TY - JOUR
T1 - Luminescent Copper(I) Halides for Optoelectronic Applications
AU - Yin, Jun
AU - Lei, Qiong
AU - Han, Yu
AU - Bakr, Osman M.
AU - Mohammed, Omar F.
N1 - Funding Information:
This study was supported by the King Abdullah University of Science and Technology.
Publisher Copyright:
© 2021 Wiley-VCH GmbH.
PY - 2021/12
Y1 - 2021/12
N2 - Lead-free copper(I) halides have been demonstrated to exhibit high photoluminescence quantum yields with high air and light stability, making them one of the most promising semiconductors for next-generation light-emitting diode devices. The low-dimensional structures and soft lattices of Cu(I) halides induce the formation of self-trapped excitons (STEs) to achieve broadband emissions with high quantum yields. Herein, the recent studies on the electronic and optical properties of Cu(I) halides (i.e., Cs3Cu2X5, CsCu2X3, and A2CuX3, where A = K+ or Rb+, X = Cl−, Br−, or I−) are reviewed and particular emphasis is placed on the role of the dimensionality and the halide in governing the electronic and optical properties (e.g., emission color and photoluminescence efficiency) via STEs. Several optoelectronic applications of Cu(I) halides are also discussed. In the last section, perspectives and challenges for the future development of Cu(I) halides in both optoelectronic and photocatalytic applications are outlined.
AB - Lead-free copper(I) halides have been demonstrated to exhibit high photoluminescence quantum yields with high air and light stability, making them one of the most promising semiconductors for next-generation light-emitting diode devices. The low-dimensional structures and soft lattices of Cu(I) halides induce the formation of self-trapped excitons (STEs) to achieve broadband emissions with high quantum yields. Herein, the recent studies on the electronic and optical properties of Cu(I) halides (i.e., Cs3Cu2X5, CsCu2X3, and A2CuX3, where A = K+ or Rb+, X = Cl−, Br−, or I−) are reviewed and particular emphasis is placed on the role of the dimensionality and the halide in governing the electronic and optical properties (e.g., emission color and photoluminescence efficiency) via STEs. Several optoelectronic applications of Cu(I) halides are also discussed. In the last section, perspectives and challenges for the future development of Cu(I) halides in both optoelectronic and photocatalytic applications are outlined.
KW - copper halides
KW - optoelectronic devices
KW - photoluminescence
KW - self-trapped excitons
UR - http://www.scopus.com/inward/record.url?scp=85104989855&partnerID=8YFLogxK
U2 - 10.1002/pssr.202100138
DO - 10.1002/pssr.202100138
M3 - Review article
AN - SCOPUS:85104989855
SN - 1862-6254
VL - 15
JO - Physica Status Solidi - Rapid Research Letters
JF - Physica Status Solidi - Rapid Research Letters
IS - 12
M1 - 2100138
ER -