Journal
DYES AND PIGMENTS
Volume 99, Issue 3, Pages 599-606Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2013.06.014
Keywords
Dye-sensitized solar cell; Dual-channel; Core bridge donor; Triphenylamine; Dye aggregation; Coadsorbent
Funding
- Korean Institute of Energy Technology Evaluation and Planning (KETEP) [20124010203190]
- Korea Government Ministry of Trade, Industry and Energy
- Korea Evaluation Institute of Industrial Technology (KEIT) [20124010203190] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Dual-channel (DC) anchorable organic dye based on an acceptor-pi-donor-core bridge donor-donor-pi-acceptor structural motif, was synthesized and used as sensitizer for dye sensitized solar cells (DSSCs). DC dye linked the two donors using a core bridge donor such as triphenylamine unit, which makes two channels maintaining a particular distance (>4 angstrom). The inter-planar DC5 exhibited dye aggregation and charge recombination due to strongly intermolecular pi-pi stacking between the channels of DC dyes adsorbed on the TiO2 surface. As a result, a solar cell based on DC5 with a hole conductor coadsorbent of HC-A1 showed better photovoltaic performance with a J(sc) of 8.90 mA cm(-2), a V-oc of 0.70 V, and an FF of 0.77, corresponding to an overall conversion efficiency (eta) of 4.80%. Published by Elsevier Ltd.
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