Anchoring self-assembled monolayer at perovskite/hole collector interface for wide bandgap Sn-based solar cells with a record efficiency over 12%
DC Field | Value | Language |
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dc.contributor.author | Cho, SungWon | - |
dc.contributor.author | Pandey, Padmini | - |
dc.contributor.author | Yoon, Saemon | - |
dc.contributor.author | Ryu, Jun | - |
dc.contributor.author | Lee, Dong-Gun | - |
dc.contributor.author | Shen, Qing | - |
dc.contributor.author | Hayase, Shuzi | - |
dc.contributor.author | Song, Hochan | - |
dc.contributor.author | Choi, Hyosung | - |
dc.contributor.author | Ahn, Hyungju | - |
dc.contributor.author | Oh, Chang-Mok | - |
dc.contributor.author | Hwang, In-Wook | - |
dc.contributor.author | Cho, Jung Sang | - |
dc.contributor.author | Kang, Dong-Won | - |
dc.date.accessioned | 2023-11-08T08:41:34Z | - |
dc.date.available | 2023-11-08T08:41:34Z | - |
dc.date.issued | 2023-11 | - |
dc.identifier.issn | 2468-0230 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/68543 | - |
dc.description.abstract | In perovskite solar cells (PSCs), surface and interfacial conditions play a crucial role in determining overall device performance. In typical p-i-n architecture of wide bandgap (WBG, 1.6–1.8 eV) Sn-based PSCs, the interface between hole transport layer (HTL) and perovskite (PVK) has a significant impact on hole transport, interfacial chemical interactions, and perovskite film quality. This study aims to address these issues by incorporating self-assembled monolayers (SAMs) MeO-2PACz and 2PACz at the PEDOT:PSS HTL/Sn-PVK interface. X-ray photoelectron spectroscopy confirmed the interaction between the anchoring group (P-O−) of the SAM and S+ in PEDOT:PSS through phosphonic acid deprotonation at the interface, and improved work function was observed through the UPS study. Furthermore, the SAMs contributed to the formation of a compact PVK film with enhanced preferential orientation. Interestingly, a chemical interaction between the oxygen-donor of the methoxy (CH3O−) terminal group in MeO-2PACz and the Sn-halide octahedra was observed, which partly contributed to suppress the oxidation of Sn2+ state and defect density of perovskite. Additionally, femtosecond transient absorption spectroscopy (fs-TAS) showed faster trap filling (τ1) characteristics (τ1∼19 ps). Fs-TAS and photoluminescence further indicated fast hole extraction (τ2∼125 ps) as well as high quenching efficiency of 47%. Based on these findings, an unprecedented efficiency of η∼12.16% (certified 11.60%) was achieved in WBG Sn-PSCs using the HTL/MeO-2PACz/PVK structure, outperforming the HTL/2PACz/PVK (8.78%) and HTL/PVK (7.44%) structures. This study provides crucial guidelines on interfacial engineering for WBG Sn-PSCs. © 2023 Elsevier B.V. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | Elsevier B.V. | - |
dc.title | Anchoring self-assembled monolayer at perovskite/hole collector interface for wide bandgap Sn-based solar cells with a record efficiency over 12% | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.surfin.2023.103478 | - |
dc.identifier.bibliographicCitation | Surfaces and Interfaces, v.42 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 001088701300001 | - |
dc.identifier.scopusid | 2-s2.0-85173171955 | - |
dc.citation.title | Surfaces and Interfaces | - |
dc.citation.volume | 42 | - |
dc.type.docType | Article | - |
dc.publisher.location | 네델란드 | - |
dc.subject.keywordAuthor | Hole extraction | - |
dc.subject.keywordAuthor | MeO-2PACz | - |
dc.subject.keywordAuthor | Self-assembled monolayers | - |
dc.subject.keywordAuthor | Sn-perovskite | - |
dc.subject.keywordAuthor | Wide bandgap | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | CHEMISTRY | - |
dc.subject.keywordPlus | ACID | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Coatings & Films | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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