A5010957959- Advanced Thermoelectric Materials and Devices
- Thermal properties of materials
- Surface and Thin Film Phenomena
- Thermal Radiation and Cooling Technologies
- Thin-Film Transistor Technologies
- Silicon and Solar Cell Technologies
- Metamaterials and Metasurfaces Applications
- Transition Metal Oxide Nanomaterials
- Advanced optical system design
- Silicon Nanostructures and Photoluminescence
Technical University of Denmark
2018-2023
Hot Disk (Sweden)
2021
IMEC
2021
Aarhus University
2021
Ørsted (Denmark)
2018
To develop materials with higher thermoelectric efficiency, a comprehensive characterization of material properties on the relevant spatial scales is pertinent. In this study, we new method based micro four-point probe (M4PP) to determine thermal diffusivity bulk using phase delay second harmonic voltage. The demonstrated two i.e. skutterudite and bismuth telluride. Individual measurements telluride are characterized by precision better than 9% 12%, mean diffusivities 1.87 ± 0.17 mm2/s 1.14...
Electrical four-terminal sensing at (sub-)micrometer scales enables the characterization of key electromagnetic properties within semiconductor industry, including materials’ resistivity, Hall mobility/carrier density, and magnetoresistance. However, as devices’ critical dimensions continue to shrink, significant over/underestimation due a by-product Joule heating probed volume becomes increasingly common. Here, we demonstrate how self-heating effects can be quantified compensated for via 3ω...
Abstract Micro four-point probing is a branch of electrical metrology where (and electromagnetic) properties charge carriers such as conductance, mobility, and tunneling magnetoresistance can be accurately precisely determined at the μm scale below. Here, we propose demonstrate novel application micro probe (M4PP) aimed quantifying thermoelectric sample. Specifically, show that for an AC current passing through bulk material low angular frequency ω , voltage drop across sensing electrodes 2...
Black silicon is a promising texturing method for solar cells since it suppresses optical reflection in broad spectral range. This relaxes the usual antireflection requirements on coatings used surface passivation of silicon. Fabrication n-type emitters requires diffusion phosphorous through nanostructures black silicon, which may need different optimal conditions as compared to e.g pyramidal wetetched structures due characteristic dimensions. In addition, process should ideally not...
Conventional three-dimensional optics requires curvature to control the wave front of light thus making it difficult reduce size optical systems. Furthermore, for correction aberrations, complex systems comprising more than one lens are used. This adds additional bulk, mass and complexity Recent development in diffractive has enabled new thin lightweight elements such as metalenses. We introduce resonant laser printing technique a flexible photo-thermal technology metalens fabrication with...