Effect of Fe doping on optical properties of freestanding semi-insulating HVPE GaN:Fe

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Authors	GLADKOV Petar HUMLÍČEK Josef HULICIUS Eduard ŠIMEČEK Tomislav PASKOVA Tanya EVANS Keith
Year of publication	2010
Type	Article in Periodical
Magazine / Source	Journal of crystal growth
MU Faculty or unit	Faculty of Science
Citation
Field	Solid matter physics and magnetism
Keywords	Fe-doping; optical characterization; hydride vapor phase epitaxy; nitrides
Description	Systematic study of optical properties of undoped and Fe-doped substrates grown by hydride vapor phase epitaxy has revealed a strong dependence of the photoluminescence, transmission, reflectivity and ellipsometric spectra on the Fe-doping level. The changes of the near-band-gap transmission, reflectivity and photoluminescence has been observed and ascribed to the absorption introduced by the density of states tails, and the Fe3+ -ions incorporated in the GaN-lattice. Several approaches towards quantifying the Fe-doping level are suggested.
Related projects:	Physical and chemical properties of advanced materials and structures