Picture of person typing on laptop with programming code visible on the laptop screen

World class computing and information science research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.

Explore

On the lack of observable light-induced hydrogen diffusion near room temperature

Branz, H. M. and Bullock, J. N. and Asher, S. and Gleskova, Helena and Wagner, S. (1996) On the lack of observable light-induced hydrogen diffusion near room temperature. Journal of Non-Crystalline Solids, 198-200. pp. 441-444. ISSN 0022-3093

Full text not available in this repository. Request a copy from the Strathclyde author

Abstract

A 5-day, high-intensity (9 W cm−2), red-light soak of a-Si:H at 65°C yields no detectable H diffusion in a tracer experiment. A new upper bound to the light-induced diffusion coefficient at a temperature so low that thermal diffusion is negligible is found. The null result found here is incompatible with models in which H emission from SiH bonds is proportional at all times to both the light intensity and the metastable defect creation rate. However, this result is compatible with the model proposed by Santos et al. in which both H emission and metastable defect creation are proportional to the product of the free electron and hole densities. In this model, this result implies that fewer than 500 H emissions occur per created metastable defect.