Stable and Lead-Safe Polyphenol-Encapsulated Perovskite Solar Cells.

Autor: Dipta SS; School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, New South Wales, 2052, Australia., Christofferson AJ; School of Science, STEM College, RMIT University, Melbourne, Victoria, 2476, Australia., Kumar PV; School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia., Kundi V; School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia., Hanif M; School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, New South Wales, 2052, Australia., Tang J; School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia., Flores N; School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, New South Wales, 2006, Australia., Kalantar-Zadeh K; School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia.; School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, New South Wales, 2006, Australia., Uddin A; School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, New South Wales, 2052, Australia., Rahim MA; School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia.; School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, New South Wales, 2006, Australia.; Department of Chemical and Biological Engineering, Monash University, Clayton, Victoria, 3800, Australia.
Jazyk: angličtina
Zdroj: Advanced science (Weinheim, Baden-Wurttemberg, Germany) [Adv Sci (Weinh)] 2024 Aug; Vol. 11 (31), pp. e2403057. Date of Electronic Publication: 2024 Jun 18.
DOI: 10.1002/advs.202403057
Abstrakt: 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.
(© 2024 The Author(s). Advanced Science published by Wiley‐VCH GmbH.)
Databáze: MEDLINE
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