Ivasiv Z. Investigation of an influence of a composition gradient and lattice defects on optical, photoelectrical properties and carrier transport in HgCdTe solid solutions and photosensitive structures on their basis.

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0400U002325

Thesis Registration Form

0400U002325.pdf

Applicant for

Specialization

  • 01.04.07 - Фізика твердого тіла

15-09-2000

Specialized Academic Board

К 26.199.01

Essay

The thesis is dedicated to theoretical and experimental investigation of Hg1-xCdxTe epitaxial films with composition gradient and photodiodes on their basis. The values of the band gap gradient were derived from the spectra of optical transmission. The photocurrent in HgCdTe photodiodes and photoresistors prepared on epitaxial films with composition gradient is investigated. The dark current and noise spectra are investigated at zero and small reverse bias voltages in n+-p type Hg1-xCdxTe (x=0.22). The 1/f noise is shown to be correlated with the tunneling current through deep defect states in the band gap.

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