ICCAS OpenIR
Efficient structural modification of triphenylamine-based organic dyes for dye-sensitized solar cells
Li, Gang1,2; Jiang, Ke-Jian1; Li, Ying-Feng1; Li, Shao-Lu1; Yang, Lian-Ming1
2008-07-31
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447
Volume112Issue:30Pages:11591-11599
AbstractA series of new organic D-g-A dyes, coded as DS-1, DS-2, DS-3, and DS-4, was designed, synthesized, and characterized by H-1 NMR, C-13 NMR, infrared spectroscopy, mass spectrometry, and elemental analysis. These dyes consist of a di(p-tolyl)phenylamine moiety as an electron donor, a cyanoacetic acid moiety as an electron acceptor/anchoring group, and different types of conducting thiophene units as electron spacers to bridge the donor and acceptor. It was found that both the use of di(p-tolyl)phenylamine donor and the variation of electron spacers in the D-pi-A dyes played an essential role in modifying and/or tuning physical properties of organic dyes. These dyes were developed as sensitizers for the application in dye-sensitized TiO2 nanocrystalline solar cells (DSSCs), and their photophysical and electrochemical properties were investigated. The DSSCs based on the dyes gave good performance in terms of incident photon-to-current conversion efficiency (IPCE) in the range of 400-700 nm. A solar-energy-to-electricity conversion efficiency (eta) of 7.00% was obtained with the DSSC based on 5-[[2-[p-(di-p-tolylamino)]styryl]thiophene-yl]thiophene-2-cyanoacrylic acid (DS-2) under simulated AM 1.5 G irradiation (100 mW/cm(2)): short-circuit current density (J(sc)) of 15.3 mA cm(-2); open-circuit voltage (V-oc) of 0.633 V; fill factor (FF) of 0.725. The density functional theory (DFT) calculation suggests that the electron-transfer distribution moves from the donor unit to the acceptor under light irradiation, which means efficient intramolecular charge transfer.
DOI10.1021/jp802436v
Indexed BySCI
Language英语
WOS IDWOS:000257927100077
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:165[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/63906
Collection中国科学院化学研究所
Corresponding AuthorJiang, Ke-Jian
Affiliation1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, New Mat Lab, Inst Chem, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Li, Gang,Jiang, Ke-Jian,Li, Ying-Feng,et al. Efficient structural modification of triphenylamine-based organic dyes for dye-sensitized solar cells[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2008,112(30):11591-11599.
APA Li, Gang,Jiang, Ke-Jian,Li, Ying-Feng,Li, Shao-Lu,&Yang, Lian-Ming.(2008).Efficient structural modification of triphenylamine-based organic dyes for dye-sensitized solar cells.JOURNAL OF PHYSICAL CHEMISTRY C,112(30),11591-11599.
MLA Li, Gang,et al."Efficient structural modification of triphenylamine-based organic dyes for dye-sensitized solar cells".JOURNAL OF PHYSICAL CHEMISTRY C 112.30(2008):11591-11599.
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