Blar i SINTEF Industri på forfatter "Almeida Carvalho, Patricia"
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Silicon powder-based wafers for low-cost photovoltaics: Laser treatments and nanowire etching
Jia, Guobin; Plentz, Jonathan; Gawlik, Annett; S. Azar, Amin; Stokkan, Gaute; Syvertsen, Martin; Almeida Carvalho, Patricia; Dellith, Jan; Dellith, Andrea; Andrä, Gudrun; Ulyashin, Alexander (Peer reviewed; Journal article, 2018)In this study, laser-treated polycrystalline Si (pc-Si) wafers, fabricated by wire sawing of hot-pressed ingots sintered from Si powder, have been investigated. As-cut wafers and those with high-quality thin Si layers ... -
Stability of beryllium coatings deposited on carbon under annealing up to 1073 K
Mateus, Rodrigo; Porosnicu, Corneliu; Franco, Noelia; Almeida Carvalho, Patricia; Lungu, Cristian Petricǎ; Alves, Eduardo (Journal article; Peer reviewed, 2019)Chemical reactions involving co-deposits in plasma facing components will occur under heat loads. Previous experiments in the Be-C-O system evidenced that compound formation may induce by itself the peel-off of deposits ... -
Synthesis, microstructure, and thermoelectric properties of Sb-Based high entropy alloys
Rahman, Jamil Ur; Almeida Carvalho, Patricia; Soltani, Nayereh; Schrade, Matthias; Gunnæs, Anette Eleonora; Finstad, Terje Gunnar (Peer reviewed; Journal article, 2022)In this paper, we explore the synthesis of new antimonide compounds based upon concepts of high entropy alloys (HEA). HEAs are usually multi-element (⪆5) alloys with near the equiatomic composition. They have been given ... -
Tailoring Upconversion and Morphology of Yb/Eu Doped Y2O3 Nanostructures by Acid Composition Mediation
Nunes, Daniela; Pimentel, Ana; Matias, Mariana; Freire, Tomas; Araujo, A; Silva, Filipe; Gaspar, Patricia; Garcia, Silvia; Almeida Carvalho, Patricia; Fortunato, Elvira; Martins, Rodrigo (Peer reviewed; Journal article, 2019)The present study reports the production of upconverter nanostructures composed by a yttrium oxide host matrix co-doped with ytterbium and europium, i.e., Y2O3:Yb3+/Eu3+. These nanostructures were formed through the ... -
Thermochemically stable ceramic compositemembranes based on Bi2O3 for oxygen separationwith high permeability
Xing, Wen; Almeida Carvalho, Patricia; Polfus, Jonathan M.; Li, Zuoan (Journal article; Peer reviewed, 2019)Ceramic oxygen separation membranes can be utilized to reduce CO2 emissions in fossil fuel power generation cycles based on oxy-fuel combustion. State-of-the-art oxygen permeable membranes based on Ba0.5Sr0.5Co0.8Fe0.2O3−δ ... -
Thin films made by reactive sputtering of high entropy alloy FeCoNiCuGe: Optical, electrical and structural properties
Mayandi, Jeyanthinath; Finstad, Terje Gunnar; Dahl, Øystein; Ponniah, Vajeeston; Schrade, Matthias; Løvvik, Ole Martin; Diplas, Spyridon; Almeida Carvalho, Patricia (Peer reviewed; Journal article, 2022)Films were reactively sputtered from a high entropy alloy (HEA) FeCoNiCuGe target in an Ar/O2 plasma. The case of zero O2 gas flow yielded HEA films of FeCoNiCuGe. These as-deposited HEA films have a face centered cubic ... -
Wastewater-aged silver nanoparticles in single and combined exposures with titanium dioxide affect the early development of the marine copepod Tisbe battagliai
Georgantzopoulou, Anastasia; Farkas, Julia; Ndungu, Kuria; Coutris, Claire; Almeida Carvalho, Patricia; Booth, Andy; Macken, Ailbhe (Peer reviewed; Journal article, 2020)In this study, the effects of aged Ag and TiO2 NPs, individually and as a mixture, in wastewater relative to their pristine counterparts on the development of the copepod nauplii (Tisbe battagliai) were investigated. NP ...