Photo-conductive composition and CRT bulb having photo-conductive layer formed of the same

摘要

A photo-conductive composition and CRT bulb having a photo-conductive layer formed of the same are provided. The photo-conductive composition comprises 5-15 wt % of a charge transmitting substance, represented by the structural formula (1); <IMAGE> (1) where R1 is selected from the group consisting of a phenyl group substituted by one to three substituents selected from the group consisting of amino, dialkylamino, C1-C6 alkoxy, C1-C6 alkyl and cyano groups; 9-alkyl carbazole group; naphthyl group, and R2 and R3 are same or different independently from each other, each being selected from the group consisting of hydrogen and C1-C6 alkyl, phenyl and naphthyl groups, and n is between 0 and 2; 1-15 wt % of a charge generating substance which absorbs light in the wavelength range of an ultraviolet region; 70-94 wt % of a binder; and 0.05-1 wt % of a surfactant. The photo-conductive composition exhibits excellent sintering characteristic and can form a photoconductive layer having excellent coating properties, durability and luminance.