Affiliation:
1. Institute of Ultrafast Optical Physics, Department of Applied Physics and MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing, Nanjing University of Science and Technology 1 , Nanjing 210094, People’s Republic of China
2. Institute of Frontier Chemistry, School of Chemistry and Chemical Engineering, Shandong University 2 , Qingdao 266237, People’s Republic of China
Abstract
Lead-free halide double perovskites (DPs) have been regarded as a class of environmentally friendly and promising optoelectronic materials. Herein, we report the synthesis, luminescence properties, and optoelectronic applications of lanthanide (Ln = Yb3+/Er3+)/M (M = Bi3+/Sb3+/Mn2+) codoped Cs2NaInCl6 single crystals (SCs). The Yb/Er codoped Cs2NaInCl6 SCs show upconversion and downshifting visible/short-wave infrared (SWIR) photoluminescence emission. After further introduction of Sb3+/Mn2+ ions into the host, bright blue and red emissions are observed with the PLQYs of 96.28% and 21.58%, respectively. With the incorporation of Bi3+ ions, the upconversion and visible/SWIR luminescence intensities of Yb/Er/Bi codoped Cs2NaInCl6 SCs are significantly enhanced. The incorporation of Bi3+ dopant in the DP host can construct a more efficient energy transfer process, resulting in excellent luminescence efficiency. The multi-ion codoped DP system exhibits great potential for optoelectronic applications in the fields of anticounterfeiting, photodetector, and x-ray imaging. This work will help guide the design and development of environmentally friendly multi-functional materials.
Funder
National Natural Science Foundation of China
National Key Research and Development Program of China
China Postdoctoral Science Foundation
Natural Science Foundation of Jiangsu Province
Shandong Provincial Natural Science Foundation
Postdoctoral Innovation Project of Shandong Province
Fundamental Research Funds for the Central Universities
Funding of NJUST