Combined visible light photo-emission and low temperature thermionic emission from nitrogen doped diamond films

Tianyin Sun; Franz A M Koeck; Chiyu Zhu; Robert Nemanich

doi:10.1063/1.3658638

Combined visible light photo-emission and low temperature thermionic emission from nitrogen doped diamond films

Tianyin Sun, Franz A M Koeck, Chiyu Zhu, Robert Nemanich

Physics

Research output: Contribution to journal › Article › peer-review

43 Scopus citations

Abstract

This study reports a photoemission threshold of ∼1.5 eV from nitrogen-doped nanocrystalline diamond, which ranks among the lowest photo-threshold of any non-cesiated material. Diamond films on molybdenum substrates have been illuminated with light from 340 to 550 nm, and the electron emission spectrum has been recorded from ambient to ∼320 C. The results display combined thermionic and photo-electron emission limited by the same low work function and indicate that the two emission processes are spatially separated. These results indicate the potential for a solar energy conversion structure that takes advantage of both photoemission and thermionic emission.

Original language	English (US)
Article number	202101
Journal	Applied Physics Letters
Volume	99
Issue number	20
DOIs	https://doi.org/10.1063/1.3658638
State	Published - Nov 14 2011

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Combined visible light photo-emission and low temperature thermionic emission from nitrogen doped diamond films",

abstract = "This study reports a photoemission threshold of ∼1.5 eV from nitrogen-doped nanocrystalline diamond, which ranks among the lowest photo-threshold of any non-cesiated material. Diamond films on molybdenum substrates have been illuminated with light from 340 to 550 nm, and the electron emission spectrum has been recorded from ambient to ∼320 C. The results display combined thermionic and photo-electron emission limited by the same low work function and indicate that the two emission processes are spatially separated. These results indicate the potential for a solar energy conversion structure that takes advantage of both photoemission and thermionic emission.",

author = "Tianyin Sun and Koeck, {Franz A M} and Chiyu Zhu and Robert Nemanich",

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AU - Sun, Tianyin

AU - Koeck, Franz A M

AU - Zhu, Chiyu

AU - Nemanich, Robert

PY - 2011/11/14

Y1 - 2011/11/14

N2 - This study reports a photoemission threshold of ∼1.5 eV from nitrogen-doped nanocrystalline diamond, which ranks among the lowest photo-threshold of any non-cesiated material. Diamond films on molybdenum substrates have been illuminated with light from 340 to 550 nm, and the electron emission spectrum has been recorded from ambient to ∼320 C. The results display combined thermionic and photo-electron emission limited by the same low work function and indicate that the two emission processes are spatially separated. These results indicate the potential for a solar energy conversion structure that takes advantage of both photoemission and thermionic emission.

AB - This study reports a photoemission threshold of ∼1.5 eV from nitrogen-doped nanocrystalline diamond, which ranks among the lowest photo-threshold of any non-cesiated material. Diamond films on molybdenum substrates have been illuminated with light from 340 to 550 nm, and the electron emission spectrum has been recorded from ambient to ∼320 C. The results display combined thermionic and photo-electron emission limited by the same low work function and indicate that the two emission processes are spatially separated. These results indicate the potential for a solar energy conversion structure that takes advantage of both photoemission and thermionic emission.

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Combined visible light photo-emission and low temperature thermionic emission from nitrogen doped diamond films

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