Bending Durable and Recyclable Mesostructured Perovskite Solar Cells Based on Superaligned ZnO Nanorod Electrode

Xingyue Zhao, Heping Shen, Rujie Sun, Qiang Luo, Xin Li, Yu Zhou, Meiqian Tai, Jianbao Li, Yanfeng Gao, Xin Li, Hong Lin

Research output: Contribution to journalArticle (Academic Journal)

10 Citations (Scopus)

Abstract

Though high‐quality perovskite films can be achieved under low‐temperature, the efficient charge selective materials, such as the most widely used TiO2, require high‐temperature sintering process, hindering mass production with roll‐to‐roll process by using flexible substrate. Here, a low‐temperature (90 °C) process is developed for preparing superaligned ZnO nanorods (SAZNRs), serving as mesostructured scaffold in direct contact with the perovskite layer. By rational design of the length of the SAZNRs, the perovskite solar cell (PSC), reaches a highest power conversion efficiency of ≈13.8% with largely suppressed hysteresis behavior. More importantly, this nano‐array design demonstrates outstanding mechanical robustness after being incorporated onto the flexible substrate, resulting in a performance preservation of 90% after 1000 bending cycles with a curvature radius of 4 mm. Finite element analysis indicate that the reduction of device performance after bending is ascribed to the cracks occurred in AZO stress concentration layer, which is attested by experiment as well. Besides, the SAZNRs ETM can be reused for fabricating new perovskite solar cells with comparable photovoltaic performance in a time‐saving and scalable manner, paving the way for industrial production of PSCs.
Original languageEnglish
Pages (from-to)1700194
JournalSolar RRL
Volume2
Issue number5
DOIs
Publication statusPublished - 28 Feb 2018

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