Determination of the optical bandgap of amorphous silicon
- 1 April 1982
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine Part B
- Vol. 45 (4) , 377-383
- https://doi.org/10.1080/01418638208227445
Abstract
The optical bandgap of glow-discharge and sputter-deposited a-Si has been deduced from measurements of the absorption coefficient α using a linear extrapolation of (αhvn)1/3 as a function of the photon energy h v. The exponent 1/3 is used instead of 1/2, resulting in a much better fit to the data. The influence of the method of extrapolation on the resulting value for the optical bandgap has been assessed.Keywords
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