Browsing NTNU Open by Author "Di Sabatino Lundberg, Marisa"
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Application of 7N In as secondary cathode for the direct current-glow discharge mass spectrometry analysis of solid, fused high-purity quartz
Busam, Jochen; Stokkan, Gaute; Muggerud, Astrid Marie F; Di Sabatino Lundberg, Marisa (Peer reviewed; Journal article, 2021)Direct current glow discharge mass spectrometry with an indium-based secondary cathode technique is used to analyze solid, nonconducting, fused high-purity quartz regarding metallic impurities of relevance to the solar ... -
Copper in compensated p- and n-type Czochralski silicon: Diffusivity, influence on the majority charge carrier density and mobility
Gaspar, Guilherme Manuel Morais; Modanese, Chiara; Bernardis, Sarah; Enjalbert, N.; Arnberg, Lars; Dubois, S.; Di Sabatino Lundberg, Marisa (Peer reviewed; Journal article, 2022)Copper contamination risks are present throughout the whole crystalline silicon solar cell process flow, namely during ingot growth processes using recycled feedstock, wafer sawing and metallisation. Copper is a fast-diffusing ... -
Defect related radiative recombination in mono-like crystalline silicon wafers
Olsen, Espen; Bergan, Simen; Mehl, Torbjørn; Burud, Ingunn; Ekstrøm, Kai Erik; Di Sabatino Lundberg, Marisa (Journal article, 2017)We report on studies of sub-bandgap defect related photoluminescence (DRL) signals originating from radiative recombination through traps in the bandgap of cooled mono-like silicon wafers. Spectrally resolved photoluminescence ... -
Defects in multicrystalline Si wafers studied by spectral photoluminescence imaging, combined with EBSD and dislocation mapping
Mehl, Torbjørn; Di Sabatino Lundberg, Marisa; Adamczyk, Krzysztof; Burud, Ingunn; Olsen, Espen (Journal article; Peer reviewed, 2016)Defect related sub-band gap luminescence emissions due to Shockley-Read-Hall recombination in mc-Si wafers have been investigated with spectral photoluminescence imaging, combined with electron backscatter diffraction and ... -
Depth profiling at a steel-aluminum interface using slow-flow direct current glow discharge mass spectrometry
Paudel, Gagan; Langelandsvik, Geir; Khromov, Sergey; Arbo, Siri Marthe; Westermann, Ida; Roven, Hans Jørgen; Di Sabatino Lundberg, Marisa (Journal article; Peer reviewed, 2021) -
Diffusion studies of Fe in amorphous quartz for the PV industry
Austreid, Ragnhild (Master thesis, 2020)Kvartsdiglene som brukes til å støpe multikrystallinsk silisium (mc-Si) til solcelleindustrien er en dominerende forurensningskilde i silisiumproduksjonen. For høye konsentrasjoner av metalliske urenheter, som jern, i ... -
Effect of gas atmospheres on the interactions between liquid silicon and coated graphite substrates
Hendawi, Rania; Arnberg, Lars; Di Sabatino Lundberg, Marisa (Peer reviewed; Journal article, 2022)Interactions between the gas atmosphere, liquid silicon, Si3N4 coating, and graphite are of great interest for photovoltaic silicon applications. However, previous studies focus more on the wetting of silicon on coated ... -
Effect of Hot Rolling on Grain Refining Performance of Al–5Ti–1B Master Alloy on Hot Tearing on Al–7Si–3Cu Alloy
Rathi, Sachin Kumar; Sharma, Ashok; Di Sabatino Lundberg, Marisa (Journal article; Peer reviewed, 2018)It has been known experimentally that TiAl3 acts as a powerful nucleant for the solidification of aluminum from the melt; however, a full microscopic understanding is still lacking. To improve microscopic understanding, ... -
The effect of preliminary heat treatment on the durability of reaction bonded silicon nitride crucibles for solar cells applications
Hendawi, Rania Tayseer Atieh; Ciftja, Arjan; Stokkan, Gaute; Arnberg, Lars; Di Sabatino Lundberg, Marisa (Peer reviewed; Journal article, 2020)Silicon nitride crucibles have the potential to replace silica crucibles and reduce the cost of silicon crystallization because of their reusability potential. Till date, crucibles’ heat treatment before each use is a ... -
Effect of Zr addition on overaging and tensile behavior of 2618 aluminum alloy
Toschi, Stefania; Balducci, Eleonora; Ceschini, Lorella; Mørtsell, Eva Anne; Morri, Alessandro; Di Sabatino Lundberg, Marisa (Journal article; Peer reviewed, 2019)The effect of Zr addition on overaging and tensile behavior in a 2618 Al–Cu–Mg–Ni–Fe alloy has been investigated in this study. The chemical composition of the base 2618 alloy, containing ~0.1 wt % of Zr, was modified by ... -
Effects of Shading on PV Power Production in Norwegian Climates
Willems, Carolyn Marie (Master thesis, 2018)Policy, and a significant decrease in cost have played a major role in bringing photovoltaic solar to the forefront as a renewable energy source and a lucrative business opportunity around the world. The Norwegian solar ... -
Formation of Dislocation Arrays from CSL-type Grain Boundaries in Solar Silicon
Dyrvik, Emil Grove (Master thesis, 2019)Fotovoltaisk solenergi er allerede en av de store fornybare energikildene og forventes å være en av de viktigste energiteknologiene i en bærekraftig fremtid. Solceller basert på multikrystallinsk silisium har vært en ... -
Guidelines for establishing an etching procedure for dislocation density measurements on multicrystalline silicon samples
Adamczyk, Krzysztof Jan; Stokkan, Gaute; Di Sabatino Lundberg, Marisa (Journal article; Peer reviewed, 2018)With multicrystalline silicon becoming the main material used for photovoltaic applications and dislocations being one of the main material limitations to better solar cell efficiency, etch pit density measurements are ... -
High performance multicrystalline silicon: Grain structure and iron precipitation
Autruffe, Antoine; M'hamdi, Mohammed; Schindler, Florian; Heinz, Friedemann D.; Ekstrøm, Kai Erik; Schubert, Martin C.; Di Sabatino Lundberg, Marisa; Stokkan, Gaute (Journal article; Peer reviewed, 2017)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. ... -
How Slight Solidification Rate Variations within Cast Plate Affect Mechanical Response: A Study on As-Cast A356 Alloy with Cu Addition
Di Giovanni, Maria Teresa; Cerri, Emanuela; Saito, Takeshi; Akhtar, Shahid; Åsholt, Petter; Li, Yanjun; Di Sabatino Lundberg, Marisa (Journal article; Peer reviewed, 2018)The present work investigates a narrow range of secondary dendrite arm spacing (SDAS), in an as-cast A356 alloy with and without copper (Cu) additions. Cu was added to the base A356 alloy melt to reach the target concentration ... -
Impurity control in high performance multicrystalline silicon
Stokkan, Gaute; Di Sabatino Lundberg, Marisa; Søndenå, Rune; Juel, Mari; Autruffe, Antoine; Adamczyk, Krzysztof; Skarstad, Hanna Vaksvik; Ekstrøm, Kai Erik; Wiig, Marie Syre; You, Chang Chuan; Haug, Halvard; M'hamdi, Mohammed (Journal article; Peer reviewed, 2017)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. ... -
In-situ studies of multicrystalline silicon nucleation and growth on alpha- and beta-Si3N4 coated substrates
Undheim, Espen; Maeda, Kensaku; Arnberg, Lars; Holmestad, Randi; Fujiwara, Kozo; Di Sabatino Lundberg, Marisa (Journal article; Peer reviewed, 2018)The growth of silicon on various nitride coated quartz substrates were studied using in-situ observation of the solidification process. Three different coating types were used: One consisting entirely of α-Si3N4 particles, ... -
Influence of Annealing of Al-5Ti-1B Master Alloy on Hot Tearing of Cast Al-7Si-3Cu Alloy
Rathi, Sachin Kumar; Sharma, Ashok; Di Sabatino Lundberg, Marisa (Journal article; Peer reviewed, 2017)Hot tearing is a common and severe defect encountered in aluminium alloys castings. It is affected by alloy composition as well as processing conditions and variables. In Al–7Si-3Cu presence of copper increases mechanical ... -
Influence of polycrystalline material on crater shape optimization and roughness using low power/low-pressure direct-current glow discharge mass spectrometry
Paudel, Gagan; Khromov, Sergey; Kasik, Martin; Roven, Hans Jørgen; Di Sabatino Lundberg, Marisa (Peer reviewed; Journal article, 2020)Depth profiling is an attractive approach for analysis of non-homogeneous samples and layered materials. This application requires an optimum sputtered crater profile, which means a flat crater bottom with steep walls and ... -
Investigation of pinholes in Czochralski silicon ingots in relation to structure loss
Sortland, Øyvind Sunde; Øvrelid, Eivind Johannes; M'hamdi, Mohammed; Di Sabatino Lundberg, Marisa (Journal article; Peer reviewed, 2019)In the production of monocrystalline silicon by the Czochralski process, structure loss frequently reduces yield and increases production time. Structure loss means the transition from monocrystalline to multicrystalline ...