Interface architecture between TiO2/perovskite, perovskite/hole transport layer, and perovskite grain boundary (Conference Presentation)

2016 ◽  
Author(s):  
Shuzi Hayase ◽  
Daisuke Hirotani ◽  
Masahiro Moriya ◽  
Yuhei Ogomi ◽  
Qing Shen ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer

7.5% n–i–p Sb2Se3 solar cells with CuSCN as a hole-transport layer

2019 ◽  
Vol 7 (16) ◽  
pp. 9665-9672 ◽  
Author(s):  
Kanghua Li ◽  
Siyu Wang ◽  
Chao Chen ◽  
Rokas Kondrotas ◽  
Manchen Hu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Grain Boundary ◽  
Surface Recombination ◽  
Hole Transport ◽  
Transport Layer ◽  
Back Surface ◽  
Hole Transport Layer

CuSCN suppresses the back surface recombination and induces grain boundary inversion through Cu diffusion to achieve 7.5% n–i–p Sb2Se3 solar cells.

scholarly journals Degradation mechanism of hybrid tin-based perovskite solar cells and the critical role of tin (IV) iodide

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Luis Lanzetta ◽  
Thomas Webb ◽  
Nourdine Zibouche ◽  
Xinxing Liang ◽  
Dong Ding ◽  
...  
Keyword(s):  
Degradation Mechanism ◽  
Critical Role ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Transport Layer ◽  
Environmental Stability ◽  
Hole Transport Layer ◽  
Future Design ◽  
Cyclic Degradation ◽  
Stability Issues

AbstractTin perovskites have emerged as promising alternatives to toxic lead perovskites in next-generation photovoltaics, but their poor environmental stability remains an obstacle towards more competitive performances. Therefore, a full understanding of their decomposition processes is needed to address these stability issues. Herein, we elucidate the degradation mechanism of 2D/3D tin perovskite films based on (PEA)0.2(FA)0.8SnI3 (where PEA is phenylethylammonium and FA is formamidinium). We show that SnI4, a product of the oxygen-induced degradation of tin perovskite, quickly evolves into iodine via the combined action of moisture and oxygen. We identify iodine as a highly aggressive species that can further oxidise the perovskite to more SnI4, establishing a cyclic degradation mechanism. Perovskite stability is then observed to strongly depend on the hole transport layer chosen as the substrate, which is exploited to tackle film degradation. These key insights will enable the future design and optimisation of stable tin-based perovskite optoelectronics.

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