Making Room for Growing Oriented FASnI 3 with Large Grains via Cold Precursor Solution

Danyu Cui, Xiao Liu, Tianhao Wu, Xuesong Lin, Xinhui Luo, Yongzhen Wu, Hiroshi Segawa, Xudong Yang, Yiqiang Zhang, Yanbo Wang, Liyuan Han

Adv. Fun. Mat. Volume31, Issue25, June 16, 2021, 2100931

doi.org/10.1002/adfm.202100931

Description:

In this paper, the researchers fabricated tin-based perovskite solar cells with improved performance thanks to a cooled (0°) precursor solution. The latter leads to larger grain sizes which enhance the charge carrier lifetime (-> enhanced Voc) and reduces the oxygen penetration (-> longer lifetime) and subsequent reaction in the film. Paios was used to perform TPV and TPC experiments in order to demonstrate the longer charge carrier lifetime and the enhanced charge extraction properties of the 0° -device, respectively.