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J Am Chem Soc. 2004 Oct 6;126(39):12218-9.

High efficiency of dye-sensitized solar cells based on metal-free indoline dyes.

Author information

  • 1Technology Research Laboratory, Corporate Research Center, Mitsubishi Paper Mills Limited, 46 Wadai, Tsukuba-city, Ibaraki, 300-4247, Japan.

Abstract

We now report metal-free organic dyes having a new type of indoline structure, which exhibits high efficiencies in dye-sensitized solar cells. The solar energy to current conversion efficiencies with the new indoline dye was 6.51%. Under the same conditions, the N3 dye was 7.89% and the N719 dye was 8.26%. The new indoline dye was optimized for the amount of 4-tert-butyl pyridine in the electrolyte and cholic acid as a coadsorbent. Subsequently, the solar energy to current conversion efficiencies reached 8.00%. This value was the highest obtained efficiency for dye-sensitized solar cells based on metal-free organic dyes without an antireflection layer.

PMID:
15453726
[PubMed]
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