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Conventional thermal annealing for a more efficient p-type doping of Al+ implanted 4H-SiC (Articolo in rivista)
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- Conventional thermal annealing for a more efficient p-type doping of Al+ implanted 4H-SiC (Articolo in rivista) (literal)
- Anno
- 2013-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1557/jmr.2012.207 (literal)
- Alternative label
Nipoti R; Scaburri R; Hallen A; Parisini A (2013)
Conventional thermal annealing for a more efficient p-type doping of Al+ implanted 4H-SiC
in Journal of materials research; CAMBRIDGE UNIV PRESS, 32 AVENUES OF THE AMERICAS, NEW YORK, NY 10013-2473 (Stati Uniti d'America)
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- Nipoti R; Scaburri R; Hallen A; Parisini A (literal)
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- http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=8817337 (literal)
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- CNR IMM Bologna; CNR IMM Bologna; KTH Royal Inst Technol; Univ Parma (literal)
- Titolo
- Conventional thermal annealing for a more efficient p-type doping of Al+ implanted 4H-SiC (literal)
- Abstract
- The p-type doping of high purity semi-insulating 4H polytype silicon carbide (HPSI 4H-SiC) by aluminum ion (Al+) implantation has been studied in the range of 1 x 10(19) to 8 x 10(20)/cm(3) (0.39 mu m implanted thickness) and a conventional thermal annealing of 1950 degrees C/5 min. Implanted 4H-SiC layers of p-type conductivity and sheet resistance in the range of 1.6 x 10(4) to 8.9 x 10(2) Omega(square), corresponding to a resistivity in the range of 4.7 x 10(-1) to 2.7 x 10(-2) Omega cm have been obtained. Hall carrier density and mobility data in the temperature range of 140-720 K feature the transition from a valence band to an intraband conduction for increasing implanted Al ion concentration from 1 x 10(19)/cm(3) to 4 x 10(20)/cm(3). A 73% electrical activation, 31% compensation and 146 meV ionization level have been obtained using a best-fit solution of the neutrality equation to Hall carrier data for the lowest concentration. (literal)
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