An efficient TiO2 electron transport layer for compact TiO2/polycrystalline BiFeO3 heterostructure thin film with enhanced photovoltaic performance

作者：Li, Min; Sun, Huajun^*; Liu, Xiaofang; Sui, Huiting; Liu, Pengdong

来源：Materials Letters, 2018, 219: 4-7.

DOI：10.1016/j.matlet.2018.02.059

• Heterostructure
• Thin films
• Electron transport layer
• Photovoltaic performance

In this letter, high-performance TiO2/BiFeO3 heterostructure thin film is successfully prepared by introducing sol-gel derived-TiO2 (SG-TiO2) electron transport layer. A significant improvement of photovoltaic performance has been achieved. 3.674% power conversion efficiency of the thin film is obtained with open-circuit voltage (V-oc) of 1.64 V, short-circuit photocurrent (Jsc) of 3.5 mA/cm(2) and fill factor (FF) of 64%, which implies that the introduction of a TiO2 would improve the photovoltaic performance under visible light illumination. Our work demonstrates that the TiO2/BFO heterostructure thin film possesses the potential for better use in the solar energy devices applications.

• 出版日期2018-5-15
• 单位武汉理工大学