Composition-dependence of photoconduction band gap in cadmium zinc phosphate glasses

1982 ◽  
Vol 17 (12) ◽  
pp. 3653-3655 ◽  
Author(s):  
Fateh Mohammad Nazar ◽  
Mohammad Aslam Ghauri
Keyword(s):  
Band Gap ◽  
Composition Dependence ◽  
Zinc Phosphate ◽  
Phosphate Glasses ◽  
Cadmium Zinc

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

2006 ◽  
Vol 20 (26) ◽  
pp. 1637-1643
Author(s):  
M. ALTAF ◽  
M. A. CHAUDHRY ◽  
M. TARIQ BHATTI
Keyword(s):  
Band Gap ◽  
Optical Band Gap ◽  
Zinc Phosphate ◽  
Mass Density ◽  
Band Gap Energy ◽  
Phosphate Glasses ◽  
Exponential Dependence ◽  
Amorphous Nature ◽  
Sharp Edges ◽  
Band Tailing

Zinc-phosphate glasses with the addition of B 2 O 3 were prepared by using the melt quench technique. These glasses had a mol% composition of 30 ZnO -x B 2 O 3 - (70-x) P 2 O 5. The quantity x had values of 10–40 mol%. The mass density of these glasses was found to be in the range of 2.4912–3.0142 g/cm3. The oxygen packing density and molar volume were estimated to lie in the range 192.385–286.026 g-atom/liter and 46.78–31.46 cm3 respectively. The absorption spectra of these glasses were recorded in the range of 190 to 1100 nm. No sharp edges were found in the optical spectra, which confirms the amorphous nature of these glasses. The optical band gap energies were determined to be in the range of 2.40–3.00 eV. A decreasing behavior in optical band gap energy was seen due to the increasing concentration of B 2 O 3. The extent of band tailing was worked out from the Urbach plots, which showed an exponential dependence of absorption coefficients on photon energies.

The optical absorption study of cadmium-zinc phosphate glasses

1995 ◽  
Vol 14 (14) ◽  
pp. 975-977 ◽  
Author(s):  
M. Ashr Chaudhry ◽  
M. Shakeel Bilal ◽  
M. Altaf ◽  
Ashfaq Ahmed ◽  
Anwar Manzoor Rana
Keyword(s):  
Optical Absorption ◽  
Zinc Phosphate ◽  
Phosphate Glasses ◽  
Absorption Study ◽  
Optical Absorption Study ◽  
Cadmium Zinc

High field conductivity in cadmium zinc phosphate glasses

1984 ◽  
Vol 56 (1) ◽  
pp. 25-30 ◽  
Author(s):  
MOHAMMAD ASLAM GHAURI ◽  
FATEH MOHAMMAD NAZAR
Keyword(s):  
High Field ◽  
Zinc Phosphate ◽  
Phosphate Glasses ◽  
Cadmium Zinc

EFFECT OF ZINC OXIDE ON THE BAND GAP OF CADMIUM–ZINC–PHOSPHATE GLASSES

1994 ◽  
Vol 08 (07) ◽  
pp. 461-467 ◽  
Author(s):  
M. SHAKEEL BILAL ◽  
M. ASHFAQ AHMED ◽  
M. ASHRAF CHAUDHRY ◽  
M. ALTAF
Keyword(s):  
Photon Energy ◽  
Zinc Phosphate ◽  
Wavelength Region ◽  
Phosphate Glasses ◽  
Band Gaps ◽  
Exponential Dependence ◽  
Optical Band Gaps ◽  
Zinc Phosphate Glass ◽  
Uv Visible ◽  
Cadmium Zinc

The fundamental absorption edges of cadmium–zinc–phosphate glass samples were measured in the UV visible wavelength region of the spectrum by photoabsorption method. It is found that the optical band gaps of these glasses are composition-dependent and occur at a photon energy in the range 2.85–3.33 eV. The value of the optical band gaps enhances with ZnO content. The absorption coefficient depicts an exponential dependence on photon energy for the glass samples reported in this communication.

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