Band gap in cadmium zinc phosphate glass

The Band Gap Estimation of Zinc Manganese Phosphate Glasses

“…The explanation for the slow variation of E photo with the applied voltage may be due to the fact that as the field increases, more and more localized states, deeper in the energy band gap, may release their charge carriers under optical excitation. Contrastingly, in a separate paper, Ghauri et al 22 described that band gap, measured by photoconduction is nearly the same as obtained in optical absorption, E photo ≈ E opt .…”

“…8,[22][23][24][25][26] Using photoconduction measurements, it was observed that the band gap was electric field-dependent. 8 An addition of ZnO in Cd-phosphate glasses resulted in decreasing the band gap value whereas in another similar study, an addition of V 2 O 5 again in Cd-phosphate did not show any significant change in E photo .…”

“…8 An addition of ZnO in Cd-phosphate glasses resulted in decreasing the band gap value whereas in another similar study, an addition of V 2 O 5 again in Cd-phosphate did not show any significant change in E photo . 22 Literature survey does not provide any information on the study of ZnO-MnO-P 2 O 5 glasses for their band gap measurements. However, a dependence of the band gap value on both the applied electric field and the MnO content in Mn-phosphate glasses has already been reported.…”

EFFECT OF B2O3 ON PHYSICAL AND OPTICAL PROPERTIES OF ZINC PHOSPHATE GLASSES

“…7 The variation of the optical band gap of phosphate glasses has been studied as a function of composition, 7-13 temperature 14 and applied electric field. 15,16 Most of the published work is concerned with optical properties as well as electrical conduction of phosphate glasses. 7-17 However, the optical properties of zincboro-phosphate glasses have not gained much attention to the best of our knowledge.…”