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Stable and Lead‐Safe Polyphenol‐Encapsulated Perovskite Solar Cells

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Title: Stable and Lead‐Safe Polyphenol‐Encapsulated Perovskite Solar Cells
Authors: Shahriyar Safat Dipta, Andrew J. Christofferson, Priyank V. Kumar, Varun Kundi, Muhammad Hanif, Jianbo Tang, Nieves Flores, Kourosh Kalantar‐Zadeh, Ashraf Uddin, Md. Arifur Rahim
Source: Advanced Science, Vol 11, Iss 31, Pp n/a-n/a (2024)
Publisher Information: Wiley, 2024.
Publication Year: 2024
Collection: LCC:Science
Subject Terms: encapsulation, lead toxicity, Perovskite solar cells, polyphenol coating, stability, Science
More Details: Abstract Lead (Pb) halide perovskite solar cells (PSCs) exhibit impressive power conversion efficiencies close to those of their silicon counterparts. However, they suffer from moisture instability and Pb safety concerns. Previous studies have endeavoured to address these issues independently, yielding minimal advancements. Here, a general nanoencapsulation platform using natural polyphenols is reported for Pb‐halide PSCs that simultaneously addresses both challenges. The polyphenol‐based encapsulant is solution‐processable, inexpensive (≈1.6 USD m−2), and requires only 5 min for the entire process, highlighting its potential scalability. The encapsulated devices with a power conversion efficiency of 20.7% retained up to 80% of their peak performance for 2000 h and up to 70% for 7000 h. Under simulated rainfall conditions, the encapsulant rich in catechol groups captures the Pb ions released from the degraded perovskites via coordination, keeping the Pb levels within the safe drinking water threshold of 15 ppb.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 2198-3844
Relation: https://doaj.org/toc/2198-3844
DOI: 10.1002/advs.202403057
Access URL: https://doaj.org/article/e7ea3be7103e45ecaa0e68032f974c30
Accession Number: edsdoj.7ea3be7103e45ecaa0e68032f974c30
Database: Directory of Open Access Journals
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  Data: Stable and Lead‐Safe Polyphenol‐Encapsulated Perovskite Solar Cells
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  Data: <searchLink fieldCode="AR" term="%22Shahriyar+Safat+Dipta%22">Shahriyar Safat Dipta</searchLink><br /><searchLink fieldCode="AR" term="%22Andrew+J%2E+Christofferson%22">Andrew J. Christofferson</searchLink><br /><searchLink fieldCode="AR" term="%22Priyank+V%2E+Kumar%22">Priyank V. Kumar</searchLink><br /><searchLink fieldCode="AR" term="%22Varun+Kundi%22">Varun Kundi</searchLink><br /><searchLink fieldCode="AR" term="%22Muhammad+Hanif%22">Muhammad Hanif</searchLink><br /><searchLink fieldCode="AR" term="%22Jianbo+Tang%22">Jianbo Tang</searchLink><br /><searchLink fieldCode="AR" term="%22Nieves+Flores%22">Nieves Flores</searchLink><br /><searchLink fieldCode="AR" term="%22Kourosh+Kalantar‐Zadeh%22">Kourosh Kalantar‐Zadeh</searchLink><br /><searchLink fieldCode="AR" term="%22Ashraf+Uddin%22">Ashraf Uddin</searchLink><br /><searchLink fieldCode="AR" term="%22Md%2E+Arifur+Rahim%22">Md. Arifur Rahim</searchLink>
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  Data: Advanced Science, Vol 11, Iss 31, Pp n/a-n/a (2024)
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  Data: Abstract Lead (Pb) halide perovskite solar cells (PSCs) exhibit impressive power conversion efficiencies close to those of their silicon counterparts. However, they suffer from moisture instability and Pb safety concerns. Previous studies have endeavoured to address these issues independently, yielding minimal advancements. Here, a general nanoencapsulation platform using natural polyphenols is reported for Pb‐halide PSCs that simultaneously addresses both challenges. The polyphenol‐based encapsulant is solution‐processable, inexpensive (≈1.6 USD m−2), and requires only 5 min for the entire process, highlighting its potential scalability. The encapsulated devices with a power conversion efficiency of 20.7% retained up to 80% of their peak performance for 2000 h and up to 70% for 7000 h. Under simulated rainfall conditions, the encapsulant rich in catechol groups captures the Pb ions released from the degraded perovskites via coordination, keeping the Pb levels within the safe drinking water threshold of 15 ppb.
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