材料科学
结晶
多金属氧酸盐
泄漏(经济)
金属有机骨架
钙钛矿太阳能电池
太阳能电池
钙钛矿(结构)
金属
铅(地质)
纳米技术
化学工程
无机化学
光电子学
冶金
化学
催化作用
有机化学
经济
吸附
宏观经济学
工程类
地质学
地貌学
作者
Yayu Dong,Jian Zhang,Wei Wang,Boyuan Hu,Debin Xia,Kaifeng Lin,Lin Geng,Yulin Yang
出处
期刊:Small
[Wiley]
日期:2023-05-14
卷期号:19 (29)
被引量:16
标识
DOI:10.1002/smll.202301824
摘要
Despite the unprecedented progress in lead-based perovskite solar cells (PSCs), the toxicity and leakage of lead from degraded PSCs triggered by deep-level defects and poor crystallization quality increase environmental risk and become a critical challenge for eco-friendly PSCs. Here, a novel 2D polyoxometalate (POM)-based metal-organic framework (MOF) (C5 NH5 )4 (C3 N2 H5 )2 Zn3 (H8 P4 Mo6 O31 )2 ·2H2 O (POMOF) is ingeniously devised to address these issues. Note that the integration of POM endows POMOF with great advantages of electrical conductivity and charge mobility. Ordered POMOF induces the crystallization of high-quality perovskite film and eliminates lead-based defects to improve internal stability. The resultant PSCs achieve a superior power conversion efficiency (23.3%) accompanied by improved stability that maintains ≈90% of its original efficiency after 1600 h. Meanwhile, POMOF with phosphate groups effectively prevents lead leakage through in situ chemical anchoring and adsorption methods to reduce environmental risk. This work provides an effective strategy to minimize lead-based defects and leakage in sustainable PSCs through multi-functional POM-based MOF material.
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