Quantifying Quasi-Fermi Level Splitting and Open-Circuit Voltage Losses in Highly Efficient Nonfullerene Organic Solar Cells
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Phuong, Le Quang | - |
dc.contributor.author | Hosseini, Seyed Mehrdad | - |
dc.contributor.author | Sandberg, Oskar J. | - |
dc.contributor.author | Zou, Yingping | - |
dc.contributor.author | Woo, Han Young | - |
dc.contributor.author | Neher, Dieter | - |
dc.contributor.author | Shoaee, Safa | - |
dc.date.accessioned | 2022-03-05T04:40:55Z | - |
dc.date.available | 2022-03-05T04:40:55Z | - |
dc.date.created | 2022-03-02 | - |
dc.date.issued | 2021-01 | - |
dc.identifier.issn | 2367-198X | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/137821 | - |
dc.description.abstract | The power conversion efficiency (PCE) of state-of-the-art organic solar cells is still limited by significant open-circuit voltage (V-OC) losses, partly due to the excitonic nature of organic materials and partly due to ill-designed architectures. Thus, quantifying different contributions of the V-OC losses is of importance to enable further improvements in the performance of organic solar cells. Herein, the spectroscopic and semiconductor device physics approaches are combined to identify and quantify losses from surface recombination and bulk recombination. Several state-of-the-art systems that demonstrate different V-OC losses in their performance are presented. By evaluating the quasi-Fermi level splitting (QFLS) and the V-OC as a function of the excitation fluence in nonfullerene-based PM6:Y6, PM6:Y11, and fullerene-based PPDT2FBT:PCBM devices with different architectures, the voltage losses due to different recombination processes occurring in the active layers, the transport layers, and at the interfaces are assessed. It is found that surface recombination at interfaces in the studied solar cells is negligible, and thus, suppressing the non-radiative recombination in the active layers is the key factor to enhance the PCE of these devices. This study provides a universal tool to explain and further improve the performance of recently demonstrated high-open-circuit-voltage organic solar cells. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.subject | SURFACE RECOMBINATION | - |
dc.subject | ABSORPTION | - |
dc.title | Quantifying Quasi-Fermi Level Splitting and Open-Circuit Voltage Losses in Highly Efficient Nonfullerene Organic Solar Cells | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Woo, Han Young | - |
dc.identifier.doi | 10.1002/solr.202000649 | - |
dc.identifier.scopusid | 2-s2.0-85096722815 | - |
dc.identifier.wosid | 000590290500001 | - |
dc.identifier.bibliographicCitation | SOLAR RRL, v.5, no.1 | - |
dc.relation.isPartOf | SOLAR RRL | - |
dc.citation.title | SOLAR RRL | - |
dc.citation.volume | 5 | - |
dc.citation.number | 1 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | ABSORPTION | - |
dc.subject.keywordPlus | SURFACE RECOMBINATION | - |
dc.subject.keywordAuthor | nonfullerene acceptors | - |
dc.subject.keywordAuthor | organic solar cells | - |
dc.subject.keywordAuthor | quasi-Fermi level splitting | - |
dc.subject.keywordAuthor | quasi-steady-state photoinduced absorptions | - |
dc.subject.keywordAuthor | surface recombinations | - |
dc.subject.keywordAuthor | voltage losses | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.