Properties Of Hydrogen Terminated Diamond As A Photocathode

Authors

J. D. Rameau, Brookhaven National LaboratoryFollow
J. Smedley, Brookhaven National LaboratoryFollow
E. M. Muller, Stony Brook University
T. E. Kidd, Brookhaven National LaboratoryFollow
P. D. Johnson, Brookhaven National LaboratoryFollow

Document Type

Article

Journal/Book/Conference Title

Physical Review Letters

Volume

106

Issue

13

Abstract

Electron emission from the negative electron affinity (NEA) surface of hydrogen terminated, boron doped diamond in the [100] orientation is investigated using angle resolved photoemission spectroscopy (ARPES). ARPES measurements using 16AAeV synchrotron and 6AAeV laser light are compared and found to show a catastrophic failure of the sudden approximation. While the high energy photoemission is found to yield little information regarding the NEA, low energy laser ARPES reveals for the first time that the NEA results from a novel Franck-Condon mechanism coupling electrons in the conduction band to the vacuum. The result opens the door to the development of a new class of NEA electron emitter based on this effect. © 2011 American Physical Society.

Department

Department of Physics

Original Publication Date

3-30-2011

DOI of published version

10.1103/PhysRevLett.106.137602

Recommended Citation

Rameau, J. D.; Smedley, J.; Muller, E. M.; Kidd, T. E.; and Johnson, P. D., "Properties Of Hydrogen Terminated Diamond As A Photocathode" (2011). Faculty Publications. 1959.
https://scholarworks.uni.edu/facpub/1959