5 papers · 1 filter
Accessibility of doping ranges of semiconductors by terahertz spectroscopy
Joshua Hennig, Jens Klier, Stefan Duran +4
While established semiconductor measurement techniques such as four-point probe or capacitance-voltage measurements require a physical contact to the material, terahertz spectrosco…
Simultaneous Charge Carrier Density Mapping of SiC Epilayers and Substrates with Terahertz Time-Domain Spectroscopy
Joshua Hennig, Jens Klier, Stefan Duran +9
With the growing demand for efficient power electronics, SiC-based devices are progressively becoming more relevant. In contrast to established methods such as the mercury capacita…
Wide-range resistivity characterization of semiconductors with terahertz time-domain spectroscopy
Joshua Hennig, Jens Klier, Stefan Duran +9
Resistivity is one of the most important characteristics in the semiconductor industry. The most common way to measure resistivity is the four-point probe method, which requires ph…
Sample thickness measurements by phase-sensitive terahertz upconversion detection
Tobias Pfeiffer, Jens Klier, Georg von Freymann +1
Nonlinear frequency conversion provides an elegant method to detect photons in a spectral range which differs from the pump wavelength, making it highly attractive for photons with…
Quantum-inspired terahertz spectroscopy with visible photons
Mirco Kutas, Björn Haase, Jens Klier +2
Terahertz spectroscopy allows for identifying different isomers of materials, for drug discrimination as well as for detecting hazardous substances. As many dielectric materials us…