Diamond Surfaces with Air-Stable Negative Electron Affinity and Giant Electron Yield Enhancement
The presence of an air-stable negative electron affinity (NEA) on lithium-covered oxygen-terminated diamond after a thermal activation process is demonstrated. The NEA is unequivocally established by the onset of photoelectron yield at the bandgap energy of 5.5 eV. This surface exhibits a secondary...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Published: |
Wiley
2013
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/16614 |
| _version_ | 1848749227346231296 |
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| author | O’Donnell, Kane Edmonds, M. Ristein, J. Tadich, A. Thomsen, L. Wu, Q. Pakes, C. Ley, L. |
| author_facet | O’Donnell, Kane Edmonds, M. Ristein, J. Tadich, A. Thomsen, L. Wu, Q. Pakes, C. Ley, L. |
| author_sort | O’Donnell, Kane |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The presence of an air-stable negative electron affinity (NEA) on lithium-covered oxygen-terminated diamond after a thermal activation process is demonstrated. The NEA is unequivocally established by the onset of photoelectron yield at the bandgap energy of 5.5 eV. This surface exhibits a secondary electron yield enhancement by a factor of 200, compared to a surface with positive electron affinity. The surface chemistry leading to the necessary surface dipole was elucidated by core-level photoemission spectroscopy in conjunction with previous theoretical calculations. The insensitivity to the details of the deposition process opens a route to practical and robust negative-electron affinity devices based on diamond. |
| first_indexed | 2025-11-14T07:17:35Z |
| format | Journal Article |
| id | curtin-20.500.11937-16614 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:17:35Z |
| publishDate | 2013 |
| publisher | Wiley |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-166142017-09-13T15:43:29Z Diamond Surfaces with Air-Stable Negative Electron Affinity and Giant Electron Yield Enhancement O’Donnell, Kane Edmonds, M. Ristein, J. Tadich, A. Thomsen, L. Wu, Q. Pakes, C. Ley, L. negative electron affinity lithiation surface modification diamond electron emission The presence of an air-stable negative electron affinity (NEA) on lithium-covered oxygen-terminated diamond after a thermal activation process is demonstrated. The NEA is unequivocally established by the onset of photoelectron yield at the bandgap energy of 5.5 eV. This surface exhibits a secondary electron yield enhancement by a factor of 200, compared to a surface with positive electron affinity. The surface chemistry leading to the necessary surface dipole was elucidated by core-level photoemission spectroscopy in conjunction with previous theoretical calculations. The insensitivity to the details of the deposition process opens a route to practical and robust negative-electron affinity devices based on diamond. 2013 Journal Article http://hdl.handle.net/20.500.11937/16614 10.1002/adfm.201301424 Wiley restricted |
| spellingShingle | negative electron affinity lithiation surface modification diamond electron emission O’Donnell, Kane Edmonds, M. Ristein, J. Tadich, A. Thomsen, L. Wu, Q. Pakes, C. Ley, L. Diamond Surfaces with Air-Stable Negative Electron Affinity and Giant Electron Yield Enhancement |
| title | Diamond Surfaces with Air-Stable Negative Electron Affinity and Giant Electron Yield Enhancement |
| title_full | Diamond Surfaces with Air-Stable Negative Electron Affinity and Giant Electron Yield Enhancement |
| title_fullStr | Diamond Surfaces with Air-Stable Negative Electron Affinity and Giant Electron Yield Enhancement |
| title_full_unstemmed | Diamond Surfaces with Air-Stable Negative Electron Affinity and Giant Electron Yield Enhancement |
| title_short | Diamond Surfaces with Air-Stable Negative Electron Affinity and Giant Electron Yield Enhancement |
| title_sort | diamond surfaces with air-stable negative electron affinity and giant electron yield enhancement |
| topic | negative electron affinity lithiation surface modification diamond electron emission |
| url | http://hdl.handle.net/20.500.11937/16614 |