id:"swepub:oai:DiVA.org:kth-36414"
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- Ning, Zhijun (author)
Starburst triarylamine based dyes for efficient dye-sensitized solar cells
- Article/chapterEnglish2008
Publisher, publication year, extent ...
- 2008-04-15
- American Chemical Society (ACS),2008
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:kth-36414
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-36414URI
- https://doi.org/10.1021/jo800159tDOI
Supplementary language notes
- Language:English
- Summary in:English
Part of subdatabase
- SwePubSwePub
Classification
Notes
- QC 20110712
- We report here on the synthesis and photophysical/electrochemical properties of a series of novel starburst triarylamine-based organic dyes (S1, S2, S3, and S4) as well as their application in dye-sensitized nanocrystalline TiO2 solar cells (DSSCs). For the four designed dyes, the starburst triarylamine group and the cyanoacetic acid take the role of electron donor and electron acceptor, respectively. It was found that the introduction of starburst triarylamine group to form the D-D-pi-A configuration brought about superior performance over the simple D-pi-A configuration, in terms of bathochromically extended absorption spectra, enhanced molar extinction coefficients and better thermo-stability. Moreover, the HOMO and LUMO energy levels tuning can be conveniently accomplished by alternating the donor moiety, which was confirmed by electrochemical measurements and theoretical calculations. The DSSCs based on the dye S4 showed the best photovoltaic performance: a maximum monochromatic incident photon-to-current conversion efficiency (IPCE) of 85%, a short-circuit photocurrent density (J(sc)) of 13.8 mA cm(-2), an open-circuit photovoltage (V-oc) of 0.63 V, and a fill factor (ff) of 0.69, corresponding to an overall conversion efficiency of 6.02% under 100 mW cm(-)2 irradiation. This work suggests that the dyes based on starburst triphenylamine donor are promising candidates for improvement of the performance of the DSSCs.
Subject headings and genre
- NATURVETENSKAP Kemi Teoretisk kemi hsv//swe
- NATURAL SCIENCES Chemical Sciences Theoretical Chemistry hsv//eng
- SOLUBLE PERYLENE DERIVATIVES; NANOCRYSTALLINE TIO2 FILMS; SNO2 NANOPOROUS ELECTRODE; INTERNAL CHARGE-TRANSFER; ORGANIC-DYES; HIGHLY EFFICIENT; TETRAHYDROQUINOLINE DYES; PHOTOSENSITIZATION; CONJUGATION; CHROMOPHORES
- Theoretical chemistry
- Teoretisk kemi
Added entries (persons, corporate bodies, meetings, titles ...)
- Zhang, QiongKTH,Teoretisk kemi och biologi(Swepub:kth)u1r2uw7h (author)
- Wu, Wenjun (author)
- Pei, Hongcui (author)
- Liu, Bo (author)
- Tian, He (author)
- KTHTeoretisk kemi och biologi (creator_code:org_t)
Related titles
- In:Journal of Organic Chemistry: American Chemical Society (ACS)73:10, s. 3791-37970022-32631520-6904
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