Hybrid photovoltaic cell with well-ordered nanoporous titania–P3HT by nanoimprinting lithography

Autor: Yong-Sang Kim, Jung-Min Kim, C.J. Kang, Hyun-Jung Her
Rok vydání: 2008
Předmět:
Zdroj: Journal of Physics and Chemistry of Solids. 69:1301-1304
ISSN: 0022-3697
DOI: 10.1016/j.jpcs.2007.10.121
Popis: We have made bulk heterojunction hybrid photovoltaic cells with highly ordered nanoporous titania (TiO 2 )–poly(3-hexylthiophene) (P3HT). The nanostructured titania, which has a periodic hexagonal hole array with 80–90 nm diameter, was fabricated by the nanoimprinting technique. The nanoporous titania was synthesized by coating the sol–gel mixture of titanium ethoxide (IV), HCl, and 2-propanol on indium tin oxide (ITO) surface. The coated surface was then embossed with an array of PMMA nanopoles, which was produced using a nanoporous alumina (Al 2 O 3 ) template. The photovoltaic cells with nanostructured titania have a higher power conversion efficiency of 0.16% compared to conventional thin-film titania, under air mass 1.5 (100 mW/cm 2 ) global illumination.
Databáze: OpenAIRE