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- 1. J. Phys. Chem. Solids 64, 1027-1035 (2003) , “Optical absorption and fluorescence properties of Er3+ ion in MO–WO3–P2O5 glasses”, P. Subbalakshmi , N. VeeraiahTungsten phosphate glasses mixed with the three different modifier oxides, viz. PbO, ZnO and CaO doped with Er2O3 were prepared. The glasses were characterised by X-ray diffraction spectra, electron microscopy and differential thermal analysis. Optical absorption and photoluminescence spectra of... (Read more)
- 2. Physica B 308-310, 730 (2001) , “Deep level defects in sublimation-grown 6H silicon carbide investigated by DLTS and EPR”, K. Irmscher, I. Pintilie, L. Pintilie and D. Schulz6H-SiC bulk single crystals grown by physical vapor transport (PVT) were investigated by deep-level transient spectroscopy (DLTS) and electron paramagnetic resonance (EPR). One of the observed deep level defects was identified as isolated tungsten on Si sites by EPR. The electron spin of could be... (Read more)
- 3. Phys. Rev. B 62, 12888-12895 (2000) , “Tungsten in silicon carbide:?Band-gap states and their polytype dependence”, N. Achtziger, G. Pasold, R. Sielemann, C. H?lsen, J. Grillenberger, and W. WitthuhnBand-gap states of tungsten in silicon carbide (polytypes 4H, 6H, and 15R) are investigated by deep-level transient spectroscopy (DLTS) and admittance spectroscopy on n-type SiC. Doping with W is done by ion implantation and annealing. To establish a definite chemical identification of band-gap... (Read more)
- 4. J. Appl. Phys. 70, 5401-5403 (1991) , “Deep-level transient spectroscopy on p-type silicon crystals containing tungsten impurities”, Toshio Ando, Seiichi Isomae, and Chusuke MunakataTungsten deep levels are investigated to clarify energies, which are inconsistent among current research. Hole traps located at 0.41 eV above the top of the valence band are determined to be due to tungsten impurities. The concentration of hole traps is almost one-third of that of the tungsten... (Read more)
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Updated at 2010-07-20 16:50:39
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