| 摘要 |
PURPOSE:To provide high sensitivity at the longer wavelength side, by using a photoconductive composition contg. a thiopyrylium or selenapyrylium dye. CONSTITUTION:To a photocodutive composition is added a compoud represented by the formula, wherein each of R1-R4 is optionally substituted aryl, the substituent is methoxy, ethoxy or the like, R5 is alkyl, X is S or Se, and A(-) is an anion. |
