Open-circuit Voltage Loss in CH3NH3SnI3 Perovskite Solar Cells
Open-circuit Voltage Loss in CH3NH3SnI3 Perovskite Solar Cells
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DOI：
10.1246/cl.160994
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发表时间：
2017-02-01
影响因子：
1.6
通讯作者：
Ohkita, Hideo
中科院分区：
文献类型：
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作者：
Do Kim, Hyung;Miyamoto, Yoshihiro;Ohkita, Hideo
基于卤化锡的有机-无机钙钛矿太阳能电池由于来自带隙能量的大的光子能量损失（大至0.8- 1.0eV）而表现出小的开路电压（VOC）。在这项研究中，我们讨论了在CH 3 NH3 SnI 3为基础的设备的VOC损失的起源，通过测量的VOC的温度依赖性。结果发现，VOC的大量损失主要是由于界面处的表面复合而不是钙钛矿中的体复合。
Organic-inorganic perovskite solar cells based on tin halides exhibit a small open-circuit voltage (VOC) because of a large photon energy loss from band-gap energy, as large as 0.8-1.0 eV. In this study, we discussed the origin of the VOC loss in CH3NH3SnI3-based devices by measuring the temperature dependence of VOC. As a result, we found that the large loss in VOC is mainly due to the surface recombination at the interface rather than the bulk recombination in the perovskites.