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Completely Transparent Conducting Oxide-Free and Flexible Dye-Sensitized Solar Cells Fabricated on Plastic Substrates

Authors :
Yoo, Kicheon
Kim, Jae-Yup
Lee, Jin Ah
Kim, Jin Soo
Lee, Doh-Kwon
Kim, Kyungkon
Kim, Jin Young
Kim, BongSoo
Kim, Honggon
Kim, Won Mok
Kim, Jong Hak
Ko, Min Jae
Source :
ACS Nano; April 2015, Vol. 9 Issue: 4 p3760-3771, 12p
Publication Year :
2015

Abstract

To achieve commercialization and widespread application of next-generation photovoltaics, it is important to develop flexible and cost-effective devices. Given this, the elimination of expensive transparent conducting oxides (TCO) and replacement of conventional glass substrates with flexible plastic substrates presents a viable strategy to realize extremely low-cost photovoltaics with a potentially wide applicability. To this end, we report a completely TCO-free and flexible dye-sensitized solar cell (DSSC) fabricated on a plastic substrate using a unique transfer method and back-contact architecture. By adopting unique transfer techniques, the working and counter electrodes were fabricated by transferring high-temperature-annealed TiO2and Pt/carbon films, respectively, onto flexible plastic substrates without any exfoliation. The fabricated working electrode with the conventional counter electrode exhibited a record efficiency for flexible DSSCs of 8.10%, despite its TCO-free structure. In addition, the completely TCO-free and flexible DSSC exhibited a remarkable efficiency of 7.27%. Furthermore, by using an organic hole-transporting material (spiro-MeOTAD) with the same transfer method, solid-state flexible TCO-free DSSCs were also successfully fabricated, yielding a promising efficiency of 3.36%.

Details

Language :
English
ISSN :
19360851 and 1936086X
Volume :
9
Issue :
4
Database :
Supplemental Index
Journal :
ACS Nano
Publication Type :
Periodical
Accession number :
ejs35185657
Full Text :
https://doi.org/10.1021/acsnano.5b01346