Hydrogen diffusion in the hydrogen collision model of amorphous silicon metastability
Conference
·
OSTI ID:20107928
The trap-controlled model of H diffusion that underpins the H collision model of amorphous silicon metastability provides new insight into thermal and light-enhanced H diffusion in a-Si:H. The longstanding puzzle of the linear DB-dependence of diffusion coefficient with doping is resolved. Expressions for the light-induced H diffusion coefficient are derived with and without D-for-H exchange reactions. It is shown that D-for-H exchange does not affect the long-time diffusion coefficient that is measured under illumination.
- Research Organization:
- National Renewable Energy Lab., Golden, CO (US)
- Sponsoring Organization:
- US Department of Energy
- DOE Contract Number:
- AC36-83CH10093
- OSTI ID:
- 20107928
- Country of Publication:
- United States
- Language:
- English
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