, Sb)
journal, April 2017

McCall, Kyle M.; Stoumpos, Constantinos C.; Kostina, Svetlana S.
Chemistry of Materials, Vol. 29, Issue 9
DOI: 10.1021/acs.chemmater.7b01184

Electron–phonon coupling in hybrid lead halide perovskites
journal, May 2016

Wright, Adam D.; Verdi, Carla; Milot, Rebecca L.
Nature Communications, Vol. 7, Issue 1
DOI: 10.1038/ncomms11755

Works referencing / citing this record:

Rb ₂ CuX ₃ (X = Cl, Br): 1D All‐Inorganic Copper Halides with Ultrabright Blue Emission and Up‐Conversion Photoluminescence
journal, November 2019

Creason, Tielyr D.; Yangui, Aymen; Roccanova, Rachel
Advanced Optical Materials, Vol. 8, Issue 2
DOI: 10.1002/adom.201901338

Additive-assisted synthesis and optoelectronic properties of (CH ₃ NH ₃ ) ₄ Bi ₆ I ₂₂
journal, January 2020

Sharma, Manila; Yangui, Aymen; Lusson, Alain
Inorganic Chemistry Frontiers, Vol. 7, Issue 7
DOI: 10.1039/c9qi01574d

Similar Records in DOE PAGES and OSTI.GOV collections:

Rb₂CuX₃ (X = Cl, Br): 1D All-Inorganic Copper Halides with Ultrabright Blue Emission and Up-Conversion Photoluminescence

Journal Article Creason, Tielyr ; Yangui, Aymen ; Roccanova, Rachel ; ... - Advanced Optical Materials

All-inorganic metal halides such as Cs₄PbX₆ and CsPbX₃ (X = Cl, Br, and I) are attracting global attention owing to their promise in optoelectronic applications. However, the presence of the toxic heavy metal lead (Pb) in these materials is a major concern. In this work, a family of nontoxic high-efficiency blue-emitting all-inorganic halides Rb₂CuX₃ (X = Br and Cl) is reported; the compounds exhibit 1D crystal structures featuring anionicmore »« less
Cited by 73
https://doi.org/10.1002/adom.201901338

Full Text Available
K₂CuX₃ (X = Cl, Br): All-Inorganic Lead-Free Blue Emitters with Near-Unity Photoluminescence Quantum Yield

Journal Article Creason, Tielyr D. ; McWhorter, Timothy M. ; Bell, Zane ; ... - Chemistry of Materials

Recently, copper(I) halides have been gaining increased attention as highly luminescent nontoxic alternatives to lead halide perovskites for optoelectronic applications. In this paper, we report preparation of blue emitting, lead free, all-inorganic halides K₂CuX₃ (X = Cl, Br) through five synthetic methods including traditional solid-state and solution methods. The photoluminescence (PL) emission spectra of K₂CuCl₃ and K₂CuBr₃ exhibit narrow peaks centered at 392 and 388 nm with full widths at half-maximum (fwhm) values of ~54 nm. The visible bright blue emission is corroborated by the remarkably high photoluminescence quantum yield (PLQY) values up to ~97%. Furthermore, radioluminescence measurements on K₂CuCl₃more »« less
Cited by 60
https://doi.org/10.1021/acs.chemmater.0c02098

Full Text Available
Highly Stable Luminous “Snakes” from CsPbX₃ Perovskite Nanocrystals Anchored on Amine-Coated Silica Nanowires

Journal Article Pan, Aizhao ; Jurow, Matthew J. ; Wu, Youshen ; ... - ACS Applied Nano Materials

CsPbX₃ (X = Cl, Br, and I) perovskite nanocrystals (NCs) are known for their exceptional optoelectronic properties, yet the material's instability toward polar solvents, heat, or UV irradiation greatly limits its further applications. Herein, an efficient in situ growing strategy has been developed to give highly stable perovskite NC composites (abbreviated CsPbX₃@CA-SiO₂) by anchoring CsPbX₃ NCs onto silica nanowires (NWs), which effectively depresses the optical degradation of their photoluminescence (PL) and enhances stability. The preparation of surface-functionalized serpentine silica NWs is realized by a sol-gel process involving hydrolysis of a mixture of tetraethyl orthosilicate (TEOS), 3-aminopropyltriethoxysilane (APTES), and trimethoxy(octadecyl)silane (TMODS)more »« less
Cited by 9
https://doi.org/10.1021/acsanm.8b01889

Full Text Available
Composition-Dependent Photoluminescence Properties and Anti-Counterfeiting Applications of A₂AgX₃ (A = Rb, Cs; X = Cl, Br, I)

Journal Article Kumar, Pawan ; Creason, Tielyr ; Fattal, Hadiah ; ... - Advanced Functional Materials

Copper(I) halides are emerging as attractive alternatives to lead halide perovskites for optical and electronic applications. However, blue-emitting all-inorganic copper(I) halides suffer from poor stability and lack of tunability of their photoluminescence (PL) properties. In this work, the preparation of silver(I) halides A₂AgX₃ (A = Rb, Cs; X = Cl, Br, I) through solid-state synthesis is reported. In contrast to the Cu(I) analogs, A₂AgX₃ are broad-band emitters sensitive to A and X site substitutions. First-principle calculations show that defect-bound excitons are responsible for the observed main PL peaks in Rb₂AgX₃ and that self-trapped excitons (STEs) contribute to a minor PLmore »« less
https://doi.org/10.1002/adfm.202104941

Full Text Available
Near-Unity Photoluminescence Quantum Yield in Blue-Emitting Cs₃Cu₂Br_5–xI_x(0 ≤ x ≤ 5)

Journal Article Roccanova, Rachel ; Yangui, Aymen ; Nhalil, Hariharan ; ... - ACS Applied Electronic Materials

Recently, interest in developing efficient, low-cost, nontoxic, and stable metal halide emitters that can be incorporated into solid-state lighting technologies has taken hold. Here we report nontoxic, stable, and highly efficient blue-light-emitting Cs₃Cu₂Br_5–xI_x (0 ≤ x ≤ 5). Room-temperature photoluminescence measurements show bright blue emission in the 456 to 443 nm range with near-unity quantum yield for Cs₃Cu₂I₅. Here, density functional theory calculations and power-dependent PL measurements suggest that the emission results from self-trapped excitons induced by strong charge localization within the zero-dimensional cluster structure of Cs₃Cu₂Br_5–xI_x.
https://doi.org/10.1021/acsaelm.9b00015

Full Text Available

Similar Records

Title: Bright Luminescence from Nontoxic CsCu2X3 (X = Cl, Br I)

Abstract

Citation Formats

Highly Efficient Broadband Yellow Phosphor Based on Zero-Dimensional Tin Mixed-Halide Perovskite journal, December 2017

Metal halide perovskite light emitters journal, September 2016

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

Evidence and detailed study of a second-order phase transition in the (C 6 H 11 NH 3 ) 2 [PbI 4 ] organic-inorganic hybrid material journal, March 2015

Perovskite Crystals for Tunable White Light Emission journal, November 2015

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

Room-Temperature Engineering of All-Inorganic Perovskite Nanocrsytals with Different Dimensionalities journal, October 2017

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

From 0D Cs 3 Bi 2 I 9 to 2D Cs 3 Bi 2 I 6 Cl 3 : Dimensional Expansion Induces a Direct Band Gap but Enhances Electron–Phonon Coupling journal, March 2019

Pure Cs 4 PbBr 6 : Highly Luminescent Zero-Dimensional Perovskite Solids journal, September 2016

Synthesis, Characterization, and Morphological Control of Cs 2 CuCl 4 Nanocrystals journal, June 2019

Near-Unity Photoluminescence Quantum Yield in Blue-Emitting Cs 3 Cu 2 Br 5– x I x (0 ≤ x ≤ 5) journal, February 2019

Synproportionierung am metallischen Substrat: CsCu2Cl3 und CsCu2Br3 journal, August 1984

Hybrid Perovskite Light-Emitting Diodes Based on Perovskite Nanocrystals with Organic-Inorganic Mixed Cations journal, March 2017

Mechanism of Tin Oxidation and Stabilization by Lead Substitution in Tin Halide Perovskites journal, August 2017

Phase diagram for the CuBr–CsBr system journal, January 2000

Phase Diagram of the System Copper(I) Iodide + Cesium Iodide † journal, May 2003

Optical Absorption in Band-Edge Region of ( C H 3 N H 3 ) 3 B i 2 I 9 Single Crystals journal, May 1996

Low-Dimensional Organometal Halide Perovskites journal, November 2017

Air‐Stable, Lead‐Free Zero‐Dimensional Mixed Bismuth‐Antimony Perovskite Single Crystals with Ultra‐broadband Emission journal, February 2019

White-Light Emission from Magic-Sized Cadmium Selenide Nanocrystals journal, November 2005

Optical Investigation of Broadband White-Light Emission in Self-Assembled Organic–Inorganic Perovskite (C 6 H 11 NH 3 ) 2 PbBr 4 journal, October 2015

White-Light Emission from Layered Halide Perovskites journal, February 2018

Anomalous Alloy Properties in Mixed Halide Perovskites journal, October 2014

Control of the white-light emission in the mixed two-dimensional hybrid perovskites (C 6 H 11 NH 3 ) 2 [PbBr 4−x I x ] journal, March 2017

Ultrafast Exciton Dynamics in Colloidal CsPbBr 3 Perovskite Nanocrystals: Biexciton Effect and Auger Recombination journal, February 2017

The lifetime of electrons, holes and excitons before self-trapping journal, September 1977

Temperature dependence of the energy gap in semiconductors journal, January 1967

Broadband Emission in a New Two-Dimensional Cd-Based Hybrid Perovskite journal, January 2018

Temperature-dependent photoluminescence of inorganic perovskite nanocrystal films journal, January 2016

Temperature-dependent photoluminescence of PbS quantum dots in glass: Evidence of exciton state splitting and carrier trapping journal, September 2010

High Photoluminescence Quantum Yields in Organic Semiconductor-Perovskite Composite Thin Films journal, September 2017

Origin of the Enhanced Photoluminescence Quantum Yield in MAPbBr 3 Perovskite with Reduced Crystal Size journal, May 2018

Negative Thermal Quenching Curves in Photoluminescence of Solids journal, February 1998

Negative thermal quenching of photoluminescence in annealed ZnO–Al 2 O 3 core–shell nanorods journal, January 2015

Composite Perovskites of Cesium Lead Bromide for Optimized Photoluminescence journal, July 2017

Structural origins of broadband emission from layered Pb–Br hybrid perovskites journal, January 2017

Strong Electron–Phonon Coupling and Self-Trapped Excitons in the Defect Halide Perovskites A 3 M 2 I 9 (A = Cs, Rb; M = Bi, Sb) journal, April 2017

Electron–phonon coupling in hybrid lead halide perovskites journal, May 2016

Rb 2 CuX 3 (X = Cl, Br): 1D All‐Inorganic Copper Halides with Ultrabright Blue Emission and Up‐Conversion Photoluminescence journal, November 2019

Additive-assisted synthesis and optoelectronic properties of (CH 3 NH 3 ) 4 Bi 6 I 22 journal, January 2020

Title: Bright Luminescence from Nontoxic CsCu₂X₃ (X = Cl, Br I)

Highly Efficient Broadband Yellow Phosphor Based on Zero-Dimensional Tin Mixed-Halide Perovskite
journal, December 2017

Metal halide perovskite light emitters
journal, September 2016

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

Evidence and detailed study of a second-order phase transition in the (C ₆ H ₁₁ NH ₃ ) ₂ [PbI ₄ ] organic-inorganic hybrid material
journal, March 2015

Perovskite Crystals for Tunable White Light Emission
journal, November 2015

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

Room-Temperature Engineering of All-Inorganic Perovskite Nanocrsytals with Different Dimensionalities
journal, October 2017

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

From 0D Cs ₃ Bi ₂ I ₉ to 2D Cs ₃ Bi ₂ I ₆ Cl ₃ : Dimensional Expansion Induces a Direct Band Gap but Enhances Electron–Phonon Coupling
journal, March 2019

Pure Cs ₄ PbBr ₆ : Highly Luminescent Zero-Dimensional Perovskite Solids
journal, September 2016

Synthesis, Characterization, and Morphological Control of Cs ₂ CuCl ₄ Nanocrystals
journal, June 2019

Near-Unity Photoluminescence Quantum Yield in Blue-Emitting Cs ₃ Cu ₂ Br _{5– x} I _x (0 ≤ x ≤ 5)
journal, February 2019

Synproportionierung am metallischen Substrat: CsCu2Cl3 und CsCu2Br3
journal, August 1984

Hybrid Perovskite Light-Emitting Diodes Based on Perovskite Nanocrystals with Organic-Inorganic Mixed Cations
journal, March 2017

Mechanism of Tin Oxidation and Stabilization by Lead Substitution in Tin Halide Perovskites
journal, August 2017

Phase diagram for the CuBr–CsBr system
journal, January 2000

Phase Diagram of the System Copper(I) Iodide + Cesium Iodide ^†
journal, May 2003

Optical Absorption in Band-Edge Region of ( C H ₃ N H ₃ ) ₃ B i ₂ I ₉ Single Crystals
journal, May 1996

Low-Dimensional Organometal Halide Perovskites
journal, November 2017

Air‐Stable, Lead‐Free Zero‐Dimensional Mixed Bismuth‐Antimony Perovskite Single Crystals with Ultra‐broadband Emission
journal, February 2019

White-Light Emission from Magic-Sized Cadmium Selenide Nanocrystals
journal, November 2005

Optical Investigation of Broadband White-Light Emission in Self-Assembled Organic–Inorganic Perovskite (C ₆ H ₁₁ NH ₃ ) ₂ PbBr ₄
journal, October 2015

White-Light Emission from Layered Halide Perovskites
journal, February 2018

Anomalous Alloy Properties in Mixed Halide Perovskites
journal, October 2014

Control of the white-light emission in the mixed two-dimensional hybrid perovskites (C 6 H 11 NH 3 ) 2 [PbBr 4−x I x ]
journal, March 2017

Ultrafast Exciton Dynamics in Colloidal CsPbBr ₃ Perovskite Nanocrystals: Biexciton Effect and Auger Recombination
journal, February 2017

The lifetime of electrons, holes and excitons before self-trapping
journal, September 1977

Temperature dependence of the energy gap in semiconductors
journal, January 1967

Broadband Emission in a New Two-Dimensional Cd-Based Hybrid Perovskite
journal, January 2018

Temperature-dependent photoluminescence of inorganic perovskite nanocrystal films
journal, January 2016

Temperature-dependent photoluminescence of PbS quantum dots in glass: Evidence of exciton state splitting and carrier trapping
journal, September 2010

High Photoluminescence Quantum Yields in Organic Semiconductor-Perovskite Composite Thin Films
journal, September 2017

Origin of the Enhanced Photoluminescence Quantum Yield in MAPbBr ₃ Perovskite with Reduced Crystal Size
journal, May 2018

Negative Thermal Quenching Curves in Photoluminescence of Solids
journal, February 1998

Negative thermal quenching of photoluminescence in annealed ZnO–Al ₂ O ₃ core–shell nanorods
journal, January 2015

Composite Perovskites of Cesium Lead Bromide for Optimized Photoluminescence
journal, July 2017

Structural origins of broadband emission from layered Pb–Br hybrid perovskites
journal, January 2017

Strong Electron–Phonon Coupling and Self-Trapped Excitons in the Defect Halide Perovskites A ₃ M ₂ I ₉ (A = Cs, Rb; M = Bi, Sb)
journal, April 2017

Electron–phonon coupling in hybrid lead halide perovskites
journal, May 2016

Rb ₂ CuX ₃ (X = Cl, Br): 1D All‐Inorganic Copper Halides with Ultrabright Blue Emission and Up‐Conversion Photoluminescence
journal, November 2019

Additive-assisted synthesis and optoelectronic properties of (CH ₃ NH ₃ ) ₄ Bi ₆ I ₂₂
journal, January 2020