Dielectric function spectra and optical transitions in thallium bromide crystals for radiation detectors


Kitano R., Shim Y., Onodera T., Shoji T., Mochizuki K., MƏMMƏDOV N., ...daha çox

Journal of Vacuum Science and Technology B: Nanotechnology and Microelectronics, vol.37, no.6, 2019 (SCI-Expanded, Scopus) identifier

Qısa məlumat

Dielectric function spectra of purified thallium bromide crystals grown by the Bridgman method were studied over the photon range of 1.5-5.4 eV at room temperature. In addition, density functional theory (DFT)-based calculations of the electronic band structure were performed. Interband optical transitions associated with the obtained dielectric function were determined using standard critical point analysis. The electronic bands involved in each particular interband transition in the accessed photon energy range were identified within the calculated band structure.