Similarity in field electron emission from nanocrystalline diamond and related materials

被引：40

作者：

Frolov, VD ^{[1
]}

Karabutov, AV ^{[1
]}

Pimenov, SM ^{[1
]}

Konov, VI ^{[1
]}

Ageev, VP ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Gen Phys, Moscow 117942, Russia

来源：

基金：

俄罗斯基础研究基金会;

关键词：

diamond films; nitrides; emission properties; correlations;

D O I：

10.1016/S0925-9635(01)00402-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Results on a complex study of macroscopic and microscopic electronic properties of nanocrystalline diamond and related material (BN, GaN, CN) films are presented. It was found that all the samples studied showed similar dependencies of macroscopic emission parameters (the Fowler-Nordheim work function, the effective emitting area) on the film emissivity. Also, some microscopic properties were found to be common for all the films tested. It was generally observed that field electron emission occurred at nanosized regions on the boundary of high and low resistivity areas, and peaks of the emission intensity were associated with a lowered surface electron potential. Based on the experimental data, a mechanism of field electron emission from the surface of nanocrystalline films is proposed. We suppose that electrons are transported from narrow conducting channels into vacuum through specific low-dimensional regions, the electronic properties of which, due to the quantum size effect, are different from the bulk material. In this case the base material grains play a role of the conductive channel-containing matrix as well as a heat sink. Details of the new low-field emission mechanism including the filling of discrete energy states, and the decrease in the work function under the action of electric field are discussed. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：1719 / 1726

页数：8

共 25 条

[11] FULLERENES AS PRECURSORS FOR DIAMOND FILM GROWTH WITHOUT HYDROGEN OR OXYGEN ADDITIONS [J].

GRUEN, DM ;

LIU, SZ ;

KRAUSS, AR ;

LUO, JS ;

PAN, XZ .

APPLIED PHYSICS LETTERS, 1994, 64 (12) :1502-1504

[12] BUCKYBALL MICROWAVE PLASMAS - FRAGMENTATION AND DIAMOND-FILM GROWTH [J].

GRUEN, DM ;

LIU, SZ ;

KRAUSS, AR ;

PAN, XZ .

JOURNAL OF APPLIED PHYSICS, 1994, 75 (03) :1758-1763

[13]

Karabutov A. V., 1997, Journal of Chemical Vapor Deposition, V5, P348

[14]

Karabutov A. V., 1999, Journal of Wide Bandgap Materials, V7, P68, DOI 10.1106/D0WE-86B2-YW0J-8WKQ

[15] Grain boundary field electron emission from CVD diamond films [J].

Karabutov, AV ;

Frolov, VD ;

Pimenov, SM ;

Konov, VI .

[16] Peculiarities of field electron emission from CVD diamond films [J].

Karabutov, AV ;

Konov, VI ;

Pimenov, SM ;

Frolov, VD ;

Obraztsova, ED ;

Polyakov, VI ;

Rossukanyi, NM .

JOURNAL DE PHYSIQUE IV, 1996, 6 (C5) :113-118

[17] Comparision of field electron emission from DLC films produced by four different deposition techniques [J].

Karabutov, AV ;

Konov, VI ;

Ralchenko, VG ;

Obraztsova, ED ;

Frolov, VD ;

Uglov, SA ;

Scheibe, HJ ;

Strelnitskij, VE ;

Polyakov, VI .

[18] DC-ARC PLASMA DEPOSITION OF SMOOTH NANOCRYSTALLINE DIAMOND FILMS [J].

KONOV, VI ;

SMOLIN, AA ;

RALCHENKO, VG ;

PIMENOV, SM ;

OBRAZTSOVA, ED ;

LOUBNIN, EN ;

METEV, SM ;

SEPOLD, G .

[19] Electron field emission from thin fine-grained CVD diamond films [J].

Lacher, F ;

Wild, C ;

Behr, D ;

Koidl, P .

[20]

Smolin A. A., 1993, Diamond Films and Technology, V3, P1

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