Physical and optical absorption studies on xNa2O−(40−x)Bi2O3−20CdO−40B2O3 glasses

Physical and optical absorption studies on xNa2O−(40−x)Bi2O3−20CdO−40B2O3 glasses

Glasses with composition xNa2O−(40−x)Bi2O3−20CdO−40B2O3 where (0 ≤ x ≤ 40) have been prepared using melt quench technique. Optical absorption spectra of the pure glasses reveled that the cutoff wave length decreases and optical band gap (Eopt) increases where as Urbach energy (ΔE) decreases with inc...

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Hauptverfasser: Vijaya, Kumar R, Rajashekar, Reddy V, Srinu, Naik S, Siva, Kumar K
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Absorption spectra
Bismuth oxides
Bismuth trioxide
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Zusammenfassung:Glasses with composition xNa2O−(40−x)Bi2O3−20CdO−40B2O3 where (0 ≤ x ≤ 40) have been prepared using melt quench technique. Optical absorption spectra of the pure glasses reveled that the cutoff wave length decreases and optical band gap (Eopt) increases where as Urbach energy (ΔE) decreases with increase in Na2O content. The Eopt values of these glasses are found to be in the range 2.818-3.217 eV where as the values of ΔE are in the range 0.23-0.35 eV.
ISSN:0094-243X
1551-7616