孔雀石绿增感聚苯乙炔的光导体

采用电位放电技术研究孔雀石绿（ＭＧ）增感顺式聚苯乙炔（ｃｔ－ＰＰＡ）光导体的光敏性，发现孔雀石绿是顺式聚苯乙炔新的有效增感剂。以Ａｌ／ｃｔ－ＰＰＡ：ＭＧ：ＰＣ（１００：５：１０）（１～１．５μｍ）／ＰＶＫ：ＴＰＡ：ＰＣ（１０：１０：１）（１５～２０μｍ）构成的光导体显示好的光敏性：表面接受电位，Ｖｍａｘ＞７００Ｖ；残余电位，Ｖｍｉｎ＜５０Ｖ；暗衰速率，ＲＤ＜１０Ｖ／ｓ；光衰放电量，△Ｖｔ＞５０％（１．０ｓ）；半衰时间，Ｔ１２＝０．８７Ｓ；感光灵敏度，Ｓ＝２．３×１０－３（１ｘ．ｓ）－１，较未增感ＰＰＡ光导体有较大的提高。ＭＧ对ＰＰＡ为光谱增感

ELECTROPHOTOGRAPHIC PHOTORECEPTOR DEVICES INCORPORATING POLYPHENYLACETYLENE SENSITIZED BY MALACHIT GREEN

The photosensitivity of electrophotographic photoreceptor (P /R) devices incorporating polyphenylacetylene (ct-PPA) sensitized with malachit green (MG) has been investigated by means of potential discharge techniques. It was found that MG is a new and powerful sensitizer for the P /R device of ct-PPA. The P /R device with Al /ct-PPA:MG:PC (100:5:10)(1～1.5 μ m)PVK:TPA:PC(10:10:1)(15～20 μ m)appeared preferable in photosensitivity enhancement and showed good photosensitivity:initial surface potential, V max >700V;residual surface potrntial,V min <50V;darkdecay, RD<10V/s;photo-discharge,△ V t >50%(1.0s);half decay time, T 1/2 =0.87s, and photosensitivity,S=2.3×10 -3 (1x.s) -1 。The possible mechanism of high photosensitivity in MG semsitized ct-PPA may be spectral sensitization only.