Journal of Crystal Growth, Vol.386, 43-46, 2014
Growth of CdTexSe1-x from a Te-rich solution for applications in radiation detection
We grew CdTexSe1-x (CTS) crystals from a Te-rich solution by using the traveling heater method (THM). The average size distribution and concentration of Te inclusions/precipitates in these as-grown samples were measured to be similar to 7 x 10(4) cm(-3), which is much lower than values typical for the present state-of-the-art commercial CdZnTe (CZT) material. Their low-temperature photoluminescence measurement indicates high quality of the material; however the resistivity obtained via I-V curve measurements was similar to 5 x 10(8) Omega-cm, which is low in comparison to that required for gamma detectors. A well resolved alpha response peak can be detected for both planar- and hemispherical detector geometry. The (mu tau)(e), value for our as grown sample at room temperature was found to be similar to 4 x 10(-3) cm(2)/V. (C) 2013 Elsevier B.V. All rights reserved.