A pH-Neutral Polyelectrolyte Hole Transport Layer for Improved Energy Band Structure at the Anode/PTB7 Junction and Improved Solar Cell Performance
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kang, Ju Hwan | - |
dc.contributor.author | Harit, Amit Kumar | - |
dc.contributor.author | Jeong, Ji-Eun | - |
dc.contributor.author | Woo, Han Young | - |
dc.contributor.author | Seo, Jung Hwa | - |
dc.contributor.author | Walker, Bright | - |
dc.date.accessioned | 2022-02-15T21:42:48Z | - |
dc.date.available | 2022-02-15T21:42:48Z | - |
dc.date.created | 2022-02-08 | - |
dc.date.issued | 2021-11 | - |
dc.identifier.issn | 2367-198X | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/135909 | - |
dc.description.abstract | In organic solar cells (OSCs), interfacial properties between the donor phase and hole transport layers (HTLs) are critical factors which govern charge extraction efficiency. Many ionic and polar materials are known to function as effective interfacial layers; however, an understanding of how ionic moieties affect the electronic band structure and characteristics of OSCs is lacking. Herein, a new, pH-neutral polyelectrolyte is introduced that resolves several problems which are encountered with the commonly used HTL, poly(3,4-ethylenedioxythiopene):polystyrenesulfonate (PEDOT:PSS). An effective p-type polyelectrolyte dopant is designed, comprising an anionically charged PSS backbone with easily reduced Cu2+ counterions (Cu:PSS), and interfacial properties for HTL/donor interfaces by photoelectron spectroscopy are analyzed. The effects of the polyelectrolyte on interfacial energy levels and charge extraction efficiency between the active layer and HTL are quantified. Using optimized processing conditions, the efficiency can be improved from 8.31% to 9.28% in conventional OSCs compared with a standard PEDOT:PSS HTL. The energy-level alignment at the HTLs/donor interface determined by UV photoelectron spectroscopy measurements reveals the origin of distinct differences in device performances. The reduced ionization potential (IP) and hole injections barrier (phi(h)) at the HTL/donor interface play a crucial role in efficient charge extraction in conventional OSCs. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.subject | REDUCED GRAPHENE OXIDE | - |
dc.subject | WORK FUNCTION | - |
dc.subject | HIGHLY EFFICIENT | - |
dc.subject | FILMS | - |
dc.subject | PEDOTPSS | - |
dc.subject | ELECTRODES | - |
dc.subject | RECOMBINATION | - |
dc.title | A pH-Neutral Polyelectrolyte Hole Transport Layer for Improved Energy Band Structure at the Anode/PTB7 Junction and Improved Solar Cell Performance | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Woo, Han Young | - |
dc.identifier.doi | 10.1002/solr.202100521 | - |
dc.identifier.scopusid | 2-s2.0-85115327792 | - |
dc.identifier.wosid | 000697928500001 | - |
dc.identifier.bibliographicCitation | SOLAR RRL, v.5, no.11 | - |
dc.relation.isPartOf | SOLAR RRL | - |
dc.citation.title | SOLAR RRL | - |
dc.citation.volume | 5 | - |
dc.citation.number | 11 | - |
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 | ELECTRODES | - |
dc.subject.keywordPlus | FILMS | - |
dc.subject.keywordPlus | HIGHLY EFFICIENT | - |
dc.subject.keywordPlus | PEDOTPSS | - |
dc.subject.keywordPlus | RECOMBINATION | - |
dc.subject.keywordPlus | REDUCED GRAPHENE OXIDE | - |
dc.subject.keywordPlus | WORK FUNCTION | - |
dc.subject.keywordAuthor | doping | - |
dc.subject.keywordAuthor | hole transport layers | - |
dc.subject.keywordAuthor | organic semiconductors | - |
dc.subject.keywordAuthor | polyelectrolytes | - |
dc.subject.keywordAuthor | solar cells | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
145 Anam-ro, Seongbuk-gu, Seoul, 02841, Korea+82-2-3290-2963
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.