Evaluation of crystalline quality of traveling heater method (THM) grown Cd_0.9Zn_0.1Te_0.98Se_0.02 crystals

Because of its excellent opto-electronic properties, CdZnTe (CZT) has been the material choice for x- and gamma-ray detectors operable at room temperature. CZT is leading commercially available room-temperature radiation detector today. Although much progress made over past three decades, today's crystals still face certain challenges, especially presence performance-limiting materials defects associated relatively high production cost. In this regard, CdxZn1?xTeySe1?y (CZTS) emerging as a next-generation compound semiconductor, which overcomes some limitations technology stated applications. Here, we conducted study to evaluate crystalline quality traveling heater method grown CZTS with an optimized alloy composition, i.e., Cd0.9Zn0.1Te0.98Se0.02. The as-grown samples were evaluated by low-temperature photoluminescence (PL) spectroscopy high-resolution x-ray diffraction using synchrotron light source Brookhaven National Laboratory. full width half maximum both PL rocking curves was observed be broadened due lattice disorder quaternary compound, eventually degrading quality. This consistent density functional theory calculations.