Browsing Det matematisk-naturvitenskapelige fakultet by Title
Now showing items 392-411 of 838
-
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)Proton conducting oxide electrolytes find potential application in proton ceramic fuel cells and electrolyzers operating at intermediate temperatures, e.g. 400–600 °C. However, state-of-the-art proton conducting ceramics ...
-
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)Temporal trends of industrial organic contaminants can show how environmental burdens respond to changes in production, regulation, and other anthropogenic and environmental factors. Numerous studies have documented such ...
-
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)Ion implantation is an important technique in semiconductor processing and has become a key technology for 4H-SiC devices. Today, aluminum (Al) implantations are routinely used for p-type contacts, p+-emitters, terminations ...
-
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)Electronic states in the upper part of the bandgap of reduced and/or hydrogenated n-type rutile TiO2 single crystals have been studied by means of thermal admittance and deep-level transient spectroscopy measurements. The ...
-
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)Self-diffusion of carbon (12C and 13C) and silicon (28Si and 30Si) in 4H silicon carbide has been investigated by utilizing a structure containing an isotope purified 4H-28Si12C epitaxial layer grown on an n-type (0001) ...
-
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)In catalysts for CO2 hydrogenation, the interface between metal nanoparticles (NPs) and the support material is of high importance for the activity and reaction selectivity. In Pt NP-containing UiO Zr-metal–organic frameworks ...
-
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)The influence of Fermi level position and annealing ambient on the zinc vacancy VZn generation and Al diffusion is studied in monocrystalline zinc oxide (ZnO). From secondary-ion mass spectrometry and positron annihilation ...
-
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)The influence of heat treating [Formula: see text]-type bulk [Formula: see text]-Ga[Formula: see text]O[Formula: see text] in hydrogen (H[Formula: see text]) and argon (Ar) gases on the presence of the defect level commonly ...
-
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)The silicon vacancy (VSi) in 4H-SiC is a room temperature single-photon emitter with a controllable high-spin ground state and is a promising candidate for future quantum technologies. However, controlled defect formation ...
-
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)In this work, upgraded metallurgical grade silicon (UMG-Si) wafer was used to fabricate mesoporous nanostructures, as an effective antireflection layer for solar photovoltaic cells. The length of the vertical Si nanostructure ...
-
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)Ga2O3 is a deep-UV transparent semiconducting oxide being interesting for solar-blind photo detectors e.g. for flame or missile plume detection. The bandgap of about 4.9 eV can be increased by alloying with Al2O3. We have ...
-
(Journal article / Tidsskriftartikkel / SubmittedVersion, 2018)In this work, an extensive investigation of the preparation of a large body of desilicated ZSM-22 zeolites and their basic characterization is presented. We investigate the effects of the properties of the starting zeolite, ...
-
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)Abstract Modern geophysics highlights that the slip behaviour response of faults is variable in space and time and can result in slow or fast ruptures. However, the origin of this variation of the rupture velocity ...
-
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)Precise control of the elemental composition and distribution in bimetallic nanoparticles is of great interest for both fundamental studies and applications, e.g. in catalysis. We present a new innovative and facile synthesis ...
-
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)The layered oxide Na2Zn2TeO6 is a fast Na+ ion conductor and a suitable candidate for application as a solid-state electrolyte. We present a detailed study on how synthesis temperature and Na-content affect the crystal ...
-
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)Frost is damaging to plants when air temperature drops below their tolerance threshold. The set of mechanisms used by cold-tolerant plants to withstand freezing is called “hardening” and typically take place in autumn to ...
-
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)Over the last few years, genomic studies on Yersinia pestis, the causative agent of all known plague epidemics, have considerably increased in numbers, spanning a period of about 5,000 y. Nonetheless, questions concerning ...
-
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)Peritoneal malignant mesothelioma is a rare disease with a generally poor prognosis and poor response to chemotherapy. To improve survival there is a need for increased molecular understanding of the disease, including ...
-
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)Ion implantation is a commonly used process step in 4H-SiC device manufacturing to implement precise concentrations of dopant atoms in selected areas and depths. This paper reports on vanadium (V) implantation into ...
-
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)Channeling phenomena during ion implantation have been studied for 50 keV 11 B, 100 keV 27 Al and 240 keV 71 Ga in 4H-SiC by secondary ion mass spectrometry and medium energy ion backscattering. The same projected range ...