Abstract
We report here a dye-sensitized solar cell structure having two different dyes with complementary absorption properties, which is different from the dye-cocktail method. The developed method allows two different dyes to be adsorbed on the sintered Ti O2 layers without thermal decomposition, which the conventional procedure of dye-sensitized solar cell has been unable to do. The contribution of different dyes to photocurrent generation has been confirmed by incident-photon-to-current conversion efficiency (IPCE) and photocurrent transient spectroscopy. The heterosensitizer-junction type demonstrates higher IPCE than the single-sensitizer structure, thanks to complementary absorption characteristics.
Original language | English |
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Article number | 142103 |
Journal | Applied Physics Letters |
Volume | 92 |
Issue number | 14 |
DOIs | |
State | Published - 2008 |
Bibliographical note
Funding Information:This work was supported in part by the KIST internal projects under Contract Nos. 2E20000 and 2E20010, and the MOCIE new and renewable energy R&D project under Contract No. 2006-N-PV12-P-05. The authors are grateful to Dr. A. J. Frank and Dr. J. van de Lagemaat (NREL, USA) for their valuable discussion.