Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Hydrogenation of 6H-SiC as a surface passivation stable in air
Autore:
Sieber, N; Mantel, BF; Seyller, T; Ristein, J; Ley, L;
Indirizzi:
Univ Erlangen Nurnberg, Inst Tech Phys, D-91058 Erlangen, Germany Univ Erlangen Nurnberg Erlangen Germany D-91058 -91058 Erlangen, Germany
Titolo Testata:
DIAMOND AND RELATED MATERIALS
fascicolo: 3-7, volume: 10, anno: 2001,
pagine: 1291 - 1294
SICI:
0925-9635(200103/07)10:3-7<1291:HO6AAS>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Keywords:
carbide (SiC); hydrogen termination; electronic passivation; chemical passivation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
10
Recensione:
Indirizzi per estratti:
Indirizzo: Sieber, N Univ Erlangen Nurnberg, Inst Tech Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany Univ Erlangen Nurnberg Erwin Rommel Str 1 Erlangen Germany D-91058
Citazione:
N. Sieber et al., "Hydrogenation of 6H-SiC as a surface passivation stable in air", DIAM RELAT, 10(3-7), 2001, pp. 1291-1294

Abstract

We have terminated the hexagonal (0001) and (000 (1) over bar) surfaces of6H-SiC with a monolayer of hydrogen by exposing the SiC crystal to pure hydrogen at elevated temperatures. The surfaces exhibit sharp, background-free, and unreconstructed LEED patterns and the photoemission spectra show only bulk-related Si and C components and give no indication of additional unwanted adsorbates. On the Si-terminated (0001) surface, a sharp doublet at 2130 cm(-1) with a splitting of 6 cm(-1) is observed in surface-sensitive infrared spectroscopy, which is due to monohydride Si-H stretching modes. Theorigin of the splitting is discussed. The hydrogenated surfaces are passivated chemically and electronically. The oxygen uptake is less than 2 at.% after 2 h air exposure without any sign of Si-O or C-O bond formation. The surface Fermi level is unpinned and exhibits its bulk position on n- and p-type samples. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/04/20 alle ore 19:24:16