Uniform, Stable, and Efficient Planar-Heterojunction Perovskite Solar Cells by Facile Low-Pressure Chemical Vapor Deposition under Fully Open-Air Conditions
Uniform, Stable, and Efficient Planar-Heterojunction Perovskite Solar Cells by Facile Low-Pressure Chemical Vapor Deposition under Fully Open-Air Conditions
复制标题
DOI：
10.1021/am5077588
复制
发表时间：
2015-02-04
影响因子：
9.5
通讯作者：
Lu, Yingwei
中科院分区：
文献类型：
--
作者：
Luo, Paifeng;Liu, Zhaofan;Lu, Yingwei
近年来，混合钙钛矿太阳能电池因其制备工艺简单、效率高而受到广泛关注。本文首次开发了一种简便的低压化学气相沉积(LPCVD)技术来制备PSCs，该技术可以有效地降低过快的插层反应速度，并容易克服溶液过程中的堵塞问题。结果表明，制备的均匀钙钛矿薄膜结晶良好，吸附能力强，载流子扩散长度长。更引人注目的是，LPCVD制备的CH3NH3PbI3吸收材料即使在激光照射和高温条件下也表现出优异的防潮性能，这表明我们的专利方法非常适合未来新一代光伏器件的低成本、非真空生产。最后，在完全露天条件下成功实现了12.73%的高效率。据我们所知，这是第一次报道在60%以上的高湿度下高效的PSCS。
Recently, hybrid perovskite solar cells (PSCs) have attracted extensive attention due to their high efficiency and simple preparing process. Herein, a facile low-pressure chemical vapor deposition (LPCVD) technology is first developed to fabricate PSCs, which can effectively reduce the over-rapid intercalating reaction rate and easily overcome this blocking issue during the solution process. As a result, the prepared uniform perovskite films exhibit good crystallization, strong absorption, and long carrier diffusion length. More strikingly, CH3NH3PbI3 absorbers by LPCVD demonstrate excellent moisture-resistant feature even under laser illumination and high-temperature conditions, which indicates that our proprietary method is very suitable for the future low-cost, nonvacuum production of the new generation photovoltaic devices. Finally, high efficiency of 12.73% is successfully achieved under fully open-air conditions. To the best of our knowledge, this is the first report of efficient PSCs with such a high humidity above 60%.