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

Journal Article · · Advanced Functional Materials
 [1];  [2];  [2];  [2];  [3];  [2]
  1. Univ. of Oklahoma, Norman, OK (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. of Oklahoma, Norman, OK (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
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 PL peak in Rb2AgBr3. This is in sharp contrast to Rb2CuX3, in which the PL is dominated by the emission by STEs. Moreover, the replacement of Cu(I) with Ag(I) in A2AgX3 significantly improves photostability and stability in the air under ambient conditions, which enables their consideration for practical applications. Thus, luminescent inks based on A2AgX3 are prepared and successfully used in anti-counterfeiting applications. The excellent light emission properties, significantly improved stability, simple preparation method, and tunable light emission properties demonstrated by A2AgX3 suggest that silver(I) halides may be attractive alternatives to toxic lead halide perovskites and unstable copper(I) halides for optical 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
OSTI ID:
1820749
Alternate ID(s):
OSTI ID: 1818183
OSTI ID: 1855653
Journal Information:
Advanced Functional Materials, Journal Name: Advanced Functional Materials Journal Issue: 48 Vol. 31; ISSN 1616-301X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (56)

Metal Halide Scintillators with Fast and Self‐Absorption‐Free Defect‐Bound Excitonic Radioluminescence for Dynamic X‐Ray Imaging journal December 2020
Quantum-Dot Light-Emitting Diodes for Large-Area Displays: Towards the Dawn of Commercialization journal March 2017
Lead-Free Highly Efficient Blue-Emitting Cs 3 Cu 2 I 5 with 0D Electronic Structure journal September 2018
Lead‐Free Halide Rb 2 CuBr 3 as Sensitive X‐Ray Scintillator journal September 2019
Energy Manipulation in Lanthanide‐Doped Core–Shell Nanoparticles for Tunable Dual‐Mode Luminescence toward Advanced Anti‐Counterfeiting journal October 2020
Recent R&D Trends in Inorganic Single-Crystal Scintillator Materials for Radiation Detection journal February 2015
Rb 2 CuX 3 (X = Cl, Br): 1D All‐Inorganic Copper Halides with Ultrabright Blue Emission and Up‐Conversion Photoluminescence journal November 2019
Cost-Performance Analysis of Perovskite Solar Modules journal September 2016
Spontaneous Self‐Assembly of Cesium Lead Halide Perovskite Nanoplatelets into Cuboid Crystals with High Intensity Blue Emission journal May 2019
Excitons in Metal‐Halide Perovskites journal February 2020
Stability Issue of Perovskite Solar Cells under Real‐World Operating Conditions journal April 2020
Color Tunable Self‐Trapped Emissions from Lead‐Free All Inorganic IA‐IB Bimetallic Halides Cs‐Ag‐X (X = Cl, Br, I) journal October 2020
Self-trapped holes in ammonium silver bromide crystal journal June 1994
Ultraviolet luminescence from latent fingerprints journal April 1993
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set journal July 1996
Progress toward Stable Lead Halide Perovskite Solar Cells journal October 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
Recent advances in quantum dot-based light-emitting devices: Challenges and possible solutions journal April 2019
Highly-efficient all-inorganic lead-free 1D CsCu2I3 single crystal for white-light emitting diodes and UV photodetection journal March 2021
Lead-free violet-emitting K2CuCl3 single crystal with high photoluminescence quantum yield journal November 2020
K 2 CuX 3 (X = Cl, Br): All-Inorganic Lead-Free Blue Emitters with Near-Unity Photoluminescence Quantum Yield journal June 2020
Thin-Film Deposition and Characterization of a Sn-Deficient Perovskite Derivative Cs 2 SnI 6 journal March 2016
The Future Is Blue (LEDs): Why Chemistry Is the Key to Perovskite Displays journal June 2019
Rb 4 Ag 2 BiBr 9 : A Lead-Free Visible Light Absorbing Halide Semiconductor with Improved Stability journal February 2019
All-Inorganic Copper Halide as a Stable and Self-Absorption-Free X-ray Scintillator journal February 2020
Highly Efficient Self-Trapped Exciton Emission of a (MA) 4 Cu 2 Br 6 Single Crystal journal May 2020
Lead-Free Perovskite Nanocrystals for Light-Emitting Devices journal March 2018
Self-Trapped Excitons in All-Inorganic Halide Perovskites: Fundamentals, Status, and Potential Applications journal March 2019
Near-Unity Photoluminescence Quantum Yield in Blue-Emitting Cs 3 Cu 2 Br 5– x I x (0 ≤ x ≤ 5) journal February 2019
Lead-Free Halide Perovskites and Perovskite Variants as Phosphors toward Light-Emitting Applications journal August 2019
Lead-Free Halide Light-Emitting Diodes with External Quantum Efficiency Exceeding 7% Using Host–Dopant Strategy journal June 2021
Rational Design: A High-Throughput Computational Screening and Experimental Validation Methodology for Lead-Free and Emergent Hybrid Perovskites journal March 2017
Emission Trend of Multiple Self-Trapped Excitons in Luminescent 1D Copper Halides journal January 2020
Bright Luminescence from Nontoxic CsCu 2 X 3 (X = Cl, Br, I) journal August 2019
Brightly Luminescent and Color-Tunable Colloidal CH 3 NH 3 PbX 3 (X = Br, I, Cl) Quantum Dots: Potential Alternatives for Display Technology journal February 2015
Broadband Emission in Hybrid Organic–Inorganic Halides of Group 12 Metals journal December 2018
Disphenoidal Zero-Dimensional Lead, Tin, and Germanium Halides: Highly Emissive Singlet and Triplet Self-Trapped Excitons and X-ray Scintillation journal June 2019
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
Colloidal lead halide perovskite nanocrystals: synthesis, optical properties and applications journal November 2016
The emergence of perovskite solar cells journal July 2014
Accelerated discovery of stable lead-free hybrid organic-inorganic perovskites via machine learning journal August 2018
Inkjet-printed unclonable quantum dot fluorescent anti-counterfeiting labels with artificial intelligence authentication journal June 2019
Advancements in perovskite solar cells: photophysics behind the photovoltaics journal January 2014
An overview on enhancing the stability of lead halide perovskite quantum dots and their applications in phosphor-converted LEDs journal January 2019
High-throughput computational design of organic–inorganic hybrid halide semiconductors beyond perovskites for optoelectronics journal January 2019
Broadband emission from zero-dimensional Cs 4 PbI 6 perovskite nanocrystals journal January 2020
Solids with high ionic conductivity in group 1 halide systems journal January 1967
Potential-energy surfaces for excited states in extended systems journal March 2004
Rationale for mixing exact exchange with density functional approximations journal December 1996
Optical spectroscopy of the Ag+ ion in NaF: Experimental results and analysis of manifestations of the Jahn–Teller effect journal November 1998
Microscopic origin of multiple exciton emission in low-dimensional lead halide perovskites journal November 2019
Density-functional theory beyond the Hohenberg-Kohn theorem journal May 1999
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Generalized Gradient Approximation Made Simple journal October 1996
The density functional formalism, its applications and prospects journal July 1989
Inorganic scintillating materials and scintillation detectors journal January 2018