[16p-A401-1~17] 12.5 Organic and hybrid solar cells

[16p-A401-14] Protective effect of single- and multi-layer gas barrier films formed by Cat-CVD for perovskite layers

〇Wenbo Cao¹, Peng Liu², Huynh Thi Cam Tu¹, Shahiduzzaman Md.², Tetsuya Taima², Keisuke Ohdaira¹ (1.JAIST, 2.Kanazawa Univ.)

Keywords:perovskite

The effect of the gas barrier film on the degradation rate of the perovskite film was investigated for the formation of monolayer SiNx and multilayer SiOxNy/SiNx gas barrier films by Cat-CVD to suppress the degradation of MAPbI3 under atmospheric conditions. The results of X-ray diffraction and reflection/transmission spectra show that the gas barrier film improves the stability of MAPbI3, since no PbI2 peak is observed even after 1000 h of exposure to the atmosphere. It was also confirmed that the smaller the H2 flow rate during film deposition, the higher the absorption rate after 1000 h of atmospheric exposure for both monolayer and multilayer than for other samples. This suggests that H radicals produced by H2 decomposition may affect MAPbI3.