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High-resolution, background-free spectroscopy of shallow-impurity transitions in semiconductors with a terahertz photomixer source

Wienold, Martin and Pavlov, Sergey and Abrosimov, N. V. and Hübers, Heinz-Wilhelm (2019) High-resolution, background-free spectroscopy of shallow-impurity transitions in semiconductors with a terahertz photomixer source. Applied Physics Letters, 114, 092103. American Institute of Physics (AIP). DOI: 10.1063/1.5081030 ISSN 0003-6951

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Official URL: https://doi.org/10.1063/1.5081030

Abstract

We report on a method which enables background-free spectroscopy of the narrow absorption lines of shallow impurity transitions in low-doped and high-purity semiconductors, providing a much better spectral resolution than standard Fourier-transform spectrometers. To achieve this, we combined high-resolution continuous-wave terahertz spectroscopy based on a photomixer system with a bandgap excitation scheme for varying the concentration of neutral impurities. For the minority doping species, the lifetime of the excited states can be directly inferred from such a measurement by analyzing the line shape with respect to the width of the lifetime-related Lorentzian contribution.

Item URL in elib:https://elib.dlr.de/127294/
Document Type:Article
Title:High-resolution, background-free spectroscopy of shallow-impurity transitions in semiconductors with a terahertz photomixer source
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wienold, MartinMartin.Wienold (at) dlr.deUNSPECIFIED
Pavlov, SergeySergeij.Pavlov (at) dlr.deUNSPECIFIED
Abrosimov, N. V.Leibniz-Institut für Kristallzüchtung (IKZ), BerlinUNSPECIFIED
Hübers, Heinz-WilhelmHeinz-Wilhelm.Huebers (at) dlr.deUNSPECIFIED
Date:8 March 2019
Journal or Publication Title:Applied Physics Letters
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:114
DOI :10.1063/1.5081030
Page Range:092103
Publisher:American Institute of Physics (AIP)
ISSN:0003-6951
Status:Published
Keywords:semiconductor spectroscopy; shallow-impurity transitions; photomixer sources
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems
Deposited By: Wienold, Martin
Deposited On:30 Apr 2019 08:54
Last Modified:30 Apr 2019 08:54

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