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Showing 1 to 20 of 109 for “"Group-iv"”.
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Doping of group IV semiconductor nanowires
… NWs being prominently used in studies of alternative device architectures, and a resurgence in research of Ge as a semiconductor for FET channels, Ge NWs show great promise as components for novel FET designs. GeSn also shows great potential over Si and Ge due to its direct bandgap allowing for …
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Electrically active defects in novel Group IV semiconductors.
… electrical characterisation of defects in novel group IV semiconducting materials: semiconducting diamond and silicon germanium (SiGe) virtual substrates. Several methods to clean diamond surfaces are introduced, which lead to the fabrication of a diamond Schottky diode with acceptable …
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Surface studies of group IV-VI layered crystals
The surface structure of TiS2 has been investigated by low energy electron diffraction (LEED). No surface reconstruction was observed and comparison of LEED intensity data with theory suggests a slight outward relaxation of atomic planes at the surface. The LEED pattern for a crystal cleaved at a …
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Hyperfine Interaction of the Group IV Color Centers
The group IV-negative color centers (SiV⁻, GeV⁻, SnV⁻) are one of the leading candidates for spin-photon interfaces for use in quantum information technologies. They feature highly coherent optical transitions, as well as native electron and nuclear spins that can be used as quantum memories. While …
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Superlattice formation in group IV-B transition metal dichalcogenides
… scattering is observed above T. An optically active far-infrared lattice mode is observed which c breaks up into several additional modes below the phase transition. In the infrared study, there is a dramatic shift in the Drude edge as well as new absorption peaks at low temperature. These …
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Auger-mediated processes and photoluminescence in group iv semiconductor nanostructures
Group IV semiconductors (Si, Ge) are inefficient light emitting materials due to their indirect bandgap structure. Nanostructures of Si, Ge, and SiGe however, have shown relatively high photoluminescence (PL) quantum efficiency (QE) at low carrier concentrations. At higher carrier concentrations, …
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Genetic analysis of the Group IV Rht LOCI in wheat.
The introduction of the group IV semi-dwarf Rht alleles, Rht-B1b (formerly Rht1) and Rht-D1b (formerly Rht2) into bread wheat varieties from the donor line „Norin 10‟ that began in the 1960s was a major contributor to the „green revolution‟. Rht-B1b and Rht-D1b were characterised and cloned over a …
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Engineering the surfaces of group IV materials for energy applications
… (PV) technology promises to be an attractive option for the generation of electricity due to no emissions of greenhouse gases and various additional socio-economic benefits. A major obstacle in the implementation of PV technology on a large scale is the cost. This has led to an increased …
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Trends in the Chemistry of the Group Iv-B Elements
Made available in DSpace on 2014-12-05T19:38:15Z (GMT). No. of bitstreams: 1 6305119.pdf: 5026885 bytes, checksum: 16ab197086fc3ea7e5f908926eace98f (MD5) Previous issue date: 1963
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Preparation, characterisation, and reaction studies of Group IV-transition metal compounds
… and metal carbonyl anions. The two methyl derivatives were characterised by vibrational and nmr spectroscopy and mass spectrometry, with assignments being proposed for most of the observed features of the spectra. Some reactions of H₃GeMn(CO)₅ and MeGeH₂Mn(CO)₅ were investigated. Reagents used …
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Spectroscopic Studies of Group Iv Element Bonding to the Cobalttetracarbonyl Group
Made available in DSpace on 2014-12-09T17:36:41Z (GMT). No. of bitstreams: 1 7013497.pdf: 1840542 bytes, checksum: 52997e1b7b4b0d3b5457528c535d50ef (MD5) Previous issue date: 1969
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Synthesis and characterization of group IV metal complexes featuring tridentate diamidoamine ligands
New synthetic routes for the preparation of five-coordinate zirconium and titanium complexes featuring tridentate diamidoamine ligands were developed. Zirconium dichloride complexes, [(Mes)N(CH2)2NR(CH 2)2N(Mes)]ZrCl2 (R=H, SiMe3), were synthesized via a one step toluene elimination reaction. …
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Kinetics of the Substitution Reactions of Triaryl Group-Iv-Metal - Cobalttetracarbonyl Compounds
Made available in DSpace on 2014-12-10T23:01:42Z (GMT). No. of bitstreams: 1 7412009.pdf: 2732333 bytes, checksum: 9914ea45a8c2a72280d06512abc17b88 (MD5) Previous issue date: 1973
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Group-IV Colour Centres in Diamond for Multi-Photon Entangled State Generation
… computing. In particular, attention has been given to generating entanglement between colour centres to enable quantum networking and the generation of highly entangled states. Over the last 5 years, particular interest has been given to the group-IV colour centres in diamond for their …
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AN INVESTIGATION OF THE FEASIBILITY OF BIOMETHYLATION FOR GROUP IV METALS AND COMPOUNDS
… metals and metalloids has been briefly reviewed. Group IV metals (Sn, Pb) have found widespread industrial use in recent years. Use of lead and organolead chemicals has declined but tin and organotin chemicals production has been increasing. Their methyl derivatives are of comparable toxicity but …
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