Effects of Surface Blocking Layer of Sb2S3 on Nanocrystalline TiO2 for CH3NH3PbI3 Perovskite Solar Cells,The Journal of Physical Chemistry C |
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Effects of Surface Blocking Layer of Sb2S3 on Nanocrystalline TiO2 for CH3NH3PbI3 Perovskite Solar Cells,The Journal of Physical Chemistry C
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Sb2S3 layers were inserted at the interface between TiO2 and CH3NH3PbI3 perovskite to create CH3NH3PbI3 solar cells using inorganic hole transporting material (CuSCN). The CH3NH3PbI3 layer was spin-coated by a one-drop method onto the nanocrystalline TiO2 layer. The photoenergy conversion efficiencies were improved with Sb2S3 layers (the best efficiency: 5.24%). During the light exposure test without encapsulation, the CH3NH3PbI3 solar cells without Sb2S3 deteriorated to zero efficiency in 12 h and were completely changed from black to yellow because the perovskite CH3NH3PbI3 was changed to hexagonal PbI2. With Sb2S3, on the other hand, the CH3NH3PbI3 solar cells became stable against light exposure without encapsulation, which did not change the crystal structure or the wavelength edges of absorption and IPCE. Therefore, it was believed that degradation can occur at the interface between TiO2 and CH3NH3PbI3.
中文翻译：
将Sb 2 S 3层插入TiO 2和CH 3 NH 3 PbI 3钙钛矿之间的界面，以使用无机空穴传输材料（CuSCN）生成CH 3 NH 3 PbI 3太阳能电池。通过一滴法将CH 3 NH 3 PbI 3层旋涂到纳米晶体TiO 2层上。Sb 2 S 3层提高了光能转换效率（最佳效率：5.24％）。在无封装的曝光测试中，CH 3 NH没有Sb 2 S 3的3 PbI 3太阳能电池在12小时内效率下降为零，并且由于钙钛矿CH 3 NH 3 PbI 3变成了六角形PbI 2而完全从黑色变为黄色。另一方面，使用Sb 2 S 3时，CH 3 NH 3 PbI 3太阳能电池在没有封装的情况下对曝光稳定，这不会改变吸收和IPCE的晶体结构或波长边缘。因此，认为可以在TiO 2和CH之间的界面处发生降解。3 NH 3 PbI 3。 |
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