One-photon band gap engineering of borate glass doped with ZnO for photonics applications

Journal Article · Sun Apr 01 04:00:00 EDT 2012 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3698623· OSTI ID:22036839

Abdel-Baki, Manal ^[1]; Abdel-Wahab, Fathy A; El-Diasty, Fouad ^[2]

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1. Glass Department, National Research Centre, Dokki 12311 Giza (Egypt)
2. Physics Department, Faculty of Science, Ain Shams University, Abbasia, 11566 Cairo (Egypt)

Lithium tungsten borate glass of the composition (0.56-x)B{sub 2}O{sub 3}-0.4Li{sub 2}O-xZnO-0.04WO{sub 3} (0 {<=}x{<=} 0.1 mol. %) is prepared for photonics applications. The glass is doped with ZnO to tune the glass absorption characteristics in a wide spectrum range (200-2500 nm). Chemical bond approach, including chemical structure, electronegativity, bond ionicity, nearest-neighbor coordination, and other chemical bonding aspect, is used to analyze and to explain the obtained glass properties such as: transmittance, absorption, electronic structure parameters (bandgap, Fermi level, and Urbach exciton-phonon coupling), Wannier free excitons excitation (applying Elliott's model), and two-photon absorption coefficient as a result of replacement of B{sub 2}O{sub 3} by ZnO.

• OSTI ID: 22036839
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 7 Vol. 111; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BORON OXIDES
CHEMICAL BONDS
COUPLING
DOPED MATERIALS
ELECTRONEGATIVITY
ELECTRONIC STRUCTURE
ENERGY GAP
EXCITATION
EXCITONS
FERMI LEVEL
GLASS
INFRARED SPECTRA
LITHIUM OXIDES
MULTI-PHOTON PROCESSES
PHONONS
PHOTONS
TUNGSTEN OXIDES
ULTRAVIOLET SPECTRA
VISIBLE SPECTRA
ZINC OXIDES