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 2024-01-20T07:30:56Z 2024-01-20T07:30:56Z 2021-09-05 2015-04 1936-0851 https://pubs.kist.re.kr/handle/201004/125593 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%. English AMER CHEMICAL SOC LOW-COST TCO-FREE ANNEALING TEMPERATURE EFFICIENCY TIO2 IMPEDANCE ELECTROLYTE PERFORMANCE ROUTE Completely Transparent Conducting Oxide-Free and Flexible Dye-Sensitized Solar Cells Fabricated on Plastic Substrates Article 10.1021/acsnano.5b01346 1 ACS NANO, v.9, no.4, pp.3760 - 3771 ACS NANO 9 4 3760 3771 scie scopus 000353867000037 2-s2.0-84928969782 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article LOW-COST TCO-FREE ANNEALING TEMPERATURE EFFICIENCY TIO2 IMPEDANCE ELECTROLYTE PERFORMANCE ROUTE dye-sensitized solar cells TCO-free flexible plastic substrates transfer method