Crystals Cd₁₋x ZnxTe – a promising material for non-cryogenic semiconductor detectors: preparations, structure defectness and electrophysical properties

• Published in: Semiconductor Physics Quantum Electronics & Optoelectronics
• Date: 1999
• Main Authors: Atroshchenko, L.V., Galkin, S.N., Galchinetskii, L.P., Lalayants, A.I., Rybalka, I.A., Ryzhikov, V.D., Silin, V.I., Starzhinskii, N.G.
• Format: Article
• Language: English
• Published: Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України 1999
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/120259
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Crystals Cd₁₋x ZnxTe – a promising material for non-cryogenic semiconductor detectors: preparations, structure defectness and electrophysical properties / L.V. Atroshchenko, S.N. Galkin, L.P. Gal’chinetskii, A.I. Lalayants, I.A. Rybalka, V.D. Ryzhikov, V.I. Silin, N.G. Starzhinskii // Semiconductor Physics Quantum Electronics & Optoelectronics. — 1999. — Т. 2, № 4. — С. 81-85. — Бібліогр.: 5 назв. — англ.

Relationship between preparation conditions of the raw charge, crucible material, growth regimes and structure defectness and electrophysical properties of crystals Cd₁₋x ZnxTe has been studied. The crystals were grown both from the raw material which had been pre-synthesized in quartz ampoules and from the raw material synthesized from the elements directly in the growth furnace. It is shown that the best values of electric resistivity ρ (up to 10¹¹ Ohm⋅cm) and sensitivity to X-ray and gamma-radiation are obtained for crystals grown in crucibles of highly pure coal-graphite material from the pre-synthesized raw charge. Correlation has been established between values of ρ and crystal defectness: decrease of dislocation density by 10⁴ times led to 10⁷ times higher values of resistivity.
 Concentration of dislocation etching pits regularly decreased with higher purity of the raw material and optimization of crystal preparation technology.