%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 }