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Dissolvable photovoltaic cells on hydrogel

Li, Benxuan, Zhan, Shijie, Li, Zhe, Ming, Wenlong ORCID:, Amaratunga, Gehan A. J. and Hou, Bo ORCID: 2024. Dissolvable photovoltaic cells on hydrogel. APL Materials 12 (6) , 061102. 10.1063/5.0197820

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Solar energy is potentially the largest source of renewable energy for providing electrical power for human society. However, significant advances are required to make photovoltaic technologies have a low-carbon footprint in manufacture, be environmentally friendly at the end of their lives through recyclability, and be biodegradable. Here we report dissolvable organic photovoltaic devices based on poly(2-hydroxyethyl methacrylate), which show equal power conversion efficiency to their glass substrate-based counterparts. We use a novel method of including smectic liquid crystal (7-dioctyl[1]benzothieno[3,2- b][1]benzothiophene, C8-BTBT) as a crystal phase regulator in the heterojunction donor:acceptor polymer system to maintain the disposable organic solar cell efficiency without pre- or post-thermal annealing. The results show strong promise not only for more sustainable solar-cell fabrication but also as disposable and biocompatible solar cells for self-powered (energy harvesting) wearable and biomedical devices.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: American Institute of Physics
ISSN: 2166-532X
Funders: EPSRC
Date of First Compliant Deposit: 16 May 2024
Date of Acceptance: 6 May 2024
Last Modified: 29 Jun 2024 10:50

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