Achieving 19% efficiency in nonfused ring electron acceptor solar cells via solubility control of donor and acceptor crystallisation
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"familyname": "Xue",
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"familyname": "Lu",
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"Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA."
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"Polymer Science and Engineering Department, University of Massachusetts, Amherst, MA01003, USA."
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"familyname": "Jing",
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"familyname": "Zhang",
"givennames": "Yongming",
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"State Key Laboratory of Fluorinated Functional Membrane Materials and Dongyue Future Hydrogen Energy Materials Company, Zibo City, Shandong 256401, China.",
"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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"familyname": "Bo",
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"Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China."
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"familyname": "Liu",
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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.",
"Suzhou Laboratory, Suzhou 215100, China."
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"title": "Achieving 19% efficiency in nonfused ring electron acceptor solar cells via solubility control of donor and acceptor crystallisation",
"license": "Creative Commons Attribution 4.0 International",
"mcid": "2024.67",
"doi": "10.24435/materialscloud:w6-kf",
"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).",
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"publication_date": "Apr 29, 2024, 10:17:05",
"references": [
{
"type": "Preprint",
"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)",
"comment": "Paper in which the method is described"
}
],
"keywords": [
"organic solar cells",
"nonfused ring electron acceptor",
"record efficiency",
"large-area device",
"experimental"
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