Observation of a negative electron affinity for boron nitride

被引：162

作者：

Powers, MJ

Benjamin, MC

Porter, LM

Nemanich, RJ

Davis, RF

Cuomo, JJ

Doll, GL

Harris, SJ

机构：

[1] N CAROLINA STATE UNIV,DEPT MAT SCI & ENGN,RALEIGH,NC 27695

[2] GM CORP,CTR RES & DEV,DEPT PHYS CHEM,WARREN,MI 48090

来源：

APPLIED PHYSICS LETTERS | 1995年 / 67卷 / 26期

关键词：

D O I：

10.1063/1.115315

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This study reports UV-photoemission (UPS) measurements made on boron nitride crystals and thin films. The materials examined are commercial grade c-BN powder and thin films of BN deposited with ion beam assisted e-beam evaporation and laser ablation. The thin film samples examined exhibited varying amounts of sp(3) (cubic) and sp(2) (hexagonal, amorphous) bonding as determined by FTIR measurements. The UPS measurements displayed the spectral distribution of the low energy photoemitted electrons and the total energy width of the spectra. These characteristics can be related to the electron affinity. The measurements on several of the BN powder and thin film samples revealed features in the emission spectra which are indicative of a negative electron affinity (NEA) surface. (C) 1995 American Institute of Physics.

引用

页码：3912 / 3914

页数：3

共 16 条

[1] PREPARATION, PROPERTIES AND APPLICATIONS OF BORON-NITRIDE THIN-FILMS [J].

ARYA, SPS ;

DAMICO, A .

THIN SOLID FILMS, 1988, 157 (02) :267-282

[2]

BENJAMIN MC, 1994, APPL PHYS LETT, V64, P3287

[3]

CUOMO JJ, 1991, IBM TECH DISCLOSURE, V321

[4]

DOLL GL, 1990, MATER RES SOC SYMP P, V191, P55, DOI 10.1557/PROC-191-55

[5]

DOLL GL, 1994, I PHYS C SER, V137, P449

[6] NORMAL MODES IN HEXAGONAL BORON NITRIDE [J].

GEICK, R ;

PERRY, CH ;

RUPPRECH.G .

PHYSICAL REVIEW, 1966, 146 (02) :543-&

[7]

GEILISSE PJ, 1967, PHYS REV, V155, P1069

[8] 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

[9] GROWTH AND CHARACTERIZATION OF CUBIC BORON-NITRIDE THIN-FILMS [J].

KESTER, DJ ;

AILEY, KS ;

LICHTENWALNER, DJ ;

DAVIS, RF .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1994, 12 (06) :3074-3081

[10]

LAURENCE V, 1991, MAT SCI ENG B, V10, P149

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