Low temperature, solution-processed alumina for organic solar cells

In this work, we have reported for the first time a facile route for developing solution-processed Al 2 O 3 film at a greatly reduced processing temperature and studied its applications in producing inverted polymer solar cells (PSCs). These PSCs using Al 2 O 3 thin film as the electron-extraction layer demonstrated improved diode characteristics and achieved a 20% higher power conversion efficiency than devices using the conventional ZnO buffer layer. Furthermore, the low temperature processing of the Al 2 O 3 film makes it compatible with fabrication of flexible organic electronic devices based on plastic substrates.

Jun Peng, Qijun Sun, Zhichun Zhai, Jianyu Yuan, Xiaodong Huang, Zhiming Jin, Kunyang Li, Suidong Wang, Haiqiao Wang and Wanli Ma

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