Residual stresses and piezoelectric properties of the HgCdTe – based compound heterostructures under the anisotropic deformation restriction

• Опубліковано в: : Semiconductor Physics Quantum Electronics & Optoelectronics
• Дата: 2012
• Автор: Smirnov, A. B.
• Формат: Стаття
• Мова: English
• Опубліковано: Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України 2012
• Онлайн доступ: https://nasplib.isofts.kiev.ua/handle/123456789/118306
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Residual stresses and piezoelectric properties of the HgCdTe – based compound heterostructures under the anisotropic deformation restriction/ A. B. Smirnov // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2012. — Т. 15, № 2. — С. 170-175. — Бібліогр.: 22 назв. — англ.

Narrow-gap mercury cadmium telluride thin films grown by MBE methods onto various substrates (HgCdTe/Si, HgCdTe/GaAs) were investigated as a piezoelectric heterostructure for IR detection. Mechanical stresses at the layer-substrate interface were analyzed. It was determined that for [310] oriented MCT-based structures under the anisotropic restriction of the deformation the nonzero shear components of the strain tensor arise and stress induced piezoelectric polarization is generated. Existence of the built-in electric field in the strained MCT-based heterostructure results in the spatial separation of the nonequilibrium carriers and the possibility of the room temperature detection of the IR radiation is realized.