Tailored Colloidal Shapes in Precursor Solutions for Efficient Blade‐Coated Perovskite Solar Modules
Abstract
Abstract Metal halide perovskite solar cells (PSCs) have emerged as one of the most promising candidates for next‐generation photovoltaic technologies. However, perovskite films deposited by blade‐coating usually exhibit inferior film morphology compared to those fabricated by spin‐coating, which hinders the power conversion efficiency (PCE) and stability of the scalable perovskite solar modules (PSMs). Herein, ellipsoidal colloids are tailored in the perovskite precursor solution by incorporating perovskite colloids and polymer additives. Compared to unregulated spherical colloids, the ellipsoidal colloids demonstrate more oriented packing during the blade‐coating process, which is due to the anisotropic driven force from the fluidic flow in the meniscus. As a result of the improved film morphology, the regulated PSCs and PSMs achieve superior PCE of 24.31% and 21.67% (21.37% certified), respectively, for aperture areas of 0.09 and 13.94 cm 2 , and 89% initial PCE after 600 h continuous operation.
Article Details
Authors (12)
Yongrui Yang
Beijing National Laboratory for Molecular Science CAS Key Laboratory of Green Printing Institute of Chemistry Chinese Academy of Sciences Beijing China
Jingjing Wu
Kun Zhang
Yang Wang
Jie Gao
State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials
Mengmeng Guo
Fanyi Min
Department of Chemistry Tsinghua University Beijing China
Yumeng Wang
Key Laboratory of Multi-Cell Systems, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences
Lutong Guo
Beijing National Laboratory for Molecular Science CAS Key Laboratory of Green Printing Institute of Chemistry Chinese Academy of Sciences Beijing China
Yu Chen
Yali Qiao
Yanlin Song