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Article: Side-Chain Engineering of Donor–Acceptor Conjugated Small Molecules As Dopant-Free Hole-Transport Materials for Efficient Normal Planar Perovskite Solar Cells

TitleSide-Chain Engineering of Donor–Acceptor Conjugated Small Molecules As Dopant-Free Hole-Transport Materials for Efficient Normal Planar Perovskite Solar Cells
Authors
Keywordsside-chain engineering
donor−acceptor conjugated small molecules
hole-transport materials
dopant-free
perovskite solar cells
Issue Date2019
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/aamick
Citation
ACS Applied Materials & Interfaces, 2019, v. 11 n. 51, p. 48556-48563 How to Cite?
AbstractSimultaneously improving efficiency and stability, which are particularly crucial factors for the commercialization of perovskite solar cells (PSCs), remains a major challenge. For high-efficiency normal PSCs, the development of stable dopant-free hole-transport materials (HTMs) seems imperative. Here, we developed potential donor–acceptor small molecules (BTTI) as HTMs for normal planar PSCs. Through tailoring its alkyl side-chain length as BTTI-C6, BTTI-C8, and BTTI-C12, our results show that upon shortening the side chain of BTTI, the hole mobility, film-forming capability, and resultant device performance were remarkably improved, with the device conversion efficiencies of 19.69% for BTTI-C6, 18.89% for BTTI-C8, and 17.49% for BTTI-C12. Meanwhile, compared to those made with the routine doped Spiro-OMeTAD, devices based on our dopant-free HTMs exhibited significantly improved stability. This work paves the way to the development of effective dopant-free HTMs for high-performance PSCs.
Persistent Identifierhttp://hdl.handle.net/10722/280380
ISSN
2019 Impact Factor: 8.758
2015 SCImago Journal Rankings: 2.381

 

DC FieldValueLanguage
dc.contributor.authorTu, B-
dc.contributor.authorWang, Y-
dc.contributor.authorChen, W-
dc.contributor.authorLiu, B-
dc.contributor.authorFeng, X-Y-
dc.contributor.authorZhu, Y-D-
dc.contributor.authorYang, K-
dc.contributor.authorZhang, Z-K-
dc.contributor.authorShi, Y-Q-
dc.contributor.authorGuo, X-G-
dc.contributor.authorLi, H-F-
dc.contributor.authorTang, Z-
dc.contributor.authorDjurisic, AB-
dc.contributor.authorHe, Z-B-
dc.date.accessioned2020-02-07T07:40:13Z-
dc.date.available2020-02-07T07:40:13Z-
dc.date.issued2019-
dc.identifier.citationACS Applied Materials & Interfaces, 2019, v. 11 n. 51, p. 48556-48563-
dc.identifier.issn1944-8244-
dc.identifier.urihttp://hdl.handle.net/10722/280380-
dc.description.abstractSimultaneously improving efficiency and stability, which are particularly crucial factors for the commercialization of perovskite solar cells (PSCs), remains a major challenge. For high-efficiency normal PSCs, the development of stable dopant-free hole-transport materials (HTMs) seems imperative. Here, we developed potential donor–acceptor small molecules (BTTI) as HTMs for normal planar PSCs. Through tailoring its alkyl side-chain length as BTTI-C6, BTTI-C8, and BTTI-C12, our results show that upon shortening the side chain of BTTI, the hole mobility, film-forming capability, and resultant device performance were remarkably improved, with the device conversion efficiencies of 19.69% for BTTI-C6, 18.89% for BTTI-C8, and 17.49% for BTTI-C12. Meanwhile, compared to those made with the routine doped Spiro-OMeTAD, devices based on our dopant-free HTMs exhibited significantly improved stability. This work paves the way to the development of effective dopant-free HTMs for high-performance PSCs.-
dc.languageeng-
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/aamick-
dc.relation.ispartofACS Applied Materials & Interfaces-
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in [JournalTitle], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [insert ACS Articles on Request author-directed link to Published Work, see http://pubs.acs.org/page/policy/articlesonrequest/index.html].-
dc.subjectside-chain engineering-
dc.subjectdonor−acceptor conjugated small molecules-
dc.subjecthole-transport materials-
dc.subjectdopant-free-
dc.subjectperovskite solar cells-
dc.titleSide-Chain Engineering of Donor–Acceptor Conjugated Small Molecules As Dopant-Free Hole-Transport Materials for Efficient Normal Planar Perovskite Solar Cells-
dc.typeArticle-
dc.identifier.emailDjurisic, AB: dalek@hku.hk-
dc.identifier.authorityDjurisic, AB=rp00690-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/acsami.9b17386-
dc.identifier.pmid31786921-
dc.identifier.scopuseid_2-s2.0-85077093543-
dc.identifier.hkuros309057-
dc.identifier.volume11-
dc.identifier.issue51-
dc.identifier.spage48556-
dc.identifier.epage48563-
dc.publisher.placeUnited States-

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