Hysteresis-less and stable perovskite solar cells with a self-assembled monolayer

Ganbaatar Tumen-Ulzii, Toshinori Matsusima, Dino Klotz, Matthew R. Leyden, Pangpang Wang, Chuanjiang Qin, Jin Wook Lee, Sung Joon Lee, Yang Yang, Chihaya Adachi

研究成果: ジャーナルへの寄稿学術誌査読

61 被引用数 (Scopus)


Organic–inorganic halide perovskites are promising for use in solar cells because of their efficient solar power conversion. Current–voltage hysteresis and degradation under illumination are still issues that need to be solved for their future commercialization. However, why hysteresis and degradation occur in typical perovskite solar cell structures, with an electron transport layer of metal oxide such as SnO2, has not been well understood. Here we show that one reason for the hysteresis and degradation is because of the localization of positive ions caused by hydroxyl groups existing at the SnO2 surface. We deactivate these hydroxyl groups by treating the SnO2 surface with a self-assembled monolayer. With this surface treatment method, we demonstrate hysteresis-less and highly stable perovskite solar cells, with no degradation after 1000 h of continuous illumination.

ジャーナルCommunications Materials
出版ステータス出版済み - 12月 2020

!!!All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 材料力学


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