Publicaties
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In/extrinsic granularity in superconducting boron-doped diamond Universiteit Hasselt KU Leuven
When charge carriers are introduced in diamond, e.g. by chemical doping with Boron (B), the C1-xBx diamond:B can exhibit an insulator-to-metal transition (p(Mott) similar to 2 x 10(20) cm(-3)). Under even heavier boron doping (n(B) similar to 10(21) cm(-3)) diamond becomes superconducting. Using microwave plasma-assisted chemical vapor deposition (MPCVD) we have prepared diamond:B thin films with critical offset temperatures T-C below 3 K. We ...
Can europium atoms form luminescent centres in diamond : a combined theoretical-experimental study Universiteit Gent Universiteit Hasselt KU Leuven
Revisiting the neutral C-vacancy in diamond : localization of electrons through DFT plus U Universiteit Gent Universiteit Hasselt
Photoluminescence of Germanium-Vacancy Centers in Nanocrystalline Diamond Films: Implications for Quantum Sensing Applications Universiteit Hasselt
Point defects in diamond, promising candidates for nanoscale pressure-and temperature-sensing applications, are potentially scalable in polycrystalline diamond fabricated using the microwave plasma-enhanced chemical vapor deposition (MW PE CVD) technique. However, this approach introduces residual stress in the diamond films, leading to variations in the characteristic zero phonon line (ZPL) of the point defect in diamond. Here, we report the ...
Photoluminescence of germanium-vacancy centers in nanocrystalline diamond films Universiteit Antwerpen Universiteit Hasselt
Point defects in diamond, promising candidates for nanoscale pressure- and temperature-sensing applications, are potentially scalable in polycrystalline diamond fabricated using the microwave plasma-enhanced chemical vapor deposition (MW PE CVD) technique. However, this approach introduces residual stress in the diamond films, leading to variations in the characteristic zero phonon line (ZPL) of the point defect in diamond. Here, we report the ...
Incorporation of nitrogen in diamond films – A new way of tuning parameters for optical passive elements Universiteit Hasselt
This paper investigates the impact of nitrogen incorporation in diamond films for the construction of an interferometric sensor to measure displacement. Diamond films with different nitrogen levels (0-5%) were deposited on silicon substrates by microwave plasma enhanced chemical vapor deposition. The structural characteristics of these samples are characterized using scanning electron microscopy (SEM), atomic force microscopy (AFM), confocal ...
Diamond nano-wires, a new approach towards next generation electrochemical gene sensor platforms Universiteit Hasselt
A novel bio-sensing platform is introduced by combination of a) geometrically controlled DNA bonding using vertically aligned diamond nano-wires and b) the superior electrochemical sensing properties of diamond as transducer material. Ultra-hard vertically aligned diamond nano-wires are electrochemically modified to bond phenyl linker-molecules to their tips which provide mesospacing for DNA molecules on the transducer. The nano-wires are ...
High phosphorous incorporation in (100)-oriented MP CVD diamond growth Universiteit Hasselt
Diamond n-type layers are crucial for the development of a new bipolar diamond-based electronic technology. However, the difficulties to incorporate impurity atoms into the diamond lattice make its growth a stage of technological research still in progress. Phosphorus doping has been carried out successfully on (111)-oriented diamond substrates, reaching high concentrations and good reproducibility. Nevertheless, such reproducible results have ...
Large area microwave plasma CVD of diamond using composite right/left-handed materials Universiteit Hasselt
Diamond growth at low temperatures (<400 degrees C) and over large areas is attractive for materials, which are sensitive to high temperatures and require good electronic, chemical or surface tribological properties. Resonantcavity microwave plasma enhanced (MWPE) chemical vapor deposition (CVD) is a standard method for growing diamonds, however, with limited deposition area. An alternative method for CVD of diamond over large area and at low ...