• 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 ...
    • 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, ...
    • 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. ...
    • 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 ...
    • 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, ...
    • 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 ...
    • Nanometer‐Scale Depth‐Resolved Atomic Layer Deposited SiO2 Thin Films Analyzed by Glow Discharge Optical Emission Spectroscopy 

      Zhu, Zhen; Modanese, Chiara; Sippola, Perttu; Di Sabatino Lundberg, Marisa; Savin, Hele (Journal article; Peer reviewed, 2018)
      In this contribution, pulsed radio frequency (rf) glow discharge optical emission spectroscopy (GDOES) is used to investigate the film properties of SiO2 deposited by plasma enhanced atomic layer deposition (PEALD), for ...
    • Orientation relationship between b-Si3N4 and Si in multicrystalline silicon ingots for PV applications 

      Undheim, Espen; Vullum, Per Erik; Holmestad, Randi; Arnberg, Lars; Di Sabatino Lundberg, Marisa (Journal article; Peer reviewed, 2018)
      β-Si3N4 particles are thought to be nucleation sites for silicon in multicrystalline silicon (mc-Si) ingots for PV applications. The orientation relationship (OR) between Si and β-Si3N4 has been investigated by transmission ...
    • Performance of Al-5Ti-1B master alloy after ball milling on minimizing hot tearing in Al-7Si-3Cu alloy 

      Rathi, Sachin Kumar; Sharma, Ashok; Di Sabatino Lundberg, Marisa (Journal article; Peer reviewed, 2017)
      Hot tearing of Al–7Si–3Cu alloys with addition of as received Al–5Ti–1B grain refiner and ball milled grain refiner have been studied with constrained mould casting to investigate the effect of these additions on hot tear ...
    • Room temperature mechanical properties of A356 alloy with Ni additions from 0.5 Wt to 2 Wt% 

      Lattanzi, Lucia; Di Giovanni, Maria Teresa; Giovagnoli, Maverick; Fortini, Annalisa; Merlin, Mattia; Casari, Daniele; Di Sabatino Lundberg, Marisa; Cerri, Emanuela; Garagnani, Gian Luca (Journal article; Peer reviewed, 2018)
      In recent years, the influence of Ni on high-temperature mechanical properties of casting Al alloys has been extensively examined in the literature. In the present study, room temperature mechanical properties of an A356 ...
    • Statistical Analysis of Structure Loss in Czochralski Silicon Growth 

      Sortland, Øyvind Sunde; Jomâa, Moez; M'hamdi, Mohammed; Øvrelid, Eivind Johannes; Di Sabatino Lundberg, Marisa (Chapter, 2019)
      In Czochralski monocrystalline silicon growth, structure loss (SL) is the loss of the mono-crystalline structure. It represents a significant loss of productivity. In this work, this phenomenon is investigated by statistical ...
    • Surface passivation properties of HfO2 thin film on n-Type crystalline Si 

      Cheng, Xuemei; Repo, Paivikki; Haug, Halvard; Perros, Alexander Pyymaki; Marstein, Erik Stensrud; Di Sabatino Lundberg, Marisa; Savin, Hele (Journal article, 2017)
      Atomic layer deposited hafnium oxide is shown to provide good surface passivation of low resistivity, n-type crystalline Si wafers after a low temperature anneal. The surface passivation is related to a fixed negative ...
    • Temporal stability of a-Si:H and a-SiNx:H on crystalline silicon wafers 

      Cheng, Xuemei; Marstein, Erik Stensrud; You, Chang Chuan; Haug, Halvard; Di Sabatino Lundberg, Marisa (Journal article; Peer reviewed, 2017)
      The temporal stability of single layer thin films of hydrogenated amorphous silicon (a-Si:H) and silicon nitride (a-SiNx:H) passivated crystalline silicon wafers have been investigated over 18 months. The thin films were ...