Achieving 19% efficiency in nonfused ring electron acceptor solar cells via solubility control of donor and acceptor crystallisation
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"doi": "10.24435/materialscloud:w6-kf",
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"title": "Achieving 19% efficiency in nonfused ring electron acceptor solar cells via solubility control of donor and acceptor crystallisation",
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"keywords": [
"organic solar cells",
"nonfused ring electron acceptor",
"record efficiency",
"large-area device",
"experimental"
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"conceptrecid": "1881",
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"references": [
{
"type": "Preprint",
"comment": "Paper in which the method is described",
"citation": "Rui Zeng. et al. Achieving 19% efficiency in nonfused ring electron acceptor solar cells via solubility control of donor and acceptor crystallisation. (in preparation)"
}
],
"publication_date": "Apr 29, 2024, 10:17:05",
"license": "Creative Commons Attribution 4.0 International",
"id": "2163",
"description": "Nonfused ring electron acceptors (NFREAs) are interesting n-type near infrared (NIR) photoactive semiconductors with strong molecular absorption and easy synthetic route. However, the low backbone planarity and bulky substitution make NFREA less crystalline, which significantly retards charge transport and the formation of bicontinuous morphology in organic photovoltaic device. Donor and acceptor solubility in different solvents is studied, and the created solubility hysteresis can induce the formation of the highly crystalline donor polymer fibril to purify the NFREA phase, thus a better bicontinuous morphology with improved crystallinity. Based on these results, a general solubility hysteresis sequential condensation (SHSC) thin film fabrication methodology is established to produce highly uniform and smooth photoactive layer. The well-defined interpenetrating network morphology afforded a record efficiency of 19.02%, which is ~22% improvement comparing to conventional device fabrication. A high efficiency retention (Pr) value of 92.3% is achieved in 1 cm\u00b2 device (17.28% efficiency).",
"version": 2,
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"School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, Shanghai 200240, China."
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"edited_by": 1048
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"updated": "2024-09-25T17:04:04.512110+00:00"
}