Enhanced Ce super(3+) emission in B sub(2)O sub(3)-GeO sub(2)-Gd sub(2)O sub(3) scintillating glasses induced by melting temperature

• Published in: Optical materials express Vol. 5; no. 4; pp. 920 - 925
• Main Authors: Sun, Xin-Yuan, Lin, Liang-Wu, Wu, Yun-Tao, Gao, Pan, Xiao, Zhuo-Hao
• Format: Journal Article
• Language: English
• Published: 01.04.2015
• Subjects: Density; Glass; Luminescence; Luminous intensity; Melting; Opacity; Spectroscopy; X-rays
• ISSN: 2159-3930; 2159-3930
• DOI: 10.1364/OME.5.000920

Transparent and colorless Ce super(3+)-activated borogermanate glasses, with the nominal molar composition of 25B sub(2)O sub(3)-40GeO sub(2)-34Gd sub(2)O sub(3)-1CeO sub(2)-0.31Si sub(3)N sub( 4), were synthesized by melt-quenching method at different melting temperature in 1350-1450 [degrees]C region. Both the optical transmittance and X-ray absorption near edge spectroscopy (XANES) results confirm that Ce super(4+) can be effectively reduced to Ce super(3+) ions assisted with 0.31 mol% Si sub(3)N sub(4) in air. The luminescence behaviour of Ce super(3+)-activated borogermanate glasses excited by ultraviolet and X-ray light and to be dependent on the melting temperature, i.e. the luminescence intensity of Ce super(3+) ions in borogermante glass increases remarkably with an increasing in melting temperature. The possible enhanced mechanism is discussed by glass density and energy-dispersive spectroscopy (EDS) results.