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首页> 外文期刊>Advanced Functional Materials >Effect of Annealing Temperature on Film Morphology of Organic-Inorganic Hybrid Pervoskite Solid-State Solar Cells
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Effect of Annealing Temperature on Film Morphology of Organic-Inorganic Hybrid Pervoskite Solid-State Solar Cells

机译：退火温度对有机-无机杂化钙钛矿固态太阳能电池薄膜形貌的影响

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摘要

Organic-inorganic hybrid perovskites have attracted attention as successful light harvesting materials for mesoscopic solid-state solar cells and led to record breaking efficiencies. The photovoltaic performance of these devices is greatly dependent on the film morphology, which in turn is dependent on the deposition techniques and subsequent treatments employed. In this work the perovskite film is deposited by spin-coating a precursor solution of PbCl_2 and CH_3NH_3I (1 to 3 molar ratio) in dimethylformamide. Here, the role of the temperature used in the annealing process required to convert the as deposited solution into the perovskite material is investigated. It is found that the conversion requires sufficiently high temperatures to ensure the vaporization of solvent and the crystallization of the perovskite material. However, increasing the annealing temperature too high leads to the additional formation of Pbl_2, which is detrimental to the photovoltaic performance. Furthermore, the effect of the annealing temperature on the film formation, morphology, and composition is examined and correlated with the photovoltaic performance and device working mechanisms.
机译：作为介观固态太阳能电池成功的光收集材料，有机-无机杂化钙钛矿引起了人们的关注，并创造了破纪录的效率。这些器件的光电性能在很大程度上取决于膜的形态，而膜的形态又取决于所采用的沉积技术和后续处理。在这项工作中，通过旋涂PbCl_2和CH_3NH_3I（摩尔比为1-3）的二甲基甲酰胺溶液来沉积钙钛矿膜。在这里，研究了将退火溶液转化为钙钛矿材料所需的退火过程中温度的作用。发现转化需要足够高的温度以确保溶剂的汽化和钙钛矿材料的结晶。但是，将退火温度提高得太高会导致另外形成Pbl_2，这对光电性能有害。此外，检查了退火温度对膜形成，形态和组成的影响，并将其与光伏性能和器件工作机理相关联。

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  • 来源
    《Advanced Functional Materials》 |2014年第21期|3250-3258|共9页
  • 作者

    Amalie Dualeh; Nicolas Tetreault; Thomas Moehl; Peng Gao; Mohammad Khaja Nazeeruddin; Michael Graetzel;

  • 作者单位

    Laboratory of Photonics and Interfaces Institute of Chemical Sciences and Engineering Ecole Polytechnique Federale de Lausanne Station 6, 1015 Lausanne, Switzerland;

    Laboratory of Photonics and Interfaces Institute of Chemical Sciences and Engineering Ecole Polytechnique Federale de Lausanne Station 6, 1015 Lausanne, Switzerland;

    Laboratory of Photonics and Interfaces Institute of Chemical Sciences and Engineering Ecole Polytechnique Federale de Lausanne Station 6, 1015 Lausanne, Switzerland;

    Laboratory of Photonics and Interfaces Institute of Chemical Sciences and Engineering Ecole Polytechnique Federale de Lausanne Station 6, 1015 Lausanne, Switzerland;

    Laboratory of Photonics and Interfaces Institute of Chemical Sciences and Engineering Ecole Polytechnique Federale de Lausanne Station 6, 1015 Lausanne, Switzerland;

    Laboratory of Photonics and Interfaces Institute of Chemical Sciences and Engineering Ecole Polytechnique Federale de Lausanne Station 6, 1015 Lausanne, Switzerland;

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