科研之友
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摘要
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.
- 出版日期2014-4
