Composition-tuned MAPbBr3nanoparticles with addition of Cs+cations for improved photoluminescence

Sai S.H. Dintakurti; Parth Vashishtha; David Giovanni; Yanan Fang; Norton Foo; Zexiang Shen; Claude Guet; Tze Chien Sum; Tim White

doi:10.1039/d1ra03965b

Composition-tuned MAPbBr₃nanoparticles with addition of Cs⁺cations for improved photoluminescence

Sai S.H. Dintakurti^*, Parth Vashishtha, David Giovanni, Yanan Fang, Norton Foo, Zexiang Shen, Claude Guet, Tze Chien Sum, Tim White

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Hybrid organic-inorganic lead halide perovskite nanoparticles are promising candidates for optoelectronic applications. This investigation describes the structural and optical properties of MA_xCs_1−xPbBr₃mixed cation colloidal nanoparticles spanning the complete compositional range of Cs substitution. A monotonic progression in the cubic lattice parameter (a) with changes in the Cs⁺content confirmed the formation of mixed cation materials. More importantly, time-resolved photoluminescence (TRPL) revealed the optimized 13 mol% Cs nanoparticle composition exhibits the longest charge carrier lifetime and enhancement in radiative pathways. This sample also showed the highest photoluminescence quantum yield (PLQY) of ∼88% and displays ∼100% improvement in the PLQY of pure MAPbBr₃and CsPbBr₃. Prototype LEDs fabricated from MA_0.87Cs_0.13PbBr₃were demonstrated.

Original language	English
Pages (from-to)	24137-24143
Number of pages	7
Journal	RSC Advances
Volume	11
Issue number	39
DOIs	https://doi.org/10.1039/d1ra03965b
Publication status	Published - Jun 25 2021
Externally published	Yes

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry 2021.

ASJC Scopus Subject Areas

General Chemistry
General Chemical Engineering

Access to Document

10.1039/d1ra03965b

Cite this

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title = "Composition-tuned MAPbBr3nanoparticles with addition of Cs+cations for improved photoluminescence",

abstract = "Hybrid organic-inorganic lead halide perovskite nanoparticles are promising candidates for optoelectronic applications. This investigation describes the structural and optical properties of MAxCs1−xPbBr3mixed cation colloidal nanoparticles spanning the complete compositional range of Cs substitution. A monotonic progression in the cubic lattice parameter (a) with changes in the Cs+content confirmed the formation of mixed cation materials. More importantly, time-resolved photoluminescence (TRPL) revealed the optimized 13 mol% Cs nanoparticle composition exhibits the longest charge carrier lifetime and enhancement in radiative pathways. This sample also showed the highest photoluminescence quantum yield (PLQY) of ∼88% and displays ∼100% improvement in the PLQY of pure MAPbBr3and CsPbBr3. Prototype LEDs fabricated from MA0.87Cs0.13PbBr3were demonstrated.",

author = "Dintakurti, {Sai S.H.} and Parth Vashishtha and David Giovanni and Yanan Fang and Norton Foo and Zexiang Shen and Claude Guet and Sum, {Tze Chien} and Tim White",

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T1 - Composition-tuned MAPbBr3nanoparticles with addition of Cs+cations for improved photoluminescence

AU - Dintakurti, Sai S.H.

AU - Vashishtha, Parth

AU - Giovanni, David

AU - Fang, Yanan

AU - Foo, Norton

AU - Shen, Zexiang

AU - Guet, Claude

AU - Sum, Tze Chien

AU - White, Tim

PY - 2021/6/25

Y1 - 2021/6/25

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AB - Hybrid organic-inorganic lead halide perovskite nanoparticles are promising candidates for optoelectronic applications. This investigation describes the structural and optical properties of MAxCs1−xPbBr3mixed cation colloidal nanoparticles spanning the complete compositional range of Cs substitution. A monotonic progression in the cubic lattice parameter (a) with changes in the Cs+content confirmed the formation of mixed cation materials. More importantly, time-resolved photoluminescence (TRPL) revealed the optimized 13 mol% Cs nanoparticle composition exhibits the longest charge carrier lifetime and enhancement in radiative pathways. This sample also showed the highest photoluminescence quantum yield (PLQY) of ∼88% and displays ∼100% improvement in the PLQY of pure MAPbBr3and CsPbBr3. Prototype LEDs fabricated from MA0.87Cs0.13PbBr3were demonstrated.

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