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Synthesis, Structure, and Catalytic Applications for ortho- and meta-Carboranyl Based NBN Pincer-Pd Complexes

Synthesis, Structure, and Catalytic Applications for ortho- and meta-Carboranyl Based NBN Pincer-Pd Complexes

Min Ying Tsang, Clara Viñas, Francesc Teixidor, José Giner Planas*, Nerea Conde, Raul SanMartin, María Teresa Herrero, Esther Domínguez, Agustí Lledós, Pietro Vidossich, and Duane Choquesillo-Lazarte.    Inorg. Chem., 2014, 53 (17), pp 9284–9295

Band-Offset Driven Efficiency of the Doping of SiGe Core−Shell Nanowires

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nl103621s

Michele Amato, Stefano Ossicini, and Riccardo Rurali*
Nano Lett.
, 2011, 11 (2), pp 594-598
DOI: 10.1021/nl103621s

Impurity doping of semiconducting nanowires has been predicted to become increasingly inefficient as the wire diameter is reduced, because impurity states get deeper due to quantum and dielectric confinement. We show that efficient n- and p-type doping can be achieved in SiGe core-shell nanowires as thin as 2 nm, taking advantage of the band offset at the Si/Ge interface. A one-dimensional electron (hole) gas is created at the band-edge and the carrier density is uniquely controlled by the impurity concentration with no need of thermal activation. Additionally, SiGe core-shell nanowires provide naturally the separation between the different types of carriers, electron and holes, and are ideally suited for photovoltaic applications.

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