Modifying organic phenoxazine dyes for efficient dye-sensitized solar cells
2011 (English)In: Journal of Materials Chemistry, ISSN 0959-9428, E-ISSN 1364-5501, Vol. 21, no 33, 12462-12472 p.Article in journal (Refereed) Published
Four organic dyes bearing the phenoxazine chromophore have been synthesized and applied in dye-sensitized solar cells (DSCs). The effect of different dye structures on the performance of the DSCs was investigated systematically with photophysical, photovoltaic as well as photoelectrochemical methods. Due to the slow recombination process between injected electrons and electrolyte, the IB3 dye with two 2,4-dibutoxyphenyl units showed the best efficiency of 7.0% under 100 mW cm(-2) light illumination in the liquid state-DSCs. Moreover, the phenoxazine dyes-based solid state-DSCs were fabricated for the first time. With the IB4 dye, a higher efficiency of 3.2% has been achieved under the same light intensity.
Place, publisher, year, edition, pages
2011. Vol. 21, no 33, 12462-12472 p.
IdentifiersURN: urn:nbn:se:kth:diva-38972DOI: 10.1039/c1jm12071aISI: 000293694700046ScopusID: 2-s2.0-80051633132OAI: oai:DiVA.org:kth-38972DiVA: diva2:438738
FunderKnut and Alice Wallenberg FoundationSwedish Research Council