Kinematical transformations in amorphous selenium alloys used in xerography

摘要: Differential scanning calorimetric (DSC) studies were carried out on xerographic photoreceptor materials of amorphous selenium (a-Se), a-Se1∃-xTex and a-Se:0.5 wt% As alloys with various amounts chlorine doping. Glass transformation kinetics bulk vapour-deposited film samples essentially identical indicating a similar structure for both forms. The glass transition temperature,Tg, in the a-Se1∃-xTexsystem was found to increase monotonically tellurium content up ∼13 which accompanied by fall activation energy,Egl, structural relaxation. 0.5wt% increasedTg, whereas doping used (∼100 ppm) had no effect onTg. Crystallization exotherms analysed using Kissinger method shown remain valid analysis integrating fundamental Kolmogoroff equation describing crystallization transformations nucleation growth. signifiance energy,EA, frequency factor,C0, is discussed interpreting different behaviour exhibited alloys. apparent temperature range accessed DSC experiment. When other authors' previous methods also considered, then 1/EA nearly linearly mean reciprocal temperature, 〈1/T〉, It argued that this arises if crystal growth rate scales inverse viscosity melt latter described Vogel-Tammann-Fulcher type behaviour. additives arsenic retard increasing viscosity. Chlorine have an inhibitory but due probably change kinetics, rather than rise.