Journal
ACS APPLIED ENERGY MATERIALS
Volume 3, Issue 8, Pages 7318-7324Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.0c00540
Keywords
perovskite solar cells; flexible; triple cation; gamma-ray; irradiation
Funding
- National Natural Science Foundation of China [11875229, 51673214]
- National Key Research and Development Program of China [2017YFA0206600]
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Flexible solar cells are promising for space applications due to their unique properties including lightweight and flexibility. In particular, flexible perovskite solar cells (f-PSCs) with high efficiencies have a much stronger competitiveness, but study about the radiation tolerance of f-PSCs is still absent. Herein, the radiation tolerance of methylammonium (MA)/formamidinium (FA)/cesium (Cs)-based triple cation f-PSCs under gamma-ray was investigated systematically, with a planar heterojunction structure of PEN/ITO/SnO2/perovskite/spiro-OMeTAD/Ag. The results show that the photovoltaic performance of the cells experienced an obvious deterioration after gamma-ray irradiation, especially the short-circuit current density. It is mainly attributed to the decreased transparency of the flexible substrate, namely, poly(ethylene naphthalate) (PEN), and the decomposition of perovskite films under gamma-ray irradiation. In spite of the performance degradation, the radiation tolerance of f-PSCs was still much better than that of rigid counterparts. It suggests that f-PSCs are more suitable for space application, showing better prospects.
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