ABSTRACT

In this work the scalable Crystal Engineering approach was successfully applied to fabricate the CH3NH3PbI3 absorbing layer on low-temperature planar SnO2 under atmospheric conditions (fully out of glove-box). Photovoltaic characterization showed high-reproducible hysteresis-free planar perovskite solar cells with a maximum power conversion efficiency of 17.6%. The photophysical properties of the PSCs, evaluated by transient photovoltage and photocurrent analysis, showed the excellent capability of SnO2 to extract charge for perovskite. Non-encapsulated n-i-p planar solar cells indicated promising stability under atmospheric conditions, maintaining 90% of the initial efficiency for more than 1000 h. We demonstrate that the scalable air insensitive crystal engineering method is a promising approach for industrialization and fabrication of high efficiency, air-stable, and low-temperature planar perovskite solar cells with high reproducibility fabrication.

Authors:

Shiva Navazani, Narges Yaghoobi Nia, Mahmoud Zendehdel, Ali Shokuhfar, Aldo Di Carlo

https://doi.org/10.1016/j.solener.2020.05.084

Solar Energy Volume 206, August 2020, Pages 181-187

https://www.sciencedirect.com/science/article/abs/pii/S0038092X20305831