Synthesis, Structure, Band Gap, and Near-Infrared Photosensitivity of a New Chalcogenide Crystal, (NH4)4Ag12Sn7Se22

Ke Zhao Du, Xing Hui Qi, Mei Ling Feng, Jian Rong Li, Xing Zhi Wang, Cheng Feng Du, Guo Dong Zou, Meng Wang, Xiao Ying Huang

科研成果: 期刊稿件文章同行评审

14 引用 (Scopus)

摘要

A new chalcogenide crystal, (NH4)4Ag12Sn7Se22 (FJSM-STS), has been solvothermally synthesized. The crystal structure, which is composed of arrays of [Sn3Se9]n6n- chains interconnecting [SnAg6Se10]n10n- and [Ag3Se4]n5n- layers, is unprecedented among the reported A/Ag/Sn/Q (A = cation; Q = S, Se, and Te) compounds. Optical absorption together with theoretical calculations of the band structure indicate a direct band gap of 1.21 eV for FJSM-STS, which is close to the ideal band gap to maximize the photoconversion efficiency proposed by Shockley and Queisser. The toxic-metal-free crystal of FJSM-STS exhibits obvious photosensitivity in the near-infrared range. The variates of power and temperature on the photosensitivity have been studied.

源语言英语
页(从-至)5110-5112
页数3
期刊Inorganic Chemistry
55
11
DOI
出版状态已出版 - 6 6月 2016
已对外发布

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