Isotope dependence of the indirect energy gap of germanium
- 1 October 1992
- journal article
- Published by IOP Publishing in Semiconductor Science and Technology
- Vol. 7 (10) , 1271-1273
- https://doi.org/10.1088/0268-1242/7/10/010
Abstract
No-phonon luminescence from excitons bound to shallow donors and acceptors in crystalline germanium is found to move to higher energy with increasing mass number A of the germanium at the rate dE/dA=0.35+or-0.02 meV. The authors show that it is possible to predict this shift, to a good approximation, from the temperature dependence of the energy gap and the effect on the lattice parameter of the different isotopes.Keywords
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