Temperature-dependent xerographic depletion discharge studies of a-Se:Te alloys

M. Baxendale; C. Juhasz

doi:10.1117/12.19817

1 July 1990 Temperature-dependent xerographic depletion discharge studies of a-Se:Te alloys

M. Baxendale, C. Juhasz

Proceedings Volume 1253, Hard Copy and Printing Materials, Media, and Processes; (1990) https://doi.org/10.1117/12.19817
Event: Electronic Imaging: Advanced Devices and Systems, 1990, Santa Clara, CA, United States

Abstract

The time evolution of the surface potential of xerographic photoreceptors charged in the dark can yield valuable information conerning, the underlying thermal generation processes and the energetic distribution of emission centres. Xerographic dark discharge of a-Se :Te films proceeds according to the xerographic depletion discharge (XDD) model. According to this model the depletion time td should be singly activated. We find that for a-Se :Te alloys in the alloying regime 5-1 2wt% Arrhenius plots of td are non-linear and yield characteristic attempt-to-escape frequencies typically 1 8 times greater than phonon frequencies in these materials. This result can be only partially accounted for by the recent fourth-order approximation of the demarcation energy concept. The presence of exponential distributions of emission centres in this material system is shown by the application of the field-enhanced XDD model at constant temperture. A theoretical fit of temperature-dependent data is then achieved by consideration of the occupation function of emission centres close to EF and the temperature dependence of the mobility gap. For the materials studied, the best fit to the experimental data was achieved with EF located at an energy corresponding to half the optical gap from the mobility edges. The thermal generation mechanism is identified as the process C3 -* C30+h followed by C3° C1 + h.

Citation Download Citation

M. Baxendale and C. Juhasz "Temperature-dependent xerographic depletion discharge studies of a-Se:Te alloys", Proc. SPIE 1253, Hard Copy and Printing Materials, Media, and Processes, (1 July 1990); https://doi.org/10.1117/12.19817

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available