Enhanced Electron Collection in Perovskite Solar Cells Employing Thermoelectric NaCo₂O₄/TiO₂ Coaxial Nanofibers

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• 作者：Tao Liu ; Cheng Wang ; Juan Hou ; Chuanbo Zhang ; Haijun Chen ; Hongcai He ; Ning Wang ; Hui Wu and Guozhong Cao
• 刊名：Small
• 出版年：2016
• 出版时间：October 5, 2016
• 年：2016
• 卷：12
• 期：37
• 页码：5146-5152
• 全文大小：1626K
• ISSN：1613-6829

文摘

Thermoelectric NaCo₂O₄/TiO₂ coaxial nanofibers are prepared and distributed in the perovskite solar cells. Under illumination, p-type NaCo₂O₄ can convert unwanted heat to thermal voltage, and thus promote the electron extraction and transport with the action of electrostatic force. These advantages collectively contribute to an overall power conversion efficiency improvement of ≈20% (15.14% vs 12.65%).