Silicon dioxide amorphous films are the key insulators in silicon integrated circuits. The
physical properties of silicon dioxide are determined by the electronic structure of this …

Series of ternary glass systems namely, Na2O, B2O3, and RO (R= Ba or Mg) doped with
TiO2 are synthesized. The present glasses are dictated by requirement for a small refractive …

Sažetak The paper is dedicated to the 60th anniversary of the Urbach rule. The general
regularities of the Urbach rule revealed in crystalline and amorphous solids as well as the …

A unifying element that links the apparently diverse phenomena observed in optical
processes is the dielectric dispersion of matter. It describes the response of matter to …

The optical absorption of point-defect-free SiO 2 glass in the vacuum ultraviolet region is
primarily controlled by the concentrations of three-and four-membered ring structures …

Direct evidence for a size effect in self-trapped exciton (STE) photoluminescence (PL) from
silica-based nanoscale materials as compared with bulk type-III fused silica is obtained. Two …

Reproduction of the band gaps of semiconductors and insulators represents a well-known
problem for standard DFT approaches based on semilocal functionals. The problem can be …

One of the major driving forces for the development of new glasses is the demand for high
optical non-linearity with reduced cost and a higher damage resistance. Oxide glasses with …

In this paper, excitonic properties of crystalline and glassy SiO 2 are reviewed. Experimental
spectroscopic data (optical absorption and reflection spectra, as well as spectra of …

We discuss several low-energy backgrounds to sub-GeV dark-matter searches, which arise
from high-energy particles of cosmic or radioactive origin that interact with detector …