Extremely high-performance visible light photodetector in the Sb2SeTe2 nanoflake

• DOI: 10.1038/srep45413
• Publication Date: 2017-03-28T12:30:12Z
• Authors: Shiu-Ming Huang; Shih-Jhe Huang; You-Jhih Yan; Shih-Hsun Yu; Mitch Chou; Hung-Wei Yang; Yu-Shin Chang; Ruei-San Chen
• Keywords: Photocurrent; Photoconductivity; Topological insulator

Abstract The photocurrent was performed in the Sb 2 SeTe topological insulator at a wavelength of 532 nm. It exhibits extremely high performance that responsivity and photoconductive gain reach 2293 AW −1 5344 1 V. This photoresponse is orders magnitude higher than most reported values insulators two-dimensional transitional metal dichalcogenides. finding suggests nanoflake has great potential for future optoelectronic device applications.