Fully Air-Bladed High-Efficiency Perovskite Photovoltaics

By Jie Ding, Qiwei Han, Qianqing Ge, D. Xue, Jingyuan Ma, Boya Zhao, Yao Chen, Jie Liu, David B. Mitzi, Jinsong Hu. Joule, 2019

133 citations recorded by the source corpus.

Summary Perovskite photovoltaics has achieved rapid development largely due to the spin-coating technique with antisolvent steps at laboratory scale. However, the spin-coating/antisolvent technique limits the device dimension due to film uniformity issues. Up to now, it has been challenging to obtain perovskite devices with high efficiency (e.g., >20%) using scalable methods without antisolvent steps. Herein, an air-blading process is demonstrated to assemble the entire perovskite devices completely free from the spin-coating techniques. This method can coat perovskite precursor on substrates and simultaneously induce nucleation in perovskite intermediate films without any antisolvent steps, leading to highly uniform films. The fully air-bladed perovskite photovoltaics shows the best efficiency (reverse scanning) of >20% for 0.09 cm2 illumination-exposure area and the best efficiency of >19% for 1.0 cm2 illumination-exposure area with high reproducibility (stabilized efficiencies are 19.3% and 18.2%, respectively). Such an air-blading process offers a wide processing window for versatile high-performance perovskite optoelectronics toward large-scale production.

Subfields: Electrical and Electronic Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/d1ead9c4b61024d457089f807a6722698c5904e8