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Side-Chain Engineering of Donor-Acceptor Conjugated Small Molecules As Dopant-Free Hole-Transport Materials for Efficient Normal Planar Perovskite Solar Cells
Bao Tu1,2; Yang Wang1; Wei Chen1,3; Bin Liu1; Xiyuan Feng1,2; Yudong Zhu1,4; Kun Yang1; Zheng Zhang1; Yongqiang Shi1; Xugang Guo1; Hai-Feng Li2; Zikang Tang2; Aleksandra B. Djurisic3; Zhubing He1
2019-12-02
Source PublicationACS Applied Materials and Interfaces
ISSN1944-8244
Volume11Issue:51Pages:48556-48563
Abstract

Simultaneously 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.

KeywordSide-chain Engineering Donor-acceptor Conjugated Small Molecules Hole-transport Materials Dopant-free Perovskite Solar Cells
DOI10.1021/acsami.9b17386
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000505626900094
PublisherAMER CHEMICAL SOC; 1155 16TH ST, NW, WASHINGTON, DC 20036
Scopus ID2-s2.0-85077093543
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Cited Times [WOS]:29   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorXugang Guo; Hai-Feng Li; Zhubing He
Affiliation1.Department of Materials Science and Engineering,Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG),Southern University of Science and Technology,Shenzhen, Guangdong,No. 1088, Xueyuan Rd.,518055,China
2.Joint Key Laboratory of the Ministry of Education,Institute of Applied Physics and Materials Engineering,University of Macau,Taipa,Avenida da Universidade,999078,Macao
3.Department of Physics,University of Hong Kong,Pokfulam,999077,Hong Kong
4.Department of Electronic and Computer Engineering,Hong Kong University of Science and Technology,Clear Water Bay,Kowloon,999077,Hong Kong
First Author AffilicationFaculty of Social Sciences;  INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding Author AffilicationFaculty of Social Sciences;  INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation
GB/T 7714
Bao Tu,Yang Wang,Wei Chen,et al. Side-Chain Engineering of Donor-Acceptor Conjugated Small Molecules As Dopant-Free Hole-Transport Materials for Efficient Normal Planar Perovskite Solar Cells[J]. ACS Applied Materials and Interfaces,2019,11(51):48556-48563.
APA Bao Tu,Yang Wang,Wei Chen,Bin Liu,Xiyuan Feng,Yudong Zhu,Kun Yang,Zheng Zhang,Yongqiang Shi,Xugang Guo,Hai-Feng Li,Zikang Tang,Aleksandra B. Djurisic,&Zhubing He.(2019).Side-Chain Engineering of Donor-Acceptor Conjugated Small Molecules As Dopant-Free Hole-Transport Materials for Efficient Normal Planar Perovskite Solar Cells.ACS Applied Materials and Interfaces,11(51),48556-48563.
MLA Bao Tu,et al."Side-Chain Engineering of Donor-Acceptor Conjugated Small Molecules As Dopant-Free Hole-Transport Materials for Efficient Normal Planar Perovskite Solar Cells".ACS Applied Materials and Interfaces 11.51(2019):48556-48563.
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