Inverted type bulk-heterojunction organic solar cell using electrodeposited titanium oxide thin films as electron collector electrode

摘要

We developed an inverted type bulk-heterojunction organic solar cell with 1 cm~2 active area using a fluorine-doped tin oxide/electrodeposited amorphous (TiO_x) or anatase (TiO_2) titanium oxide electrode instead of the low work-functional electrode such as Al. The cell with TiO_2 showed the power conversion efficiency (η) of 2.5% by irradiating AM 1.5-100 mW cm~(-2) simulated sunlight. While, the performance of the cell with TiO_x was almost maintained in an ambient atmosphere under continuous light irradiation of 10 h, although slightly small initial η value of 2.1% was observed.