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2.376 Aktuelle Fachpublikationen zum Thema temperature

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Low temperature hydrogenated microcrystalline silicon‐carbon alloys deposited by RF‐PECVD

10.10.2014 | Sofia Gaiaschi, Marie‐Estelle Gueunier‐Farret, Erik V. Johnson, physica status solidi (c), 2014

Abstract Two sets of hydrogenated microcrystalline silicon carbon alloys were deposited by standard radio frequency (RF) plasma enhanced chemical vapor deposition at a substrate temperature of 175 °C. The effect of the methane flow rate and of the RF‐power were investigated. Samples were ...

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Nanoscale electrical characterization of graphene contacts to AlGaN/GaN heterostructures

10.10.2014 | Gabriele Fisichella, Giuseppe Greco, Salvatore Di Franco, Fabrizio Roccaforte, Sebastiano Ravesi, Filippo Giannazzo, physica status solidi (c), 2014

Abstract In this paper, we describe a highly reproducible method to transfer graphene (Gr) grown on copper by chemical vapour deposition to the surface of AlGaN/GaN heterostructures and we report a nanoscale electrical characterization of current transport at Gr contact to AlGaN. This latter ...

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Thermodynamic study of the ternary system gallium‐arsenic‐bismuth

10.10.2014 | N. Elayech, H. Fitouri, Y. Essouda, A. Rebey, B. El Jani, physica status solidi (c), 2014

Abstract Binary thermodynamic data, successfully used for phase diagram calculations of binary system Ga‐As, Ga‐Bi and As‐Bi were used for prediction of phase equilibria in ternary Ga‐As‐Bi system. The parameters for the thermodynamic models of the constituent binary systems and those for the ...

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Optical properties of plasmonic nanoparticles distributed in size determined from a modified Maxwell‐Garnett‐Mie theory

10.10.2014 | Y. Battie, A. Resano‐Garcia, N. Chaoui, A. En Naciri, physica status solidi (c), 2014

Abstract The optical properties of spherical gold and silver nanoparticles distributed in size are investigated through a new effective medium theory. It is about the modified Maxwell‐Garnett‐Mie theory (MMGM) that takes into account the intrinsic confinement, dynamic effects and the ...

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Monte Carlo study of the early growth stages of 3C‐SiC on misoriented and 6H‐SiC substrates: role of step‐island interaction

10.10.2014 | M. Camarda, A. La Magna, F. La Via, physica status solidi (c), 2014

Abstract In this paper, we use three‐dimensional kinetic Monte Carlo simulations on superlattices to study the hetero‐polytypical growth of cubic silicon carbide polytype (3C‐SiC) on hexagonal 6H‐SiC step‐bunched substrates with miscuts towards the and directions. We find that the ...

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Green light‐emitting CdTe nanocrystals: synthesis and optical characterizations

10.10.2014 | Luciana Algieri, Roberta Rosato, Maria Elena Mosca, Maria Lucia Protopapa, Anna Grazia Scalone, Francesca Di Benedet ..., physica status solidi (c), 2014

Abstract In this work, we report on the synthesis of CdTe nanocrystals (NCs) by using of two different saturated long‐chain capping ligands, oleic (OA) and myristic acids (MA), and investigate their influence on the nanocrystals optical properties. The main goal of our study is to identify the ...

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Electroluminescence of germanium LEDs on silicon: Influence of antimony doping

10.10.2014 | Bernhard Schwartz, André Klossek, Martin Kittler, Michael Oehme, Erich Kasper, Jörg Schulze, physica status solidi (c), 2014

Abstract Antimony‐doped Ge‐LEDs were subjected to electroluminescence studies at temperatures about 300 K and 80 K. The LEDs were grown on Si substrates by MBE. The thickness of the active layer was 300 nm. For the p+nn+‐LEDs the Sb concentrations were 1 × 1018, 1 × 1019, 3 × 1019, 4 × 1019, 7 ...

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Silicon film deposition on crystalline, sintered and powder substrates using an inline optical processing CVD system

30.09.2014 | André Augusto, Filipe Serra, António Vallêra, João M. Serra, physica status solidi (c), 2014

Abstract An inline optical CVD process operating at low temperature (10 mm/min) inside the furnace. Solid silicon substrates were laser textured to reduce the reflectivity, leveraging the growth rates. Laser patterning has a strong influence in the growth rate, reaching values up to 9 µm/min. ...

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Properties of electrodeposited germanium thin films

30.09.2014 | Yasutaka Uchida, Tomoko Funayama, Yoshiaki Kogure, Kazuyoshi Ueno, physica status solidi (c), 2014

Abstract In this paper, the results of Ge film deposited by electroplating method was studied and showed the possibility of making a NIRS sensor by the Ge film. Cu/Ti double layer structure could use the cathode electrode on the glass substrate during the GeCl4 electroplating. The deposition ...

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Effect of total gas pressure in sputtered hydrogenated amorphous silicon

30.09.2014 | Abdelkrim Fedala, Aghilas Dad, Moussa Khefiani‐Guellil, Sonia Tata, Claude Simon, Tayeb Mohammed‐Brahim, physica status solidi (c), 2014

Abstract Hydrogenated amorphous silicon (a‐Si:H) thin films are prepared using DC magnetron sputtering method at a substrate temperature of 200 °C using a plasma of argon and hydrogen gas mixture. The effects of the total gas pressure (TGP) during the deposition on structural, optical and ...

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