| 摘要 |
PURPOSE:To enhance sensitivity, by incorporating a specified branched-chain cyanine compd. as a charge carrier generating substance. CONSTITUTION:A photosensitive layer formed on a conductive substrate contains a cyanine compd. selected from a group consisting of compds. expressed by the general formulae ( I ), (II) in which R1, R2, R3 are each independently alkyl or alkenyl; Z1, Z2, Z3 are each -CH2- or -CH=CH- which may be substd. independently by -O-, -S-, -Se-, or alkyl; l, m, n are each independently 0 or 1; and X<-> is anionic atom or an anionic atomic group. and their derivs having substituents on the aromatic rings. Said cyanine compd. is higher in sensitivity than those of straight-chain cyanine compds. The cyanine compd. is dispersed into a binder or laminated with a charge transfer layer. |
