Abstract
Photoreflectance spectra have been measured to determine the E1 and E1+1 energies in ZnTe at temperatures T between 77 and 300 K using an Ar+-ion laser as a modulation light source. The measured photoreflectance spectra can be successfully explained by an excitonic line shape. The temperature dependence of the E1 and E1+1 critical-point parameters (energy, amplitude and broadening parameter) have been analysed using the Varshni equation and an empirical expression of the Bose-Einstein type.A comment correcting this article has been published: Molina, Espinosa-Luna and Adachi 2004 J. Phys. D: Appl. Phys. 37 2047
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