Planar Heterojunction Perovskite Solar Cells via Vapor-Assisted Solution Process
Planar Heterojunction Perovskite Solar Cells via Vapor-Assisted Solution Process
复制标题
DOI：
10.1021/ja411509g
复制
发表时间：
2014-01-15
影响因子：
15
通讯作者：
Yang, Yang
中科院分区：
文献类型：
--
作者：
Chen, Qi;Zhou, Huanping;Yang, Yang
混合有机/无机钙钛矿（例如，CH_3NH_3PbI_3）作为光吸收剂在第三代光致发光领域具有广阔的应用前景。在这里，我们展示了一个低温蒸汽辅助溶液过程，以构建多晶钙钛矿薄膜的全表面覆盖，小的表面粗糙度，和晶粒尺寸达到微米级。基于所制备的薄膜的太阳能电池实现了12.1%的高功率转换效率，是迄今为止基于具有平面异质结结构的CH 3 NH3 PbI 3的最高效率。该方法为钙钛矿薄膜的制备提供了一种简单的方法，并为薄膜和器件的高再现性铺平了道路。讨论了钙钛矿薄膜生长的动力学和热力学参数。
Hybrid organic/inorganic perovskites (e.g., CH3NH3PbI3) as light absorbers are promising players in the field of third-generation photovoltaics. Here we demonstrate a low-temperature vapor-assisted solution process to construct polycrystalline perovskite thin films with full surface coverage, small surface roughness, and grain size up to microscale. Solar cells based on the as-prepared films achieve high power conversion efficiency of 12.1%, so far the highest efficiency based on CH3NH3PbI3 with the planar heterojunction configuration. This method provides a simple approach to perovskite film preparation and paves the way for high reproducibility of films and devices. The underlying kinetic and thermodynamic parameters regarding the perovskite film growth are discussed as well.