Nature of the band gap of polycrystalline β-films
- 15 April 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 45 (15), 8822-8824
- https://doi.org/10.1103/physrevb.45.8822
Abstract
We present experimental evidence for the indirect nature of the β- gap. We furthermore show, by analyzing the temperature dependence of the direct gap by means of a thermodynamic empirical model, that β- exhibits an unusually strong electron-phonon interaction. We finally deduce the electron-hole mobility from our measurements.
Keywords
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