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Thermal properties and optical band gap of a novel high UV transmitting glass

ZHIWEI LUO1, ANXIAN LU1,*

Affiliation

  1. School of Materials Science and Engineering, Central South University, Changsha 410083, People’s Republic of China

Abstract

High UV transmitting Glasses with c omposition 10 SrO 10 ZnO 33.3P 2 O 5 xB 2 O 3 --(46.7 x)SiO 2 have been prepared using the normal melt quench technique. Glass transition temperatures ( T g ) and thermal expansion coefficients CTE ) were determined using thermo mechanical analysis The optical studies in the UV-visible region for these glasses show different cut-off and transmitting window depending on composition composition. Increasing the B2O3 content to 16.67 mole% in the glasses can enhance the UV transmittance to greater than 60% at 200 nm. The values of both of the optical band gap (Eopt) and Urbach energy (ΔE) were calculated from optical absorption data. Generally, a novel high UV-transmitting glass was obtained successfully, and it is possible to produce glasses of high UV-transmittance using common commercial reagents at a relatively lowlower cost..

Keywords

UV-transmitting glass, Thermal properties, Optical materials, Optical gap energy.

Citation

ZHIWEI LUO, ANXIAN LU, Thermal properties and optical band gap of a novel high UV transmitting glass, Optoelectronics and Advanced Materials - Rapid Communications, 6, 11-12, November-December 2012, pp.993-996 (2012).

Submitted at: Aug. 17, 2012

Accepted at: Oct. 30, 2012