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International Journal of Optics
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International Journal of Optics
/
2015
/
Article
/
Tab 1
/
Research Article
Optical Characterization of Zinc Modified Bismuth Silicate Glasses
Table 1
Cut-off wavelength (
), energy band gap (
), and Urbach energy (
) of glasses of 40Si
Zn
)Bi
2
O
3
for different values of
.
Parameter
= 0
= 5
= 10
= 15
= 20
= 25
= 30
= 35
(nm)
434
432
430
430
430
427
427
415
(eV)
2.79
2.88
2.91
2.92
2.94
2.95
2.96
3.00
(eV)
0.22
0.19
0.24
0.19
0.24
0.21
0.22
0.20