Optical Absorption of Hexagonal Boron Nitride Involving Nitrogen Vacancies and Their Complexes

Sergey Nikolaevich Grinyaev, F. V. Konusov, V. V. Lopatin, L. N. Shiyan

Результат исследований: Материалы для журналаСтатья

12 Цитирования (Scopus)

Аннотация

The pseudopotential and supercell methods are used to study the optical absorption of graphite-like hexagonal boron nitride involving deep levels of nitrogen vacancies and their clusters. The impurity-induced absorption is shown to be mainly related to electron transitions between the states that are antisymmetric with respect to the horizontal plane. Therefore, this absorption is highly anisotropic and is maximum for light waves polarized normally to the hexagonal axis. The optical absorption and photoconductivity spectra before and after neutron irradiation and thermal treatment are interpreted, and the activation energies for the thermoluminescence and conductivity of nitrogen-depleted boron nitride before and after fast-neutron irradiation and vacuum annealing are found.

Язык оригиналаАнглийский
Страницы (с-по)435-441
Число страниц7
ЖурналPhysics of the Solid State
Том46
Номер выпуска3
DOI
СостояниеОпубликовано - 1 мар 2004

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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