很早以前就已知道有机染料在光照下导电率发生剧烈变化。最近对此作了系统的研究,结果表明其导电机理与无机物光导现象相同,即属于电子迁移,而不是杂质或分解产物所致,无机物光导性中已确立的许多基本理论对于有机染料光导性均能适用。例如,热与光激发能量可由下面两式表示: It has long been known that organic dyes undergo dramatic changes in electrical conductivity under illumination. Recent research has been conducted on this system. The results show that the mechanism of conduction is the same as that of inorganic photoconductors, that is, it belongs to electron transfer rather than impurities or decomposition products. Many basic theories established in photoconductivity of inorganic materials have been applied to organic photoconductors Sex can apply. For example, the heat and light excitation energy can be expressed by the following two equations: