钙钛矿(结构)
能量转换效率
材料科学
图层(电子)
制作
电极
光活性层
化学工程
电子迁移率
纳米技术
光电子学
沉积(地质)
化学
聚合物太阳能电池
物理化学
生物
工程类
医学
病理
古生物学
替代医学
沉积物
作者
Saba Gharibzadeh,Bahram Abdollahi Nejand,Ahmad Moshaii,Nasim Mohammadian,Abdolali Alizadeh,Rahele Mohammadpour,Vahid Ahmadi,Abdolali Alizadeh
出处
期刊:Chemsuschem
[Wiley]
日期:2016-06-30
卷期号:9 (15): 1929-1937
被引量:64
标识
DOI:10.1002/cssc.201600132
摘要
Abstract A simple and practical approach is introduced for the deposition of CuI as an inexpensive inorganic hole‐transport material (HTM) for the fabrication of low cost perovskite solar cells (PSCs) by gas–solid phase transformation of Cu to CuI. The method provides a uniform and well‐controlled CuI layer with large grains and good compactness that prevents the direct connection between the contact electrodes. Solar cells prepared with CuI as the HTM with Au electrodes displays an exceptionally high short‐circuit current density of 32 mA cm −2 , owing to an interfacial species formed between the perovskite and the Cu resulting in a long wavelength contribution to the incident photon‐to‐electron conversion efficiency (IPCE), and an overall power conversion efficiency (PCE) of 7.4 %. The growth of crystalline and uniform CuI on a low roughness perovskite layer leads to remarkably high charge extraction in the cells, which originates from the high hole mobility of CuI in addition to a large number of contact points between CuI and the perovskite layer. In addition, the solvent‐free method has no damaging side effect on the perovskite layer, which makes it an appropriate method for large scale applications of CuI in perovskite solar cells.
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