A plausible method of preparing the ideal p-n junction interface of a thermoelectric material by surface doping

Ji-Eun Lee,Jinwoong Hwang,Minhee Kang,Hyun-Jeong Joo,Hyejin Ryu,Kyoo Kim,Yongsam Kim,Namdong Kim,Anh Tuan Duong,Sunglae Cho,Sung-Kwan Mo,Choongyu Hwang,Imjeong Ho-Soon Yang

Applied Surface Science（2020）

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摘要

•Pristine SnSe is a p-type semiconductor.•Ta adsorption results in the shift of the band structure towards the higher binding energy.•The surface of a p-type semiconductor hosts n-type charge carriers.•This result suggests the possible realization of an ideal p-n junction interface.

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关键词

SnSe,Angle-resolved photoemission,p-n junction,Charge transfer,Tantalum

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