Strong Photoelectric Properties of Mn-Based Seleniumstannates with Alkali Metals as Structure-Directing Agents |
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| Authors: | Gele Teri Prof Xin Liu Na Li Muge Shele Namila E Liming Qi Sagala Bai Prof Menghe Baiyin |
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| Institution: | 1. Key Laboratory of Advanced Materials Chemistry and Devices (AMC&DLab) of The Education Department of Inner Mongolia Autonomous Region, College of Chemistry & Environmental Science, Inner Mongolia Normal University, Hohhot, Inner Mongolia, 010022 P. R. China;2. State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Department of Chemistry, Dalian University of Technology, Dalian, 116024 P. R. China |
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| Abstract: | In recent years, chalcogenides have received a lot of attention because of their potential applications as photoelectric material. This work describes the synthesis of the quaternary seleniumstannates Cs2MnSnSe4 ( 1 ) and Rb2MnSnSe4 ( 2 ) using solvothermal methods. The structure of compound 1 consists of charge-balanced Cs+ cation and one-dimensional (1D) anion MnSnSe4]n2− chain. Compound 2 possesses a unique two-dimensional (2D) anion MnSnSe4]n2− layer. It is noteworthy that the compounds exhibit a strong photocurrent response (ca. 45 μA/cm2 ( 1 ), ca. 80 μA/cm2 ( 2 )). Moreover, methylene blue (MB) was investigated for its photocatalytic degradation properties. In order to better understand the relationship between optical properties and electronic structure, a theoretical study was conducted. |
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| Keywords: | Alkali metals Band structure Mn-based seleniumstannates Photocurrent response Semiconductors Structure-directing agents |
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