Siqi Wang, Yi Wen, Yingcai Zhu, Ziyuan Wang, Dongrui Liu, Junqing Zheng, Shaoping Zhan, Hongyao Xie, Zhenhua Ge, Xiang Gao, Qian Cao, Cheng Chang, Li-Dong Zhao
The scarcity of Te hampers the widespread use of Bi2 Te3 -based thermoelectric modules. Here, the thermoelectric module potential of PbSe is investigated by improving its carrier mobility. Initially, large PbSe crystals are grown with the temperature gradient method to mitigate grain boundary effects on carrier transport. Subsequently, light doping with <1mole‰ halogens (Cl/Br/I) increases room-temperature carrier mobility to ~1600 cm2 V-1 s-1 , achieved by reducing carrier concentration compared to traditional heavy doping...
April 19, 2024: Small