TY - JOUR
T1 - Dielectric and pyroelectric properties of ordered CdZnTe layers grown by MOCVD
AU - Chack, A.
AU - Cohen, K.
AU - Stolyarova, S.
AU - Nemirovsky, Y.
AU - Beserman, R.
AU - Weil, R.
N1 - Funding Information:
We acknowledge with thanks useful discussions with Dr. V. Garber. This research was supported in part by a grant from the Israel Science Foundation, and by the Gilady Program.
PY - 1999/3
Y1 - 1999/3
N2 - Cd1-xZnxTe (0.1 ≤ x ≤ 0.86) layers were epitaxially deposited on (1 0 0) CdTe and on Cd0.96Zn0.04Te substrates by MOCVD, and some of their electrical and optical properties were investigated. The dielectric constant as a function of temperature was found to have a peak at a Curie temperature. At this same temperature the slope of the resistivity showed a sharp change. It was found that the layers were pyroelectric. The pyroelectric coefficient varied from 2.3 × 10-11 to 5.1 × 10-10 C K-1 m-2, depending on Zn content (x) and growth conditions. It was observed that the Curie temperature shifts in the direction of higher temperatures when the Zn content of the layers increases. The observed results are consistent with the results obtained on CdZnTe monocrystals. A correlation was observed between the pyroelectric properties of CdZnTe and valence band splitting effect, measured by the photoluminescence method at 77 K.
AB - Cd1-xZnxTe (0.1 ≤ x ≤ 0.86) layers were epitaxially deposited on (1 0 0) CdTe and on Cd0.96Zn0.04Te substrates by MOCVD, and some of their electrical and optical properties were investigated. The dielectric constant as a function of temperature was found to have a peak at a Curie temperature. At this same temperature the slope of the resistivity showed a sharp change. It was found that the layers were pyroelectric. The pyroelectric coefficient varied from 2.3 × 10-11 to 5.1 × 10-10 C K-1 m-2, depending on Zn content (x) and growth conditions. It was observed that the Curie temperature shifts in the direction of higher temperatures when the Zn content of the layers increases. The observed results are consistent with the results obtained on CdZnTe monocrystals. A correlation was observed between the pyroelectric properties of CdZnTe and valence band splitting effect, measured by the photoluminescence method at 77 K.
UR - http://www.scopus.com/inward/record.url?scp=4243742010&partnerID=8YFLogxK
U2 - 10.1016/S0022-0248(98)01202-0
DO - 10.1016/S0022-0248(98)01202-0
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AN - SCOPUS:4243742010
SN - 0022-0248
VL - 198-199
SP - 1179
EP - 1183
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
IS - pt 2
T2 - Proceedings of the 1998 10th International Conference on Vapor Growth and Epitaxy and Specialist Workshops on Crystal Growth, ICVGE-10
Y2 - 26 July 1998 through 31 July 1998
ER -