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Avalanche breakdown in amorphous selenium (a Se) and related materials: Brief review, critique, and proposal

K. TANAKA1,*

Affiliation

  1. Department of Applied Physics, Graduate School of Engineering, Hokkaido University, Sapporo Kita ku, 060 8628, Japan

Abstract

Optically triggered avalanche breakdown in a Se films has been amply demonstrated and analyzed recently on the basis of a lucky drift model, while the analyses seem to pose perplexing problems. We suggest a new idea, which takes disordered structures in a Se into account with an assumption of two kinds of impact ionization processes. This model provides plausible parameters for the avalanche behavior and reasonable explanations for temperature dependence. We also discuss similar phenomena in other amorphous materials..

Keywords

Avalanche, Amorphous, Selenium, High field, Transport.

Submitted at: Jan. 15, 2014
Accepted at: March 13, 2014

Citation

K. TANAKA, Avalanche breakdown in amorphous selenium (a Se) and related materials: Brief review, critique, and proposal, Journal of Optoelectronics and Advanced Materials Vol. 16, Iss. 3-4, pp. 243-251 (2014)