高等学校化学学报 ›› 2015, Vol. 36 ›› Issue (4): 595-607.doi: 10.7503/cjcu20140927

• 综合评述 • 上一篇    下一篇

钙钛矿太阳电池的工作机理及性能的主要影响因素

钱柳, 丁黎明()   

  1. 国家纳米科学中心, 北京100190
  • 收稿日期:2014-10-17 出版日期:2015-04-10 发布日期:2015-03-27
  • 作者简介:联系人简介: 丁黎明, 男, 博士, 研究员, 博士生导师, 主要从事钙钛矿太阳电池和体异质结太阳电池研究. E-mail: ding@nanoctr.cn
  • 基金资助:
    中国科学院“百人计划”和国家自然科学基金(批准号: 21374025, U1401244)资助

Perovskite Solar Cells: Work Mechanism and Major Factors Affecting Their Performances

QIAN Liu, DING Liming*()   

  1. National Center for Nanoscience and Technology, Beijing 100190, China
  • Received:2014-10-17 Online:2015-04-10 Published:2015-03-27
  • Contact: DING Liming E-mail:ding@nanoctr.cn
  • Supported by:
    † Supported by the 100 Talents Program, the Chinese Academy of Sciences and the National Natural Science Foundation of China(Nos.21374025, U1401244)

摘要:

本文综合评述了钙钛矿太阳电池的重要研究成果, 解释了其工作机理并总结了影响电池性能的关键因素: 钙钛矿化学组成、 结晶与形貌、 传输层、 电极和体异质结等. 对钙钛矿太阳电池的未来发展进行了展望.

关键词: 钙钛矿太阳电池, 组成, 结晶, 形貌, 传输层, 电极, 体异质结

Abstract:

Hybrid organic-inorganic perovskites were first introduced to photovoltaic community in 2009. In subsequent years, the power conversion efficiency has increased from 3.8% to ~20%, leaving dye-sensitized solar cells and bulk-heterojunction solar cells far behind. “Perovskite” is a crystal possessing the same crystal structure as calcium titanate, namely, ABX3. Perovskites have unique properties, like broad absorption spectra, high absorption coefficient, ambipolar charge transport, long exciton lifetime and very low binding energy of exciton. Currently, the architecture of perovskite solar cells has been simplified from meso-structured solar cells to planar-heterojunction solar cells, getting closer to the low-cost, high-efficiency target for practical application. Many innovative researches are pushing the application of this new photovoltaic material to the climax. This review summarizes the working mechanism of perovskite solar cells and expounds several key factors affecting device performance, i.e. components, crystallization and morphology, transport layers, electrode materials and planted bulk-heterojunction. However, we should note that perovskites have some drawbacks impeding its commercialization. Perovskites are sensitive to oxygen and water vapor, making the solar cells unstable in the ambient; it is challenging to prepare large films because the morphology of perovskite film is difficult to control; the use of the toxic metal, lead, will also undermine the credit earned by their outstanding photovoltaic performance. It is very important for us to understand those mechanism and factors affecting device performance, and to find approaches to deal with instability, toxicity, and bad morphology.

Key words: Perovskite solar cell, Component, Crystallization, Morphology, Transport layer, Electrode, Bulk-heterojunction

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