Gasan-zade S. Electronic phenomena in narrow-gap and gapless semiconductor alloys due to changes of the energy band structure

Українська версія

Thesis for the degree of Doctor of Science (DSc)

State registration number

0504U000220

Applicant for

Specialization

  • 01.04.10 - Фізика напівпровідників і діелектриків

23-04-2004

Specialized Academic Board

Д 26.199.02

V. Lashkaryov Institute of semiconductor physics

Essay

In the thesis the results of an investigation of the peculiarities of the electronic phenomena in the narrow-gap and gapless semiconductors are represented. The peculiariries are mainly associated with transformation of the energy band structure of semiconductor crystals due to uniaxial elastic deformation, quantizing magnetic field application, anodically oxidized surface perturbation. The original experimental results are obtained: the metal-insulator-metal transition in uniaxially strained gapless CdxHg1-xTe (x"0.16), the sharp increasing of the microwave photoconductivity of gapless CdxHg1-xTe crystals when an energy gap is opened, far infrared stimulated radiation in uniaxially compressed CdxHg1-xTe (x"0.14), the essential enhancement of quantum efficiency of narrow-gap semiconductor infrared emission due to changes of interband recombination mechanisms by uniaxial elastic deformation. The results could be used for an enhancing efficiency of the high sensitive photodetectors and the infrared radiation sources.

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