Efficient Perovskite Solar Cells Based on Multilayer Transparent Electrodes through Morphology Control

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• 作者：Xue Liu ; Xiaoyang Guo ; Zhihong Gan ; Nan Zhang ; Xingyuan Liu
• 刊名：Journal of Physical Chemistry C
• 出版年：2016
• 出版时间：December 1, 2016
• 年：2016
• 卷：120
• 期：47
• 页码：26703-26709
• 全文大小：496K
• ISSN：1932-7455

文摘

A multilayer transparent electrode WO₃/Ag/WO₃ (WAW) has been introduced into perovskite solar cells (PSCs). It is found that the substrate has an obvious effect on the perovskite morphology and crystallization and thus power conversion efficiency (PCE) of the PSCs. The precursor composition and its effect on the morphology, crystal, and device properties of the perovskite films based on WAW and ITO electrodes have been investigated in detail. When the CH₃NH₃I (MAI):PbI₂ molar ratio is 1.04:1, the perovskite film shows flat and dense morphology formed by the complete reaction of MAI and PbI₂, and PSC device shows the maximum PCE value of 9.73%, comparable with the controlled device with the MAI:PbI₂ molar ratio of 1:1 based on ITO electrode (10.51%). Meanwhile, a flexible PSC based on WAW transparent electrode has also been fabricated, which exhibits a PCE of 8.04%, indicating that WAW multilayer transparent electrodes have the potential application in PSCs, especially in flexible PSCs.