Yin Jie, Shi Shaozhen, Wei Jiazhen, He Guohang, Fan Lin, Guo Junxue, Zhang Kaixuan, Xu Wenli, Yuan Cang, Wang Yunying, Wang Liwen, Pu Xipeng, Li Wenzhi, Zhang Dafeng, Wang Jie, Ren Xiaozhen, Ma Huiyan, Shao Xin, Zhou Huawei
College of Materials Science and Engineering, Liaocheng University; School of Chemistry and Chemical Engineering, Liaocheng University, Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology Liaocheng 252059 China
RSC Adv. 2018 May 30;8(36):19958-19963. doi: 10.1039/c8ra03498b.
Organic-inorganic hybrid-based lead perovskites show inherent and unavoidable problems such as structural instability and toxicity. Therefore, developing low-cost and environment-friendly organic-inorganic hybrid materials is extremely urgent. In this study, we prepared earth-abundant and environment-friendly organic-inorganic hybrid tetrachloroferrate salt CHNHFeCl (MAFeCl) for optoelectronic applications. The single crystal diffraction data are assigned to the orthorhombic MAFeCl ( space group), with parameters = 11.453 (5) Å, = 7.332 (3) Å, = 10.107 (5) Å, = 90.000, = 90.000, and = 90.000. The band gap of MAFeCl is approximately 2.15 eV. Moreover, three-emission luminescence (398, 432 and 664 nm) was observed. To the best of our knowledge, this is the first study involving the investigation of the structure, adsorption properties and photoelectric behavior of MAFeCl. A low cost photodetector based on the MAFeCl thin film is efficient under different monochromatic light from 330 nm to 410 nm with different chopping frequencies (1.33 Hz to 40 Hz). The photoelectric conversion efficiency based on FTO/TiO/MAFeCl/carbon electrode device reaches 0.054% ( = 319 mV, = 0.375 mA cm, and fill factor = 0.45) under AM1.5, 100 mW cm simulated illumination. Our findings will attract attention from the magnetic, piezoelectric and photoelectronic research fields.
基于有机-无机杂化的铅基钙钛矿存在诸如结构不稳定性和毒性等内在且不可避免的问题。因此，开发低成本且环境友好的有机-无机杂化材料迫在眉睫。在本研究中，我们制备了用于光电子应用的储量丰富且环境友好的有机-无机杂化四氯铁酸盐CHNHFeCl（MAFeCl）。单晶衍射数据归属于正交晶系的MAFeCl（空间群），参数为 = 11.453（5）Å， = 7.332（3）Å， = 10.107（5）Å， = 90.000， = 90.000，且 = 90.000。MAFeCl的带隙约为2.15 eV。此外，观察到了三发射发光（398、432和664 nm）。据我们所知，这是首次涉及对MAFeCl的结构、吸附性能和光电行为进行研究的报道。基于MAFeCl薄膜的低成本光电探测器在330 nm至410 nm的不同单色光以及不同斩波频率（1.33 Hz至40 Hz）下均具有高效性能。在AM1.5、100 mW cm模拟光照下，基于FTO/TiO/MAFeCl/碳电极器件的光电转换效率达到0.054%（ = 319 mV， = 0.375 mA cm，填充因子 = 0.45）。我们的研究结果将引起磁性、压电和光电子研究领域的关注。
