Positron lifetime spectroscopy with optical excitation: a case study of natural diamond

Details Positron lifetime spectroscopy with optical excitation: a case study of natural diamond Positron lifetime spectroscopy with optical excitation: a case study of natural diamond

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012njph...14c5023m&link_type=abstract

New Journal of Physics, Volume 14, Issue 3, pp. 035023 (2012).

Physics

Scientific paper

In this paper, we report positron lifetime results obtained under high-power steady-state and transient optical excitation. We present a model for analysing the results. The method has been applied to vacancy clusters in natural diamond, for which we self-consistently analyse optoelectronic constants such as optical absorption cross-section and hole recombination cross-section. The temperature dependences of transient and steady-state measurements are studied, suggesting the possibility of analysing the positron trapping to extended defects and vacancy clusters in semiconductors.

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