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Phenoxazine-based panchromatic organic sensitizers for dye-sensitized solar cells
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
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2015 (English)In: Dyes and pigments, ISSN 0143-7208, E-ISSN 1873-3743, Vol. 116, 58-64 p.Article in journal (Refereed) Published
Abstract [en]

A series of metal-free organic dyes LJJ101-LJJ103 composed of phenoxazine unit and indolinum carboxyl acid derivative have been synthesized for dye-sensitized solar cells. A systematic investigation has been conducted for the photology and electrochemistry properties of dyes LJJ101-LJJ103. Panchromatic spectra responses for all the three dyes have been obtained and extended to about 800 nm in near-infrared region. Compared to LJJ101, the introduction of thiophene and squaraine unit causes a red-shift absorption response for LJJ102 and LJJ103, respectively. When applied in dye-sensitized solar cells under AM 1.5 illumination, the device sensitized by LJJ103 yields the best conversion efficiency of 5.1% with a short-circuit photocurrent density of 13.7 mA/cm(2), an open-circuit photovoltage of 502 mV and a fill factor of 74.0%.

Place, publisher, year, edition, pages
2015. Vol. 116, 58-64 p.
National Category
Organic Chemistry
URN: urn:nbn:se:kth:diva-164417DOI: 10.1016/j.dyepig.2014.12.020ISI: 000350936400008ScopusID: 2-s2.0-84922353161OAI: diva2:808199

QC 20150427

Available from: 2015-04-27 Created: 2015-04-17 Last updated: 2015-04-27Bibliographically approved

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Sun, Licheng
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