| 摘要 |
PROBLEM TO BE SOLVED: To provide an element having high transfer efficiency by adsorbing organic pigment such that the pigment coloring groups exist in a plurality in the vertical direction to surfaces of semiconductor particulates, and forming a metallic polynuclear complex part as a single coloring group. SOLUTION: Semicondcutor particulates, sensitized by simultaneously using at least one kind of methine pigment of formula I and at least one kind of methine pigment of formula II, are preferably used. In formulas I and II, Z1 and Z2 represent an atomic group required to form a nitrogen-containing heterocycle, and R1 and R2 represent an alkyl group or an aryl group, and Q1 and Q2 represent a methine group or a polymethine group required to form methine pigment by a compound respectively expressed by formulas I and II, and L1 to L4 represent a methine group, and p1 and p2 represent 0 or 1. Here, Z1 , R1 and Q1 have a substitutional group becoming cation pigment by methine pigment expressed by formula I, and Z2 , R2 and Q2 have a substitutional group becoming anion pigment by methine pigment of the formula II. M1 and M2 represent respectively electric charge balanced anion and cation. Symbols m1 and m2 represent the number 0 to 10 required to neutralize electric charge of a molecule. |
