Phenoxazine-based panchromatic organic sensitizers for dye-sensitized solar cells
2015 (English)In: Dyes and pigments, ISSN 0143-7208, E-ISSN 1873-3743, Vol. 116, 58-64 p.Article in journal (Refereed) Published
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.
IdentifiersURN: urn:nbn:se:kth:diva-164417DOI: 10.1016/j.dyepig.2014.12.020ISI: 000350936400008ScopusID: 2-s2.0-84922353161OAI: oai:DiVA.org:kth-164417DiVA: diva2:808199
QC 201504272015-04-272015-04-172015-04-27Bibliographically approved