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High-performance lead-free quaternary antiperovskite photovoltaic candidate Ca6N2AsSb
Yanru Guo1, Xue Liu1, Huaxin Wang1
1Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education), College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China. huaxin.wang@cqu.edu.cn.
Abstract:
Accurate many-body perturbation theory-based calculations were used to study the electronic and excitonic properties of lead-free quaternary antiperovskite Ca6N2AsSb; large quasiparticle band gap renormalization, strong optical absorption, and low exciton binding energy, as well as high efficiency of >32% with a thickness of 500 nm were predicted.
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