Salado Manuel, Ramos F Javier, Manzanares Valentin M, Gao Peng, Nazeeruddin Mohammad Khaja, Dyson Paul J, Ahmad Shahzada
Abengoa Research, Abengoa, C/Energía Solar n° 1, Campus Palmas Altas, 41014, Sevilla, Spain.
Institute of Chemical Sciences and Engineering, Swiss Federal Institute of Technology Lausanne (EPFL), CH 1015, Lausanne, Switzerland.
ChemSusChem. 2016 Sep 22;9(18):2708-2714. doi: 10.1002/cssc.201601030. Epub 2016 Aug 24.
The principle limitation of perovskite solar cells is related to their instability and, hence, their limited lifetime. Herein, we employ an imidazolium iodide dopant, 1-methyl-3-(1H,1H,2H,2H-nonafluorohexyl)-imidazolium iodide, containing a perfluorous appendage, which leads to prolonged (unencapsulated, under Ar atmosphere) device activities exceeding 100 days without compromising the power conversion efficiency and other photovoltaic parameters. The extended lifetime of the device can be attributed, at least in part, to the hydrophobic nature of the imidazolium iodide salt. The functionalization of the perovskite material was found to have negligible influence on the perovskite crystal structure.
钙钛矿太阳能电池的主要局限性与其不稳定性相关，因此其寿命有限。在此，我们使用一种含全氟支链的碘化咪唑鎓掺杂剂，即1-甲基-3-(1H,1H,2H,2H-九氟己基) -碘化咪唑鎓，这使得（在未封装、氩气气氛下）器件活性延长超过100天，且不影响功率转换效率和其他光伏参数。器件寿命的延长至少部分归因于碘化咪唑鎓盐的疏水性。研究发现，钙钛矿材料的功能化对钙钛矿晶体结构的影响可忽略不计。
