New Efficient Canal of THz Emission from SiC Natural Superlattices in Conditions of Wannier-Stark Localization

Vladimir Ilich Sankin; Alexander V. Andrianov; Alexey G. Petrov; Sergey Nagalyuk; Pavel P. Shkrebiy; A.O. Zachar'in

doi:10.4028/www.scientific.net/MSF.897.242

Paper Titles

Detection of Crystal Defects in High Doped Epitaxial Layers and Substrates by Photoluminescence
p.222

Exploration of Bulk and Epitaxy Defects in 4H-SiC Using Large Scale Optical Characterization
p.226

Creation and Functionalization of Defects in SiC by Proton Beam Writing
p.233

Influence of n-Type Doping Levels on Carrier Lifetime in 4H-SiC Epitaxial Layers
p.238

New Efficient Canal of THz Emission from SiC Natural Superlattices in Conditions of Wannier-Stark Localization
p.242

Point Defects Investigation of High Energy Proton Irradiated SiC p⁺-i-n Diodes
p.246

New Evidence for the Second Conduction Band in 4H SiC
p.250

On Electrons Mobility in Heavily Nitrogen Doped 4H-SiC
p.254

Depth-Resolved Carrier Lifetime Measurements in 4H-SiC Epilayers Monitoring Carbon Vacancy Elimination
p.258

HomeMaterials Science ForumMaterials Science Forum Vol. 897New Efficient Canal of THz Emission from SiC...

New Efficient Canal of THz Emission from SiC Natural Superlattices in Conditions of Wannier-Stark Localization

Abstract:

The comprehensive study of the terahertz electroluminescence caused by the Bloch oscillations of the electrons in the natural superlattices of 8H-, 6H-SiC with strong electrical field applied along the natural superlattices axis is represented. The electroluminescence spectra become much broader when the bias field exceeds substantially the threshold field of the Bloch oscillations. This spectral broadening can be explained by an appearance of a new spectral line that is much wider and its maximum is localized at higher energy than lines induced by Bloch oscillations. This line has no link with the Bloch oscillations mechanism and it is a result of the presumed changes in the SiC conduction band with complex electron spectrum structure by applied electrical field.

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Materials Science Forum (Volume 897)

Pages:

242-245

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.897.242

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Online since:

May 2017

Authors:

Vladimir Ilich Sankin*, Alexander V. Andrianov, Alexey G. Petrov, Sergey Nagalyuk, Pavel P. Shkrebiy, A.O. Zachar'in

Keywords:

Bloch Oscillations, Natural Superlattice, Terahertz Emission, Transport in High Electrical Fields, Wannier-Stark Localization

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