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

Abstract

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 anionic $$^1_∞[CuX_3]$$ 2- ribbons separated by Rb+ cations. The measured record high photoluminescence quantum yield values range from 64% to 100% for Rb2CuBr3 and Rb2CuCl3, respectively. Furthermore, the measured emission linewidths are quite narrow with full width at half maximum values of 54 and 52 nm for Rb2CuBr3 and Rb2CuCl3, respectively. Single crystals of Rb2CuCl3 demonstrate an anti-Stokes photoluminescence signal, shown for the first time for Pb-free metal halides. The discovery of highly efficient narrow blue emitters based on a nontoxic and inexpensive metal copper paves a way for the consideration of low-cost and environmentally friendly copper halides for practical applications.

Authors:
 [1];  [1];  [1];  [2]; ORCiD logo [3]; ORCiD logo [1]
  1. Univ. of Oklahoma, Norman, OK (United States)
  2. Univ. of California, Santa Barbara, CA (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
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); National Science Foundation (NSF)
OSTI Identifier:
1607023
Alternate Identifier(s):
OSTI ID: 1574054
Grant/Contract Number:  
AC05-00OR22725; DMR 1720256; CHE-1726630
Resource Type:
Accepted Manuscript
Journal Name:
Advanced Optical Materials
Additional Journal Information:
Journal Volume: 8; Journal Issue: 2; Journal ID: ISSN 2195-1071
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 1D metal halide; blue-emitting materials; Pb-free halides; up-conversion photoluminescence

Citation Formats

Creason, Tielyr, Yangui, Aymen, Roccanova, Rachel, Strom, Amanda, Du, Mao-Hua, and Saparov, Bayrammurad. Rb2CuX3 (X = Cl, Br): 1D All-Inorganic Copper Halides with Ultrabright Blue Emission and Up-Conversion Photoluminescence. United States: N. p., 2019. Web. doi:10.1002/adom.201901338.
Creason, Tielyr, Yangui, Aymen, Roccanova, Rachel, Strom, Amanda, Du, Mao-Hua, & Saparov, Bayrammurad. Rb2CuX3 (X = Cl, Br): 1D All-Inorganic Copper Halides with Ultrabright Blue Emission and Up-Conversion Photoluminescence. United States. doi:https://doi.org/10.1002/adom.201901338
Creason, Tielyr, Yangui, Aymen, Roccanova, Rachel, Strom, Amanda, Du, Mao-Hua, and Saparov, Bayrammurad. Wed . "Rb2CuX3 (X = Cl, Br): 1D All-Inorganic Copper Halides with Ultrabright Blue Emission and Up-Conversion Photoluminescence". United States. doi:https://doi.org/10.1002/adom.201901338. https://www.osti.gov/servlets/purl/1607023.
@article{osti_1607023,
title = {Rb2CuX3 (X = Cl, Br): 1D All-Inorganic Copper Halides with Ultrabright Blue Emission and Up-Conversion Photoluminescence},
author = {Creason, Tielyr and Yangui, Aymen and Roccanova, Rachel and Strom, Amanda and Du, Mao-Hua and Saparov, Bayrammurad},
abstractNote = {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 anionic $^1_∞[CuX_3]$ 2- ribbons separated by Rb+ cations. The measured record high photoluminescence quantum yield values range from 64% to 100% for Rb2CuBr3 and Rb2CuCl3, respectively. Furthermore, the measured emission linewidths are quite narrow with full width at half maximum values of 54 and 52 nm for Rb2CuBr3 and Rb2CuCl3, respectively. Single crystals of Rb2CuCl3 demonstrate an anti-Stokes photoluminescence signal, shown for the first time for Pb-free metal halides. The discovery of highly efficient narrow blue emitters based on a nontoxic and inexpensive metal copper paves a way for the consideration of low-cost and environmentally friendly copper halides for practical applications.},
doi = {10.1002/adom.201901338},
journal = {Advanced Optical Materials},
number = 2,
volume = 8,
place = {United States},
year = {2019},
month = {11}
}

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