A study on photoreceptor by using the effect of additives

We have been studied photosensitization mechanism's additive effect, of per ylene 3,4,9,10-tetracarboxyldiimide and X-phthalocyanine (charge generation materials), using the photochemical and photoelectrochemical approach. It was found that the photoreceptor on the excited state reacts with metal oxi de, which creates the charge transfer on the interface of SnO2/electrolyte. In the electrode (X5P1) made of five X-phthalocyanine and single perylene 3,4,9,10-tetracarboxyldiimide layers, the cathodic photocurrent of X-phthal ocyanine in the 400-600 nm region was increased by the addition of perylene 3,4,9,10-tetracarboxyldiimide. The maximum wavelength of fluorescence of p erylene 3,4,9,10-tetracarboxyldiimide showed no dependence on the temperatu re. The addition of 4-dibenzylamino-2-methylbenzaldehyde diphenylhydrazone known as charge transport material was represented as decreasing photocurre nt for X-phthalocyanine and perylene 3,4,9,10-tetracarboxyldiimide, respect ively. In the electrode (X1P1) made of single X-phthalocyanine and single p erylene 3,4,9,10-tetracarboxyldiimide layers, an anodic photocurrent of abo ut 10.5 nA was generated by addition of hydroquinone at 550 nm. And the cha racteristic of photoinduced discharge was shown to decrease by a factor of 5 and the speed of dark decay was increased by a factor of 1.2.