title: Formation of artificial pores in nano-TiO2 photo-electrode films using acetylene-black for high-efficiency, dye-sensitized solar cells.
abstract: Acetylene-black paste without a light scattering layer was applied to meso-porous TiO2 photo-electrode films with a crystalline framework, a low residual carbon, and a tunable morphological pore size. The thermal-treated TiO2 photo-electrode films had an increased acetylene-black concentration with an increase in artificial pores and a decrease in residual carbon. The performance of dye-sensitized solar cells (DSSCs) was enhanced by the use of the TiO2 photo-anode pastes at various acetylene-black concentrations. The photo-conversion efficiency of the DSSCs using TiO2 photo-electrode films with 1.5 wt% acetylene-black was enhanced from 7.98 (no acetylene-black) to 9.75% without the integration of a light- scattering layer.
authors.affiliation: Sollar Cell R&D Team, SeAH E&T Co. 1688-1, Shinil-Dong, Daeduk-Gu, 306-230, Daejeon, Korea.
authors.forename: Tae-Yeon
authors.initials: TY
authors.lastname: Cho
authors.forename: Chi-Whan
authors.initials: CW
authors.lastname: Han
authors.forename: Yongseok
authors.initials: Y
authors.lastname: Jun
authors.forename: Soon-Gil
authors.initials: SG
authors.lastname: Yoon