Author(s): M.S. Omar, B.M. Omar and F.A. Mahmood
Article publication date: 1999-04-01
Vol. 17 No. 1 (yearly), pp. 59-70.
301
Keywords
temperature, optical properties, energy gaps
Abstract
The temperature dependence of the optical properties was investigated for the chalcopyrite ternary semiconducting compound ZnGeP2. The energy gaps were found to be pseudo direct allowed transitions with gaps of 1.87 eV and 1.94 eV for the two investigated samples . The temperature coefficient of the energy gap was also determined in the temperature range (300-400) K and are found to be -5.18 x 10-4 eV/K and -4.99 x 10-4 eV/K for the above mentioned samples.