Extremely high-performance visible light photodetector in the Sb2SeTe2 nanoflake

作者:Huang, Shiu Ming*; Huang, Shih Jhe; Yan, You Jhih; Yu, Shih Hsun; Chou, Mitch; Yang, Hung Wei; Chang, Yu Shin; Chen, Ruei San
来源:Scientific Reports, 2017, 7(1): 45413.
DOI:10.1038/srep45413

摘要

The photocurrent was performed in the Sb2SeTe2 topological insulator at a wavelength of 532 nm. It exhibits extremely high performance that the responsivity and the photoconductive gain reach 2293 AW(-1) and 5344 at 1 V. This high photoresponse is orders of magnitude higher than most reported values in topological insulators and two-dimensional transitional metal dichalcogenides. This finding suggests that the Sb2SeTe2 nanoflake has great potential for future optoelectronic device applications.