A5021989547- Silicon and Solar Cell Technologies
- Semiconductor materials and interfaces
- Thin-Film Transistor Technologies
- Silicon Nanostructures and Photoluminescence
- Advanced Chemical Physics Studies
- Electrocatalysts for Energy Conversion
- Supercapacitor Materials and Fabrication
- Electron and X-Ray Spectroscopy Techniques
- Advanced battery technologies research
- Advancements in Battery Materials
- Semiconductor materials and devices
- Mineralogy and Gemology Studies
- Silicon Carbide Semiconductor Technologies
- Glass properties and applications
- Catalytic Processes in Materials Science
- Surface and Thin Film Phenomena
- Solidification and crystal growth phenomena
- Aluminum Alloy Microstructure Properties
- Physics of Superconductivity and Magnetism
- Metallurgical Processes and Thermodynamics
- Photovoltaic System Optimization Techniques
- Rare-earth and actinide compounds
- Photovoltaic Systems and Sustainability
- Pigment Synthesis and Properties
- Catalysis and Oxidation Reactions
SINTEF Industry
2018-2024
SINTEF
2015-2024
Norwegian University of Science and Technology
2003-2007
Zinc-air batteries (ZABs) offer a sustainable and safe pathway to low-cost energy storage. Recent research shows that thermally-sintered porous Zn electrodes with three-dimensional network structure can enhance the performance lifetime of ZABs, but they are expensive energy-intensive manufacture. In this work, monolithic fabricated through an efficient cold sintering process (CSP) were studied for rechargeable ZABs. Electrochemical studies extended charge-discharge cycling show good...
We report results from a national project about impurities in high performance multicrystalline silicon: Contamination sources, transport routes, interaction with crystal defects and impact on solar cell efficiency parameters. Several ingots were produced lab scale furnace. Growth parameters crucible types varied, purity quartz crucibles compared to novel silicon nitride crucibles. The material was characterized by range of methods including FTIR, GDMS, NAA, EBSD, dislocation etching,...
The dominating technology of solar cell production today is based on monocrystalline silicon, produced mostly by the Czochralski process. Recently, industry, has started to move towards growing larger and better-performing ingots. This triggered a need for crucibles that can withstand longer runtimes with better mechanical properties high purity reduce silicon melt contamination. In this work we present current state fused quartz summary most important literature papers in field. review...
The objective of this work was to study the electrodeposition silicon in molten KF-LiF (eut)-K2SiF6 (5 mol%) on Ag and Si substrates at 550oC 800oC. In addition electrochemical studies system were performed silver, tungsten glassy carbon measurements confirmed that reduction is diffusion controlled occurs two steps. On dense, coherent films with good adhesion no inclusions salt obtained 800oC growth rate 52 µm/hour. silicon, microstructure seemed consist small "randomly" oriented crystals....
Herein, we present a synthesis route for high-efficiency nitrogen-doped carbon materials using kraft pulping residue, black liquor, and wood charcoal as sources. The synthesized materials, based on liquor its mixture with charcoal, exhibited high specific surface areas (SSAs) of 2481 2690 m2 g-1, respectively, well volume mesopores an average size 2.9-4.6 nm. nitrogen content was approximately 3-4 at% in the materials. A capacitance 81-142 F g-1 achieved 1 M Na2SO4 aqueous solution at...
$\mathrm{CO}$ adsorption on $\mathrm{Ce}\text{\ensuremath{-}}\mathrm{Pt}(111)$ has been studied by temperature programmed desorption (TPD), low energy electron diffraction (LEED) and x-ray photoelectron spectroscopy (XPS). Thin layers (1 to 3 ML) of Ce $\mathrm{Pt}(111)$ form upon annealing $1000\phantom{\rule{0.3em}{0ex}}\mathrm{K}$ a surface alloy which most likely is Pt terminated. The overlayer structure at saturation coverage argued be an intermediate between...
As there is an increased demand for monocrystalline silicon based solar cells, interest in stronger and more durable fused quartz crucibles used the Czochralski process. In this study we focused on uniformity of hydroxyl impurities these crucibles, its potential influence viscosity crucible by combining data from IR-microscopy a self-made measurement setup. A half manufactured two types sands was studied, OH groups content mapped, at 1500 °C measured. Local variations average 26.7 ppm...
The formation of a samarium on silicon carbide (Sm∕SiC) alloy after deposition 2–3 monolayers Sm in ultrahigh vacuum clean reconstructed carbon(000-1)- and silicon(0001)-terminated SiC surfaces is studied by x-ray photoemission spectroscopy, ultraviolet low-energy electron diffraction (LEED). measured work function together with core-level spectroscopy used to differentiate the silicide (Sm–Si–C) surface alloys both polar faces 4H-SiC. Both naturally n-type-doped bulk Si-face low-doped...
Ethylene adsorption on Pt(111) at 95K was studied by temperature programed desorption (TPD), low energy electron diffraction (LEED), and x-ray photoelectron spectroscopy. desorbs reversibly 112K irreversibly 255 280K. It is generally accepted that annealing of ethylene adsorbed to 300K results in a dehydrogenation ethylidyne through an ethylidene intermediate. This observed hydrogen peak 300K. Also, hydrogenation the small ethane Upon heating 700K, species will further dehydrogenate carbidic...
Micro X-Ray computational tomography (µ-CT), has been applied to study the bubble distribution across wall of fused quartz crucibles used for Czochralski pulling monocrystalline silicon ingots solar cells. Two from different suppliers in study. One set samples was stored water 3 days ("wet" samples) and one at 200 °C air ("dry" prior first analysis. Then same were heated 24 h 1400 reanalysed. The µ-CT data processed 2D 3D mode. results showed that total volume 3D, while number bubbles 6–9...