钙钛矿(结构)
卤化物
材料科学
光电子学
铅(地质)
介电谱
重组率
太阳能电池
电子
重组
纳米技术
化学
无机化学
电极
结晶学
物理
物理化学
生物化学
量子力学
地貌学
电化学
基因
地质学
作者
Emilio J. Juárez‐Pérez,Michael Wuβler,Francisco Fabregat‐Santiago,K. Lakus-Wollny,Eric Mankel,Thomas Mayer,Wolfram Jaegermann,Iván Mora‐Seró
摘要
The effect of electron- and hole-selective contacts in the final cell performance of hybrid lead halide perovskite, CH3NH3PbI3, solar cells has been systematically analyzed by impedance spectroscopy. Complete cells with compact TiO2 and spiro-OMeTAD as electron- and hole-selective contacts have been compared with incomplete cells without one or both selective contacts to highlight the specific role of each contact. It has been described how selective contacts contribute to enhance the cell FF and how the hole-selective contact is mainly responsible for the high Voc in this kind of device. We have determined that the recombination rate is mainly governed by the selective contacts. This fact has important implication for the future optimization of perovskite solar cells. Finally, we have developed a method to analyze the results obtained, and it has been applied for three different electron-selecting materials: TiO2, ZnO, and CdS.
科研通智能强力驱动
Strongly Powered by AbleSci AI