Affiliation:
1. MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin Heilongjiang 150001 China
2. School of Materials Science and Engineering Harbin Institute of Technology Harbin Heilongjiang 150001 China
Abstract
AbstractDespite 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) (C5NH5)4(C3N2H5)2Zn3(H8P4Mo6O31)2·2H2O (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.
Funder
National Natural Science Foundation of China
China Postdoctoral Science Foundation
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
2 articles.
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