Previous abstract|Graphical version|Text version|Next abstract

Session CC - Condensed Matter I.
MIXED session, Friday morning, November 15
Henry Oliver E, Holiday Inn

[CC.03] Properties of Melt Grown CdZnTe Crystals as Related to Their Growth Conditions

Davis Swanson, Kuo-Tong Chen, Henry Chen, Arnold Burger (Center for Photonic Materials and Devices, Department of Physics, Fisk University), Yi-Gao Sha, Ching-Hua Su, Sandor Lehoczky (NASA/Marshall Space Flight Center)

Cadmium Zinc Telluride (CZT) crystals is an important material for optoelectrical applications such as substrates for IR detectors and X-ray and gamma-ray spectrometers. High Pressure Bridgman (HPB) and Vertical Gradient Freeze (VGF) grown crystals were investigated using electrical and optical characterization methods. The resistivity of HPB crystals compared to VGF crystals is seven orders of magnitude higher. This finding seems to be related to the total overpressure above the melt from which they were grown. Low temperature photoluminescence is employed to investigate the correlation of growth defects with electrical properties. Post-growth treatment for restoring deviations from stoichiometry will also be discussed.(The authors at Fisk would like to acknowledge support provided by NASA under grant # NAGW-2925.)

Part C of program listing