Excitation‐Power Dependence of the Near Band‐Edge PL Spectra of CdMnTe with High Mn Concentrations

Abstract

Temperature and excitation power dependences of photoluminescence (PL) measurements were studied for the CdMnTe crystal grown by the vertical Bridgman method. The near band‐edge and intra‐Mn2+Mn2+ emissions were investigated as a function of temperature. The observed band‐edge peak of the PL spectrum showed a clear blue‐shift with decreasing temperature. However, the peak energy of the intra‐Mn2+Mn2+ transition did not decrease monotonically with changing temperature, as can be seen above 70 K. With increasing the excitation power, the intensity of the emission peak was increased.