Solution processing of hybrid perovskite semiconductors is a very promising approach to fabricate cost-effective electronic and optoelectronic devices. However, the challenge of this approach lies in overcoming the controllability of perovskite film morphology and the reproducibility of device efficiency.
Peter Müller-Buschbaum et al. of the Technical University of Munich report a facile and practical aging treatment (AT) strategy to regulate perovskite crystal growth to produce sufficiently high-quality perovskite films with improved uniformity and full coverage morphology. . Compared with the reference, the resulting AT films exhibit fewer defects, faster carrier transfer/extraction, and suppressed nonradiative recombination.
AT-devices achieved improvements in device repeatability, operational stability and photovoltaic performance, with an average efficiency increase of 16%. It also demonstrates the feasibility and feasibility of the AT strategy in optimizing the film morphology and device performance of other perovskite components, including MAPbI3, (MAPbBr3)15(FAPbI3)85, and Cs0.05(MAPbBr3)0.17(FAPbI3)0.83 Scalability. This method opens up an effective way to improve the quality of perovskite films and photovoltaic devices in a scalable and reproducible manner.
Zou, Y., Bai, X., Kahmann, S., Dai, L., Yuan, S., Yin, S., Heger, J. E., Schwartzkopf, M., Roth, S. V., Chen, C.-C., Zhang, J., Stranks, S. D., Friend, R. H., Müller-Buschbaum, P., A Practical Approach Towards Highly Reproducible And High-Quality Perovskite Films Based on An Aging Treatment. Adv. Mater. 2023, 2307024.
https://doi.org/10.1002/adma.202307024
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