Structural and luminescence properties of Dy3+ ion in strontium lithium bismuth borate glasses

Effect of Bi2O3 content on the optical band gap, density and electrical conductivity of MO·Bi2O3·B2O3 (M = Ba, Sr) glasses

Optical properties of lead borate glasses containing Dy3+ ions were examined using absorption and luminescence measurements and theoretical calculations based on the Judd–Ofelt framework and the Inokuti–Hirayama model. The luminescence spectra show two characteristic bands at 480 and 573 nm, which are due to 4F9/2–6H15/2 (blue) and 4F9/2–6H13/2 (yellow) transitions of trivalent Dy3+ ions. The yellow/blue luminescence and its decay were analyzed as a function of activator concentration.

http://iopscience.iop.org/article/10.1088/0953-8984/21/28/285101/pdf

Optical properties of lead borate glasses containing Dy3+ ions

Spectroscopic investigation on thermally stable Dy3+ doped zinc phosphate glasses for white light emitting diodes

Influence of rare earth oxide (Nd2O3, Er2O3) addition on structure and glass properties has been investigated in PbO–B2O3–Al2O3–WO3 system. With an increasing of rare earth concentration, intensity of OH band drastically decreases and IR transparency is slightly shifted to the longer wavelengths. The ErBO3 crystalline phase has been identified basing on X-ray diffraction analysis. In opposite to the neodymium oxide, the erbium oxide plays the role as glass-modifier and influences on BO3 ↔ BO4 conversion, what was stated by infrared spectroscopy.

Structure and properties of rare earth-doped lead borate glasses

Effect of Bi2O3 on EPR, optical transmission and DC conductivity of vanadyl doped alkali bismuth borate glasses

Mixed alkali effect in optical properties of lithium–potassium bismuth borate glass system

Study of EPR, optical properties and electrical conductivity of vanadyl doped Bi2O3·PbO·B2O3 glasses

The optical absorption spectra of the glasses with composition xBi2O3·(30 − x)R2O·70B2O3 (R˭Li, Na, K) and xBi2O3·(70 − x)B2O3·30Li2O (0 ≤ x ≤ 20) have been recorded in the wavelength range 350–650 nm. The glass samples were prepared by the normal melt–quench technique. The fundamental absorption edge for all the series of glasses is analyzed using the theory of Davis and Mott. The position of absorption edges and the values of optical band gap are dependent on the mol% of Bi2O3. The absorption in these glasses is associated with indirect transitions. The values of Urbach's energy and band tailing parameters are reported. The two photon absorption coefficient, β, in these glasses has also been estimated from the optical band gap and its value ranges from 1.3 to 11.6 cm/GW. The relationship between β and glass composition has also been discussed in terms of the electronic structure of the glass system.

Optical band gap studies and estimation of two photon absorption coefficient in alkali bismuth borate glasses

A new family of glasses based on Bi2O3 was found in the systems xZnO · (0.30 − x)M2O · 0.70Bi2O3 (M = Li, Na) in the range 0.00 ≤ x ≤ 0.20 containing 2.0 mol% of V2O5. Density, molar volume, optical band gap and dc conductivity of these glasses have been investigated. The position of the absorption edge and hence the value of the optical band gap has been reported.

P. S. Gahlot

Papers

Effect of Bi2O3 on EPR, optical transmission and DC conductivity of vanadyl doped alkali bismuth borate glasses

Mixed alkali effect in optical properties of lithium–potassium bismuth borate glass system

Study of EPR, optical properties and electrical conductivity of vanadyl doped Bi2O3·PbO·B2O3 glasses

Optical band gap studies and estimation of two photon absorption coefficient in alkali bismuth borate glasses

Influence of ZnO on optical properties and dc conductivity of vanadyl-doped alkali bismuthate glasses