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New Organic Dyes with a Phenanthrenequinone Derivative as the pi-Conjugated Bridge for Dye-Sensitized Solar Cells
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2013 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 117, no 25, 12936-12941 p.Article in journal (Refereed) Published
Abstract [en]

A series of organic dyes based on a phenanthrenequinone derivative have been employed for the first time as a it-conjugated bridge in the molecular design of D-pi-A structured organic dyes. Photophysical and electrochemical properties of dyes JH201-JH203 have been systematically investigated. The result shows that dye JH202 exhibits a higher molar extinction coefficient and widened absorption spectrum than dye JH201. Upon replacing the butoxyltriphenylamiine electron donor with phenothiazine, a bathochromic shift absorption spectrum for dye JH203 was observed. When applied in dye-sensitized solar cells (DSSCs), the device sensitized by JH203 yields the best photo-to-current conversion efficiency of 6.0% under standard AM 1.5G illumination (100 rnW/cm(2)) with a short-circuit photocurrent density (J(sc)) of 11.1 mA/cm(2), an open circuit photovoltage (V-oc) of 720 mV, and a fill factor (ff) of 74.9%. The maximum incident photo-to-current conversion efficiency reaches 87% at 460 nm.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2013. Vol. 117, no 25, 12936-12941 p.
Keyword [en]
Conjugated bridges, Dye-Sensitized solar cell, Dye-sensitized solar cells, Incident photo-to-current conversion efficiencies, Molar extinction coefficient, Open-circuit photovoltage, Phenanthrenequinone, Short-circuit photocurrent densities
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-125574DOI: 10.1021/jp400011wISI: 000321236400003Scopus ID: 2-s2.0-84879655375OAI: oai:DiVA.org:kth-125574DiVA: diva2:639946
Funder
Swedish Energy AgencyKnut and Alice Wallenberg Foundation
Note

QC 20130812

Available from: 2013-08-12 Created: 2013-08-09 Last updated: 2017-12-06Bibliographically approved

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Sun, Licheng

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