THE BAND GAP ESTIMATION OF ZINC MANGANESE PHOSPHATE GLASSES
| Autor: | M. A. Ghauri, Saadat Anwar Siddiqi, M. J. S. Baig |
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| Rok vydání: | 2008 |
| Předmět: |
Range (particle radiation)
Materials science Band gap business.industry Analytical chemistry Spectral density chemistry.chemical_element Statistical and Nonlinear Physics Zinc Condensed Matter Physics chemistry Electric field Optoelectronics Direct and indirect band gaps business Electronic band structure Voltage |
| Zdroj: | Modern Physics Letters B. 22:1265-1272 |
| ISSN: | 1793-6640 0217-9849 |
| Popis: | Zinc manganese phosphate glasses ( ZnO - MnO - P 2 O 5) of different compositions are synthesized. The optical band gaps are measured in the UV-VIS region. Photoconduction measurements are also made in the spectral energy range 1.5–6.2 eV. At various applied electric fields, the values of the energy band gaps have been deduced from the spectral dependence curves. Furthermore, the band gaps at zero applied voltage were also obtained for different compositions. The charge transport mechanism in these glasses is studied under the Mott's model. |
| Databáze: | OpenAIRE |
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