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 |
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页(从-至) | 5110-5112 |
页数 | 3 |
期刊 | Inorganic Chemistry |
卷 | 55 |
期 | 11 |
DOI | |
出版状态 | 已出版 - 6 6月 2016 |
已对外发布 | 是 |