储能科学与技术 ›› 2017, Vol. 6 ›› Issue (6): 1340-.doi: 10.12028/j.issn.2095-4239.2017.0051

• 进展与评述 • 上一篇    下一篇

有机无机界面修饰层改善铁酸铋薄膜太阳能电池的光伏性能

孙华君1,2，洪亭亭1，刘晓芳3，隋慧婷2，刘朋东1   

  1. 1武汉理工大学材料科学与工程学院，湖北 武汉 430070；2淄博高新技术产业开发区先进陶瓷研究院，山东 淄博255000；3武汉理工大学化学化工与生命科学学院，湖北 武汉 430070
  • 收稿日期:2017-05-08 修回日期:2017-05-12 出版日期:2017-11-01 发布日期:2017-11-01
  • 通讯作者: 刘晓芳，副教授，研究方向为有机无机纳米复合材料，E-mail：sdjclxf@sina.com
  • 作者简介:孙华君（1974—），男，教授，博士生导师，研究方向为压电铁电材料
  • 基金资助:
    国家自然科学基金项目（51372181）

Improvement of photovoltaic properties of bismuth ferrite film based solar cell using organic and inorganic interface layers

SUN Huajun 1,2, HONG Tingting1, LIU Xiaofang3, SUI Huiting2, LIU Pengdong1   

  1. 1School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China; 2Advanced Ceramics Institute of Zibo New & High-Tech Industrial Development Zone, Zibo 255000, Shandong, China; 3School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, Hubei, China
  • Received:2017-05-08 Revised:2017-05-12 Online:2017-11-01 Published:2017-11-01

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摘要： 采用溶胶-凝胶法旋涂铁酸铋（BiFeO3）薄膜，并结合层层退火工艺获得结晶良好的纯相BiFeO3晶体。实验引入了还原氧化石墨烯（RGO）和十八烷基三氯硅烷（C18H37SiCl3，OTS）作为界面修饰材料，研究不同界面修饰材料对BFO薄膜光伏器件结构和光伏性能的影响。结果发现，RGO既能增加器件的开路电压（Voc，从0.67 V到0.84 V），又能明显提高填充因子（FF，从0.664到0.965）和光电转换效率（PCE，从1.03到1.67），是比较理想的界面修饰材料；虽然OTS膜不能提高器件的FF和PCE，但在提高Voc（从0.67 V到1.15 V）上作用明显；既RGO和OTS修饰层对BFO薄膜光伏性能的改善具有不同的作用。

关键词: 铁酸铋, 氧化石墨烯, OTS, 界面修饰, 光伏效应

Abstract:

BiFeO3 (BFO) thin films were prepared by sol-gel method and the pure phase BFO crystals were obtained by a layer-by-layer annealing process. Reduced graphene oxide (RGO) and octadecyltrichlorosilane (C18H37SiCl3, OTS) were used as interfacial modifiers to study the effect of various interfacial materials on the structure and photovoltaic property of BFO film based photovoltaic devices. The results show that the RGO can increase the device open circuit voltage (Voc, from 0.67 V to 0.84 V), but also significantly improve the fill factor (FF, from 0.664 to 0.965) and the photoelectric conversion efficiency (PCE, from 1.03 to 1.67). Though the OTS film cannot improve the FF and PCE, it is effective in improving the Voc (from 0.67 V to 1.15 V). The RGO and OTS modified layers have different effects on the photovoltaic performance of the BFO film.

Key words: BiFeO3, graphene oxide, OTS, interface modification, photovoltaic effect