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The penetration of moisture/O 2 into the perovskite solar cells (PSCs) causes shifts of iodine distribution within the perovskite layer and facilitates diffusion of iodine towards the hole transporting layer. Interestingly, these negative effects can be prevented by a simple encapsulation process and further prolong the stability of PSCs.
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Ginting et al. (2017) studied this question.
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