Vacuum Deposited Triple-Cation Mixed-Halide Perovskite Solar Cells
Vacuum Deposited Triple-Cation Mixed-Halide Perovskite Solar Cells
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DOI：
10.1002/aenm.201703506
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发表时间：
2018-05-15
影响因子：
27.8
通讯作者：
Bolink, Henk J.
中科院分区：
文献类型：
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作者：
Gil-Escrig, Lidon;Momblona, Cristina;Bolink, Henk J.
混合卤化铅钙钛矿是未来光伏应用有前途的材料。它们的光谱响应可以通过控制卤化物成分轻松调节，而它们的稳定性很大程度上取决于薄膜形态和所用有机阳离子的类型。混合阳离子和混合卤化物系统已报道出最高效、最稳定的钙钛矿太阳能电池，到目前为止，它们完全是通过溶液加工制备的。这可能是由于与多个热源真空沉积相关的技术困难，需要在成膜过程中对每种前驱体的沉积速率进行高水平的控制。在本报告中，首次使用多源（3和4）热真空沉积来制备多阳离子/阴离子钙钛矿化合物。这些薄膜吸收器被应用到使用掺杂有机半导体的全真空沉积太阳能电池中。获得了16%的最大功率转换效率，具有良好的器件稳定性。强调了控制薄膜形态的重要性，当这些化合物进行真空处理时，薄膜形态的控制有很大不同。提出了改善全真空处理的多阳离子/阴离子钙钛矿太阳能电池的形态和性能的途径。
Hybrid lead halide perovskites are promising materials for future photovoltaics applications. Their spectral response can be readily tuned by controlling the halide composition, while their stability is strongly dependent on the film morphology and on the type of organic cation used. Mixed cation and mixed halide systems have led to the most efficient and stable perovskite solar cells reported, so far they are prepared exclusively by solutionprocessing. This might be due to the technical difficulties associated with the vacuum deposition from multiple thermal sources, requiring a high level of control over the deposition rate of each precursor during the film formation. In this report, thermal vacuum deposition with multiple sources (3 and 4) is used to prepare for the first time, multications/anions perovskite compounds. These thin-film absorbers are implemented into fully vacuum deposited solar cells using doped organic semiconductors. A maximum power conversion efficiency of 16% is obtained, with promising device stability. The importance of the control over the film morphology is highlighted, which differs substantially when these compounds are vacuum processed. Avenues to improve the morphology and hence the performance of fully vacuum processed multications/anions perovskite solar cells are proposed.