Efficient planar perovskite solar cells based on high-quality perovskite films with smooth surface and large crystal grains fabricated in ambient air conditions
Efficient planar perovskite solar cells based on high-quality perovskite films with smooth surface and large crystal grains fabricated in ambient air conditions
复制标题
基于在环境空气条件下制备的表面光滑、大晶粒的高质量钙钛矿薄膜的高效平面钙钛矿太阳能电池
DOI：
10.1016/j.solener.2017.07.039
复制
发表时间：
2017-10
期刊：
影响因子：
6.7
通讯作者：
Lan Zhang
中科院分区：
文献类型：
--
作者：
Zhang Lei;Zhang Xuezhen;Yu Yang;Xu Xiaoxia;Tang Jie;He Xin;Wu Jihuai;Lan Zhang
由于甲基铵组分的吸湿特性，在相对湿度约60- 80%的环境空气条件下制备高效钙钛矿太阳能电池仍然是一个很大的挑战。在潮湿空气条件下，采用典型的两步法和常用的前驱体溶液，只能得到表面形貌较差的网状PbI 2薄膜和多孔钙钛矿薄膜。由于PbI 2薄膜的形貌对钙钛矿薄膜的最终质量起着关键作用，因此制备高质量的PbI 2薄膜是第一个挑战。随后，另一个挑战是如何消除PbI 2薄膜转化为钙钛矿薄膜时潮湿空气的影响。为了克服这些困难，采用正丁胺添加剂制备了全覆盖、连续的PbI 2薄膜，然后采用低亲水性正丁醇溶剂和新型多循环短时浸渍反应，在手套箱中成功地将PbI 2薄膜转化为表面光滑、晶粒尺寸与一步反溶剂法制备的PbI 2薄膜相似的高质量钙钛矿薄膜。基于高质量钙钛矿薄膜的最佳性能器件实现了17.56%的平均功率转换效率（正向和反向扫描的平均值），具有轻微的滞后性和良好的再现性。
Due to the hygroscopic feature of methylammonium component, it is still a big challenge to prepare efficient perovskite solar cells in ambient air conditions with high relative humidity about 60–80%. In the humid air conditions, it can only obtain the network-like PbI2films and porous perovskite films with poor surface morphology when utilizing the typical two-step method and usually used precursor solution. Because of the key role of the morphology of PbI2films in determining the final quality of perovskite films, the first challege is to fabricate high-quality PbI2films. Later, another challege is how to eliminate the influence of moist air when converting PbI2films into perovskite films. For overcoming the challenges, a special additive ofn-butyl amine is used to prepare full coverage and continuous PbI2films, and then a low-hydrophilic n-butanol solvent and a novel multi-cycle short-time dipping reaction are used to successfully convert these PbI2films into high-quality perovskite films with smooth surface and large crystal grains similar as that of the ones prepared with one-step anti-solvent method in glove box. The best performance device based on the high-quality perovskite film achieves an average power conversion efficiency (average of the forward and reverse scans) of 17.56% with slight hysterisis and good reproducibility.
登录
查看更多内容
影响因子：
56.9
作者：
Lee, Michael M.;Teuscher, Joel;Snaith, Henry J.
通讯作者：
Snaith, Henry J.
影响因子：
9.5
作者：
Luo, Paifeng;Liu, Zhaofan;Lu, Yingwei
通讯作者：
Lu, Yingwei
影响因子：
3.7
作者：
Pockett, Adam;Eperon, Giles E.;Cameron, Petra J.
通讯作者：
Cameron, Petra J.
影响因子：
27.8
作者：
Zhibin Yang;Chu‐Chen Chueh;Fan Zuo;Jong H. Kim;Po-Wei Liang;A. Jen
通讯作者：
Zhibin Yang;Chu‐Chen Chueh;Fan Zuo;Jong H. Kim;Po-Wei Liang;A. Jen
影响因子：
17.1
作者：
Eperon, Giles E.;Habisreutinger, Severin N.;Snaith, Henry J.
通讯作者：
Snaith, Henry J.