Improved performance of inverted organic solar cells by using La-doped TiO₂ film as electron transport layer

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• 作者：Jianbin Sun ; Simin Yu ; Qiao Zheng…
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：28
• 期：2
• 页码：2272-2278
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Optical and Electronic Materials; Characterization and Evaluation of Materials;
• 出版者：Springer US
• ISSN：1573-482X
• 卷排序：28

文摘

We investigated the performance of the inverted polymer solar cells with an electron transport layer of the La-doped TiO₂ film. The different La-doped ratios of TiO₂ films were prepared by a simple sol–gel method. The device with 0.5 mol% La-doped TiO₂ film shows an enhancement of the power conversion efficiency comparing with that of the device with bare TiO₂ film. Further studies confirm that the grain size of TiO₂ with La3+ doped film is decreased and the compactness of the film is improved. Besides, La-doped TiO₂ film shows the improved morphology and optical properties leading to the current density of the cells increase from 6.54 to 9.71 mA/cm2.