Internal Encapsulating Layer for Efficient, Stable Perovskite Solar Cells
Yue JIANG a, Dongdong XU a, Runsheng MAI a
a South China Normal University, South China Normal University, Panyu District, Guangzhou
Proceedings of International Online Conference on Hybrid Materials and Optoelectronic Devices (HYBRIDOE21)
Online, Spain, 2021 December 15th - 17th
Organizers: Jinwei Gao, Hua Yu, Dewei Zhao, Haizheng Zhong, Hairen Tan and Xueqing Xu
Oral, Yue JIANG, presentation 010
Publication date: 3rd December 2021

Over ten-year development of organic-inorganic perovskite solar cells (PSCs), the highest power conversion efficiency (PCE) has exceeded 25%, competitive with the silicon based solar cells. However, due to the intrinsic ionic lead-containing feature of organic-inorganic perovskite crystals, the stability against moisture/heat and the potential risk of lead leakage still limits its commercialization and long-term utilization in civilian circumstances. Generally, scholars use polymers as external encapsulating layer (EEL) or interface to solve these problems. However, the small quantity of dopant or the thin thickness of interface is not enough to guarantee their long-term protection against moisture/heat.

Inspired by the multi-level encapsulating method for electronic components in order to achieve a long-term stability of circuits, we propose to utilize the internal encapsulating layer (IEL) as a complement of EEL to improve the stability of perovskite films as well as the corresponding devices.

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