Defect Induced Lowering of Work Function in Graphite-Like Materials
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Конференция |
12th European Conference on Diamond, Diamond-Like Materials, Carbon Nanotubes, Nitrides & Silicon Carbide
2 сент. 2001 г. - 30 нояб. 2019 г.
,
Budapest
|
| Журнал |
Diamond and Related Materials
ISSN: 0925-9635
, E-ISSN: 1879-0062
|
| Вых. Данные |
Год: 2002,
Том: 11,
Номер: 3-6,
Страницы: 813-818
Страниц
: 6
DOI:
10.1016/S0925-9635(01)00535-0
|
| Ключевые слова |
Carbon, D.c. plasma CVD, Field emission, Sp2/sp3 bonding |
| Авторы |
Obraztsov A.N.
1,2
,
Volkov A.P.
1
,
Boronin A.I.
3
,
Kosheev S.V.
3
|
| Организации |
| 1 |
Moscow State University, Moscow 119899, Russia
|
| 2 |
Kochi University of Technology, Kochi 782-8502, Japan
|
| 3 |
Institute of Catalysis, Novosibirsk 630090, Russia
|
|
Different carbon materials have shown unusually high efficiency of electron field emission. The device application of the carbon cold cathodes requires a fundamental understanding of the emission mechanism. We describe the emission properties of carbon thin films grown by chemical vapor deposition. The structure, phase composition and electronic properties peculiar to the film material were investigated. New model of electron emission sites and mechanism of field electron emission are proposed. In accordance with the proposed model the electron emission in carbon materials occurs from sp3-like defects in an sp2 network of graphite-like material. The corresponding mechanism of field emission consists of electrons escaping into vacuum by tunneling from the Fermi level of the graphite material through the atomically thin sp3-like layer and the energy barrier on its surface.