Recently, with increase of demand of flat panel displays, it is required to develop a transparent electroconductive film without using a rare metal. In this study, we carried out the formation of a transparent electroconductive film derived from fullerene. C
60 was evaporated on a quartz substrate, and then we irradiate ultraviolet light on the films for 72 or 120 h, respectively. After the irradiation, nickel thin film formed on the C
60 film, and then heat-treatment was carried out in an electric furnace with a vacuum of 10
−4 Pa. Raman spectra showed that C
60 films were polymerized by ultraviolet light irradiation. Although polymerized C
60 films tended to become amorphous structure by heat-treatment of 873 K for 10 min, the films covered with nickel as a catalyst tended to be graphitized by the same treatment. The obtained films indicated transparency, and the minimum electrical resistivity was 10
−3 Ω cm.
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