Characterization of hydrogen-terminated CVD diamond surfaces and their contact properties

H. Kawarada; M. Aoki; H. Sasaki; K. Tsugawa

doi:10.1016/0925-9635(94)90309-3

Characterization of hydrogen-terminated CVD diamond surfaces and their contact properties

H. Kawarada^*, M. Aoki, H. Sasaki, K. Tsugawa

^*Corresponding author for this work

School of Fundamental Science and Engineering

Research output: Contribution to journal › Article › peer-review

67 Citations (Scopus)

Abstract

Metal-diamond contact properties have been investigated on diamond (001) 2 × 1 surfaces. The 2 × 1 reconstruction has been examined by atomic-scale scanning tunnelling microscopy. From ab initio molecular orbital calculations, the stablest structure of the 2 × 1 unit is a monohydride carbon dimer. On the surfaces the highest quality Schottky diodes have been fabricated using metals with lower electronegativities. The Schottky barrier heights depend on the metal electronegativity. Moreover ohmic contacts have been obtained in metals with higher electronegativities. These results indicate that the surface states are effectively reduced by the 2 × 1 surface reconstruction.

Original language	English
Pages (from-to)	961-965
Number of pages	5
Journal	Diamond and Related Materials
Volume	3
Issue number	4-6
DOIs	https://doi.org/10.1016/0925-9635(94)90309-3
Publication status	Published - 1994 Apr

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Chemistry(all)
Mechanical Engineering
Materials Chemistry
Electrical and Electronic Engineering

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10.1016/0925-9635(94)90309-3

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abstract = "Metal-diamond contact properties have been investigated on diamond (001) 2 × 1 surfaces. The 2 × 1 reconstruction has been examined by atomic-scale scanning tunnelling microscopy. From ab initio molecular orbital calculations, the stablest structure of the 2 × 1 unit is a monohydride carbon dimer. On the surfaces the highest quality Schottky diodes have been fabricated using metals with lower electronegativities. The Schottky barrier heights depend on the metal electronegativity. Moreover ohmic contacts have been obtained in metals with higher electronegativities. These results indicate that the surface states are effectively reduced by the 2 × 1 surface reconstruction.",

author = "H. Kawarada and M. Aoki and H. Sasaki and K. Tsugawa",

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T1 - Characterization of hydrogen-terminated CVD diamond surfaces and their contact properties

AU - Kawarada, H.

AU - Aoki, M.

AU - Sasaki, H.

AU - Tsugawa, K.

PY - 1994/4

Y1 - 1994/4

N2 - Metal-diamond contact properties have been investigated on diamond (001) 2 × 1 surfaces. The 2 × 1 reconstruction has been examined by atomic-scale scanning tunnelling microscopy. From ab initio molecular orbital calculations, the stablest structure of the 2 × 1 unit is a monohydride carbon dimer. On the surfaces the highest quality Schottky diodes have been fabricated using metals with lower electronegativities. The Schottky barrier heights depend on the metal electronegativity. Moreover ohmic contacts have been obtained in metals with higher electronegativities. These results indicate that the surface states are effectively reduced by the 2 × 1 surface reconstruction.

AB - Metal-diamond contact properties have been investigated on diamond (001) 2 × 1 surfaces. The 2 × 1 reconstruction has been examined by atomic-scale scanning tunnelling microscopy. From ab initio molecular orbital calculations, the stablest structure of the 2 × 1 unit is a monohydride carbon dimer. On the surfaces the highest quality Schottky diodes have been fabricated using metals with lower electronegativities. The Schottky barrier heights depend on the metal electronegativity. Moreover ohmic contacts have been obtained in metals with higher electronegativities. These results indicate that the surface states are effectively reduced by the 2 × 1 surface reconstruction.

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Characterization of hydrogen-terminated CVD diamond surfaces and their contact properties

Abstract

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