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Completely Transparent Conducting Oxide-Free and Flexible Dye-Sensitized Solar Cells Fabricated on Plastic Substrates
- Completely Transparent Conducting Oxide-Free and Flexible Dye-Sensitized Solar Cells Fabricated on Plastic Substrates
- 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
- Ewha Authors
- 김경곤; 김봉수
- SCOPUS Author ID
- 김경곤; 김봉수
- Issue Date
- Journal Title
- ACS NANO
- 1936-0851; 1936-086X
- vol. 9, no. 4, pp. 3760 - 3771
- dye-sensitized solar cells; TCO-free; flexible; plastic substrates; transfer method
- AMER CHEMICAL SOC
- SCI; SCIE; SCOPUS
- 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 TiO2 and 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%.
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