ICCAS OpenIR
Solution-Processed Bulk-Heterojunction Photovoltaic Cells Based on Dendritic and Star-Shaped D-pi-A Organic Dyes
Wang, Jin-Liang2; He, Zhicai3; Wu, Hongbin3; Cui, Haibo1; Li, Yan1; Gong, Qihuang1; Cao, Yong3; Pei, Jian2
2010
Source PublicationCHEMISTRY-AN ASIAN JOURNAL
ISSN1861-4728
Volume5Issue:6Pages:1455-1465
AbstractA series of D-pi-A organic dendritic and star-shaped molecules based on three various chromophores (i.e., the truxene nodes, triphenylamine moieties as the donor, and benzothiadiazole chromophore as the acceptor) and their corresponding model compounds are facilely developed. Their photophysical and electrochemical properties are investigated in detail by UV/Vis absorption and photoluminescent spectroscopy, and cyclic voltammetry. By changing the various conjugated spacers (i.e., single bond, double bond, and triple bond) among the three chromophores of dendritic series, their photophysical properties (that is, the one-photon absorption range and two-photon absorption cross-section values) are effectively modulated. All D-pi-A conjugated oligomers show a broad and strong absorption band from 250 to 700 nm in thin films. Solution-processed bulk-heterojunction photovoltaic devices using our oligomer as donor and PCBM as acceptor are fabricated and measured. The power conversion efficiency of the devices based on our oligomers continuously increases from DBTTr to TrTD2A as a result of an increasing relative absorption intensity in longer wavelength region by changing the donor-acceptor ratio and conjugated spacers between the donor and acceptor. The power conversion efficiency of the devices based on TrTD2A was 0.54% under the illumination of AM 1.5 and 100 mW cm(-2), which is the highest value recorded based on D-pi-A conjugated oligomers containing triphenylamine moieties and benzothiadiazole chromophores with truxene to date.
KeywordConducting Materials Dendrimers Molecular Devices Molecular Electronics Photophysics
DOI10.1002/asia.200900686
Indexed BySCI
Language英语
WOS IDWOS:000278840200024
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/69582
Collection中国科学院化学研究所
Corresponding AuthorGong, Qihuang
Affiliation1.Peking Univ, Dept Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China
2.Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Key Labs Bioorgan Chem & Mol Engn, Beijing 100871, Peoples R China
3.S China Univ Technol, Inst Polymer Optoelect Mat & Devices, Key Labs Specially Funct Mat, Minist Educ, Guangzhou 510640, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Wang, Jin-Liang,He, Zhicai,Wu, Hongbin,et al. Solution-Processed Bulk-Heterojunction Photovoltaic Cells Based on Dendritic and Star-Shaped D-pi-A Organic Dyes[J]. CHEMISTRY-AN ASIAN JOURNAL,2010,5(6):1455-1465.
APA Wang, Jin-Liang.,He, Zhicai.,Wu, Hongbin.,Cui, Haibo.,Li, Yan.,...&Pei, Jian.(2010).Solution-Processed Bulk-Heterojunction Photovoltaic Cells Based on Dendritic and Star-Shaped D-pi-A Organic Dyes.CHEMISTRY-AN ASIAN JOURNAL,5(6),1455-1465.
MLA Wang, Jin-Liang,et al."Solution-Processed Bulk-Heterojunction Photovoltaic Cells Based on Dendritic and Star-Shaped D-pi-A Organic Dyes".CHEMISTRY-AN ASIAN JOURNAL 5.6(2010):1455-1465.
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