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

Journal Article · · 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 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.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
Grant/Contract Number:
AC05-00OR22725; DMR 1720256; CHE-1726630
OSTI ID:
1607023
Alternate ID(s):
OSTI ID: 1574054
Journal Information:
Advanced Optical Materials, Vol. 8, Issue 2; ISSN 2195-1071
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 73 works
Citation information provided by
Web of Science

References (46)

Rational molecular passivation for high-performance perovskite light-emitting diodes journal March 2019
Can Laser Light Cool Semiconductors? journal June 2004
Thermally Stable Copper(II)-Doped Cesium Lead Halide Perovskite Quantum Dots with Strong Blue Emission journal February 2019
Laser cooling of solids to cryogenic temperatures journal January 2010
Electron–phonon interaction in efficient perovskite blue emitters journal May 2018
Bright Luminescence from Nontoxic CsCu 2 X 3 (X = Cl, Br, I) journal August 2019
Laser cooling of a semiconductor by 40 kelvin journal January 2013
Polaron self-localization in white-light emitting hybrid perovskites journal January 2017
Phase diagram and high copper ion conductivity of the copper(I) chloride-rubidium chloride system journal November 1983
Structural characterization, vibrational, optical properties and DFT investigation of a new luminescent organic–inorganic material: (C6H14N)3Bi2I9 journal May 2015
Disphenoidal Zero-Dimensional Lead, Tin, and Germanium Halides: Highly Emissive Singlet and Triplet Self-Trapped Excitons and X-ray Scintillation journal June 2019
Hybrid Organic–Inorganic Halides (C 5 H 7 N 2 ) 2 MBr 4 (M = Hg, Zn) with High Color Rendering Index and High-Efficiency White-Light Emission journal March 2019
Spontaneous Self‐Assembly of Cesium Lead Halide Perovskite Nanoplatelets into Cuboid Crystals with High Intensity Blue Emission journal May 2019
Unraveling luminescence mechanisms in zero-dimensional halide perovskites journal January 2018
Lead-Free Highly Efficient Blue-Emitting Cs 3 Cu 2 I 5 with 0D Electronic Structure journal September 2018
Photoluminescence Up-Conversion in CsPbBr 3 Nanocrystals journal October 2017
Six-fold plasmonic enhancement of thermal scavenging via CsPbBr3 anti-Stokes photoluminescence journal January 2019
Organic–Inorganic Perovskites: Structural Versatility for Functional Materials Design journal March 2016
Synthesis, Crystal and Electronic Structures, and Optical Properties of (CH 3 NH 3 ) 2 CdX 4 (X = Cl, Br, I) journal November 2017
Low-Dimensional Organometal Halide Perovskites journal November 2017
Optical refrigeration journal December 2007
Self-Trapped Excitons in All-Inorganic Halide Perovskites: Fundamentals, Status, and Potential Applications journal March 2019
Laser cooling of organic–inorganic lead halide perovskites journal December 2015
Commentary: The Materials Project: A materials genome approach to accelerating materials innovation journal July 2013
Thin-Film Deposition and Characterization of a Sn-Deficient Perovskite Derivative Cs 2 SnI 6 journal March 2016
Up-converted photoluminescence from C H 3 N H 3 Pb I 3 perovskite semiconductors: Implications for laser cooling journal February 2019
Efficient and stable emission of warm-white light from lead-free halide double perovskites journal November 2018
Crystal structures and ionic conductivities of ternary derivatives of the silver and copper monohalides—II: ordered phases within the (AgX)x–(MX)1−x and (CuX)x–(MX)1−x (M=K, Rb and Cs; X=Cl, Br and I) systems journal September 2004
Low dimensional metal halide perovskites and hybrids journal July 2019
Characterisation of n-type γ-CuCl on Si for UV optoelectronic applications journal April 2007
Rb 4 Ag 2 BiBr 9 : A Lead-Free Visible Light Absorbing Halide Semiconductor with Improved Stability journal February 2019
Broadband Emission in Hybrid Organic–Inorganic Halides of Group 12 Metals journal December 2018
Defect-Mediated CdS Nanobelt Photoluminescence Up-Conversion journal July 2017
Interband Optical Transitions in Extremely Anisotropic Semiconductors. I. Bound and Unbound Exciton Absorption journal October 1966
Structural phase transition causing anomalous photoluminescence behavior in perovskite (C 6 H 11 NH 3 ) 2 [PbI 4 ] journal December 2015
Color-stable highly luminescent sky-blue perovskite light-emitting diodes journal August 2018
Electron-hole diffusion lengths > 175 μm in solution-grown CH 3 NH 3 PbI 3 single crystals journal January 2015
Blue Emitting Single Crystalline Assembly of Metal Halide Clusters journal September 2018
Efficient blue light-emitting diodes based on quantum-confined bromide perovskite nanostructures journal August 2019
UV emission on a Si substrate: Optical and structural properties of γ-CuCl on Si grown using liquid phase epitaxy techniques journal May 2009
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
Near-Unity Photoluminescence Quantum Yield in Blue-Emitting Cs 3 Cu 2 Br 5– x I x (0 ≤ x ≤ 5) journal February 2019
Anti-Stokes Ultraviolet Luminescence and Exciton Detrapping in the Two-Dimensional Perovskite (C 6 H 5 C 2 H 4 NH 3 ) 2 PbCl 4 journal June 2019
Highly enhanced UV responsive conductivity and blue emission in transparent CuBr films: implication for emitter and dosimeter applications journal January 2017
Yellowish White-Light Emission Involving Resonant Energy Transfer in a New One-Dimensional Hybrid Material: (C 9 H 10 N 2 )PbCl 4 journal September 2018
Disphenoidal Zero-Dimensional Lead, Tin, and Germanium Halides: Highly Emissive Singlet and Triplet Self-Trapped Excitons and X-ray Scintillation text January 2019