Field emission from chemical vapor deposition diamond surface with graphitic patches

被引：15

作者：

Cui, JB ^{[1
]}

Robertson, J ^{[1
]}

机构：

[1] Univ Cambridge, Dept Engn, Cambridge CB2 1PZ, England

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B | 2002年 / 20卷 / 01期

关键词：

D O I：

10.1116/1.1434972

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The field emission properties of a polycrystalline diamond film with hydrogenated and hydrogen free surfaces have been investigated by monitoring both the emission current-voltage curve and emission site density. A very low turn-on field of electron emission was found to be 0.5 V/mum for the hydrogenated surface and 4 V/mum for the hydrogen free surface. The emission site densities were significantly reduced from 3 x 10(3) to 2 x 10(2) cm(-2) at 5 V/mum after the surface hydrogen desorption. The low turn-on field and high emission site density on the hydrogenated surface are explained by the low work function of diamond combined with graphitic patches on the surface. (C) 2002 American Vacuum Society.

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收藏

页码：238 / 242

页数：5

相关论文

共 14 条

[1] Simultaneous field emission and photoemission from diamond [J].

Bandis, C ;

Pate, BB .

APPLIED PHYSICS LETTERS, 1996, 69 (03) :366-368

[2] PHOTOELECTRIC-EMISSION FROM NEGATIVE-ELECTRON-AFFINITY DIAMOND(111) SURFACES - EXCITON BREAKUP VERSUS CONDUCTION-BAND EMISSION [J].

BANDIS, C ;

PATE, BB .

PHYSICAL REVIEW B, 1995, 52 (16) :12056-12071

[3] Hydrogen termination and electron emission from CVD diamond surfaces: a combined secondary electron emission, photoelectron emission microscopy, photoelectron yield, and field emission study [J].

Cui, JB ;

Ristein, J ;

Stammler, M ;

Janischowsky, K ;

Kleber, G ;

Ley, L .

DIAMOND AND RELATED MATERIALS, 2000, 9 (3-6) :1143-1147

[4] Electron affinity of the bare and hydrogen covered single crystal diamond (111) surface [J].

Cui, JB ;

Ristein, J ;

Ley, L .

PHYSICAL REVIEW LETTERS, 1998, 81 (02) :429-432

[5] Electron affinity and work function of differently oriented and doped diamond surfaces determined by photoelectron spectroscopy [J].

Diederich, L ;

Küttel, O ;

Aebi, P ;

Schlapbach, L .

SURFACE SCIENCE, 1998, 418 (01) :219-239

[6] Electron emission in intense electric fields [J].

Fowler, RH ;

Nordheim, L .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-CONTAINING PAPERS OF A MATHEMATICAL AND PHYSICAL CHARACTER, 1928, 119 (781) :173-181

[7] QUANTUM PHOTOYIELD OF DIAMOND(111) - STABLE NEGATIVE-AFFINITY EMITTER [J].

HIMPSEL, FJ ;

KNAPP, JA ;

VANVECHTEN, JA ;

EASTMAN, DE .

PHYSICAL REVIEW B, 1979, 20 (02) :624-627

[8] Mechanisms of electron field emission from diamond, diamond-like carbon, and nanostructured carbon [J].

Robertson, J .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1999, 17 (02) :659-665

[9] Ab initio calculation of electron affinities of diamond surfaces [J].

Rutter, MJ ;

Robertson, J .

PHYSICAL REVIEW B, 1998, 57 (15) :9241-9245

[10] PHYSICAL-PROPERTIES OF THIN-FILM FIELD-EMISSION CATHODES WITH MOLYBDENUM CONES [J].

SPINDT, CA ;

BRODIE, I ;

HUMPHREY, L ;

WESTERBERG, ER .

JOURNAL OF APPLIED PHYSICS, 1976, 47 (12) :5248-5263