Electrolyte electroreflectance of HgCdTe at low temperatures

Abstract

Electrolyte electroreflectance measurements in ethanol/lithium perchlorate solutions over the temperature range 300–156 K have been used to derive the temperature dependence of the E1 transition of Hg1−xCdxTe (x=0.23–0.36). The temperature coefficient dE1/dT derived by third derivative line-shape fitting (6.6±0.5×10−4 eV K−1) is considerably higher than values reported previously in the literature.