Sulfur doped nanocrystalline diamond films as field enhancement based thermionic emitters and their role in energy conversion
F. Koeck, и R. Nemanich. Diamond and Related Materials, 14 (11-12):
2051--2054(2005)doi = 10.1016/j.diamond.2005.09.001.
Аннотация
Sulfur doped nanocrystalline diamond films, like other nanostructured carbon films, exhibit electron emission characterized by a spatial non-uniformity of the field enhancement factor. While field emission effects are observed at room temperature, an increase in emitter temperature is accompanied by an amplified emission current with a simultaneous drop in the threshold field. At low extraction fields a fit of the emission current to the Richardson equation indicates a material work function of ~2.5 eV. The Schottky formula describes thermionic emission at a moderate field and is utilized to determine the work function at an electric field of 0.8 V/mum with a value of ~1.7 eV and a concurrently reduced Richardson constant. This significant difference in the work function of 2.5 and 1.7 eV for 0.5 and 0.8V/mum, respectively can be attributed to field enhancement effects.
Описание
ScienceDirect - Diamond and Related Materials : Sulfur doped nanocrystalline diamond films as field enhancement based thermionic emitters and their role in energy conversion
%0 Journal Article
%1 a0122
%A Koeck, F.A.M.
%A Nemanich, R.J.
%B Proceedings of the 10th International Conference on New Diamond Science and Technology (ICNDST-10) - ICNDST-10 Special Issue
%D 2005
%J Diamond and Related Materials
%K CVD Doped Energy Field Thermionic conversion diamond emission nanocrystalline
%N 11-12
%P 2051--2054
%T Sulfur doped nanocrystalline diamond films as field enhancement based thermionic emitters and their role in energy conversion
%U http://www.sciencedirect.com/science/article/B6TWV-4H9GRFV-3/2/eb0623022530caa096b19a61e2aad80e
%V 14
%X Sulfur doped nanocrystalline diamond films, like other nanostructured carbon films, exhibit electron emission characterized by a spatial non-uniformity of the field enhancement factor. While field emission effects are observed at room temperature, an increase in emitter temperature is accompanied by an amplified emission current with a simultaneous drop in the threshold field. At low extraction fields a fit of the emission current to the Richardson equation indicates a material work function of ~2.5 eV. The Schottky formula describes thermionic emission at a moderate field and is utilized to determine the work function at an electric field of 0.8 V/mum with a value of ~1.7 eV and a concurrently reduced Richardson constant. This significant difference in the work function of 2.5 and 1.7 eV for 0.5 and 0.8V/mum, respectively can be attributed to field enhancement effects.
@article{a0122,
abstract = {Sulfur doped nanocrystalline diamond films, like other nanostructured carbon films, exhibit electron emission characterized by a spatial non-uniformity of the field enhancement factor. While field emission effects are observed at room temperature, an increase in emitter temperature is accompanied by an amplified emission current with a simultaneous drop in the threshold field. At low extraction fields a fit of the emission current to the Richardson equation indicates a material work function of ~2.5 eV. The Schottky formula describes thermionic emission at a moderate field and is utilized to determine the work function at an electric field of 0.8 V/[mu]m with a value of ~1.7 eV and a concurrently reduced Richardson constant. This significant difference in the work function of 2.5 and 1.7 eV for 0.5 and 0.8V/[mu]m, respectively can be attributed to field enhancement effects.},
added-at = {2007-08-07T20:37:41.000+0200},
author = {Koeck, F.A.M. and Nemanich, R.J.},
biburl = {https://www.bibsonomy.org/bibtex/24078a5efe6ca802517c1574a0a1628de/essential.beatfinger},
booktitle = {Proceedings of the 10th International Conference on New Diamond Science and Technology (ICNDST-10) - ICNDST-10 Special Issue},
description = {ScienceDirect - Diamond and Related Materials : Sulfur doped nanocrystalline diamond films as field enhancement based thermionic emitters and their role in energy conversion},
interhash = {3ea64f1b6618074b950e3718c9cd8751},
intrahash = {4078a5efe6ca802517c1574a0a1628de},
journal = {Diamond and Related Materials},
keywords = {CVD Doped Energy Field Thermionic conversion diamond emission nanocrystalline},
note = {doi = {10.1016/j.diamond.2005.09.001}},
number = {11-12},
pages = {2051--2054},
timestamp = {2007-08-07T20:37:41.000+0200},
title = {Sulfur doped nanocrystalline diamond films as field enhancement based thermionic emitters and their role in energy conversion},
url = {http://www.sciencedirect.com/science/article/B6TWV-4H9GRFV-3/2/eb0623022530caa096b19a61e2aad80e},
volume = 14,
year = 2005
}