title: Extremely high-performance visible light photodetector in the Sb2SeTe2nanoflake.
abstract: The photocurrent was performed in the Sb2SeTe2topological insulator at a wavelength of 532 nm. It exhibits extremely high performance that the responsivity and the photoconductive gain reach 2293 AW-1and 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 Sb2SeTe2nanoflake has great potential for future optoelectronic device applications.
authors.affiliation: Department of Physics, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan.
authors.forename: Shiu-Ming
authors.initials: SM
authors.lastname: Huang
authors.affiliation: Department of Physics, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan.
authors.forename: Shih-Jhe
authors.initials: SJ
authors.lastname: Huang
authors.affiliation: Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan.
authors.forename: You-Jhih
authors.initials: YJ
authors.lastname: Yan
authors.affiliation: Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan.
authors.forename: Shih-Hsun
authors.initials: SH
authors.lastname: Yu
authors.affiliation: Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan.|Taiwan Consortium of Emergent Crystalline Materials, TCECM, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan.
authors.forename: Mitch
authors.initials: M
authors.lastname: Chou
authors.affiliation: Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.
authors.forename: Hung-Wei
authors.initials: HW
authors.lastname: Yang
authors.affiliation: Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.
authors.forename: Yu-Shin
authors.initials: YS
authors.lastname: Chang
authors.affiliation: Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.
authors.forename: Ruei-San
authors.initials: RS
authors.lastname: Chen