Nad' Y. Spectroscopy of metastable states in vitreous semiconductors based recording media.

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0402U002409

Thesis Registration Form

0402U002409.pdf

Applicant for

Specialization

  • 01.04.10 - Фізика напівпровідників і діелектриків

06-06-2002

Specialized Academic Board

K61.051.01

Essay

The dissertation is devoted to gap-state spectroscopy in disordered semiconductors. A new direction in the physics of non-crystalline materials is elaborated, which based on the concept of metastable states relaxation in amorphous chalcogenides. The electronic transformations induced by addition of Sb on band-gap states are considered for low-dimensional non-crystalline selenides. There is established by xerographic and photocurrent transient spectroscopy that metastable states of structural defects at sensibilisation transformed to an electrically active centres and radically change the processes of carrier drift, localisation and emission. The methods of influence on relaxation effects and recording materials based on them are proposed.

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