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Title: Bright Luminescence from Nontoxic CsCu 2X 3 (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 CsPbX 3 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 CsCu 2X 3 (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 (CsCu 2Cl 1.5Br 1.5) to 48.0% (CsCu 2Cl 3). 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:
 [1]; ORCiD logo [1];  [2];  [1];  [3]; ORCiD logo [2]; ORCiD logo [4]; ORCiD logo [1]
  1. Univ. of Oklahoma, Norman, OK (United States). Dept. of Chemistry and Biochemistry
  2. Oklahoma State Univ., Tulsa, OK (United States). School of Materials Science and Engineering
  3. 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
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1569366
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: 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.
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. doi:10.1021/acsmaterialslett.9b00274.
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. doi:10.1021/acsmaterialslett.9b00274.
@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},
issn = {2639-4979},
number = 4,
volume = 1,
place = {United States},
year = {2019},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on September 5, 2020
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