物理化学学报 >> 2016, Vol. 32 >> Issue (5): 1207-1213.doi: 10.3866/PKU.WHXB201602241

研究论文 上一篇    下一篇

绝缘氧化物包覆对钙钛矿太阳电池性能及界面电荷复合动力学的影响

周立1,朱俊2,*(),徐亚峰2,邵志鹏2,张旭辉2,叶加久2,黄阳2,张昌能2,戴松元2,3,*   

  1. 1 安徽大学物理与材料科学学院,合肥230601
    2 中国科学院合肥物质科学研究院应用技术研究所,合肥230031
    3 华北电力大学新型薄膜太阳电池北京市重点实验室,北京102206
  • 收稿日期:2015-12-11 发布日期:2016-05-07
  • 通讯作者: 朱俊,戴松元 E-mail:zhujzhu@gmail.com
  • 基金资助:
    国家高技术研究发展计划(863)(2015AA050602);国家自然科学基金(21403247)

Influence of Insulating Oxide Coatings on the Performance of Perovskite Solar Cells and the Interface Charge Recombination Dynamics

Li ZHOU1,Jun ZHU2,*(),Ya-Feng XU2,Zhi-Peng SHAO2,Xu-Hui ZHANG2,Jia-Jiu YE2,Yang HUANG2,Chang-Neng ZHANG2,Song-Yuan DAI2,3,*   

  1. 1 School of Physics and Materials Science, Anhui University, Hefei 230601, P. R. China
    2 Institute of Applied Technology, Hefei Institutes of Physical Science, Chinese Academy of Science, Hefei 230031, P. R. China
    3 Beijing Key Laboratory of Novel Thin Film Solar Cells, North China Electric Power University, Beijing 102206, P. R. China
  • Received:2015-12-11 Published:2016-05-07
  • Contact: Jun ZHU,Song-Yuan DAI E-mail:zhujzhu@gmail.com
  • Supported by:
    the National High Technology Research and Development Program of China (863)(2015AA050602);National Natural Science Foundation of China(21403247)

摘要:

采用浸渍法对钙钛矿太阳电池的介孔层TiO2纳米颗粒进行了SiO2、ZrO2、Al2O3几种绝缘氧化物包覆,研究了其对电池光伏性能以及界面电荷复合动力学的影响。结果表明, SiO2包覆之后,电池的填充因子(FF)从67.6%提高到72.3%,光电转换效率提升到13.7%, ZrO2和Al2O3包覆导致电池开路电压提升约50mV,但是短路电流(Jsc)和填充因子略有下降。采用纳秒时间尺度的瞬态吸收光谱技术,从时间分辨的角度分析了钙钛矿电池界面的电子和空穴的复合寿命,对电池性能的变化给出了合理的解释。

关键词: 钙钛矿太阳电池, 复合寿命, 瞬态吸收, 表面包覆, 金属氧化物

Abstract:

Insulating oxides of SiO2, ZrO2, and Al2O3 were coated using a dipping method on the surface of mesoporous TiO2 nanoparticles for perovskite solar cells. The effects of the insulating oxide coatings on the performance of the perovskite solar cells and the interface charge recombination dynamics were investigated in detail. The efficiency of devices after SiO2 coating improved by 13.7% due to their FF (fill factor) increasing from 67.6% to 72.3%. However, the devices with ZrO2 and Al2O3 coatings exhibited an increase in Voc of up to 50 mV and a decrease in Jsc and FF. Transient absorption spectroscopy on a timescale from nanoseconds to milliseconds was performed to study the interface recombination lifetime between electrons and holes and the changes of the device performances are discussed.

Key words: Perovskite solar cell, Recombination lifetime, Transient absorption, Surface coating, Metal oxide

MSC2000: 

  • O646