Title of article :
Uniformity of Cd1 − xZnxTe grown by high-pressure Bridgman
Author/Authors :
Toney، نويسنده , , J.E and Brunett، نويسنده , , B.A and Schlesinger، نويسنده , , T.E and Van Scyoc، نويسنده , , J.M. and James، نويسنده , , R.B and Schieber، نويسنده , , M and Goorsky، نويسنده , , M and Yoon، نويسنده , , J.M. and Eissler، نويسنده , , E and Johnson، نويسنده , , C، نويسنده ,
Pages :
4
From page :
132
To page :
135
Abstract :
We have employed both low-temperature photoluminescence (PL) spectroscopy and high-spatial-resolution, room-temperature PL mapping to determine composition variation in Cd1 − xZnxTe grown by high-pressure Bridgman. Composition variations Δx of approximately 5–10% are observed between tip and heel of an approximately 13 cm long boule, while fluctuations of 1–2% are observed within a single, detector-scale sample. We also show that there are great discrepancies in the calculated zinc concentration, depending on which expression for Eg(x) is chosen from the literature. We have performed high-resolution, triaxial X-ray analysis on selected samples to determine which of the published relations is most accurate for our material. We have also examined the relationship between the low-temperature PL spectrum and detector performance, and found that the line width of the donor-bound-exciton peak can be used as a predictor of performance.
Journal title :
Astroparticle Physics
Record number :
1999215
Link To Document :
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