Lithium monolayers on single crystal C(100) oxygen-terminated diamond
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Thin lithium layers on oxygenated C(100) boron-doped diamond have been observed using x-ray photoemission spectroscopy. Conductive boron-doped diamond was oxygen- terminated using an ozone cleaner. Lithium was evaporated onto the oxygen-terminated C(100) surface and an as-grown hydrogen terminated surface to a thickness of approximately 50 nm. After washing with deionised water, significant lithium signal is still detected on oxygenated diamond, but not on hydrogenated diamond, indicating a strongly bound lithium-oxygen surface layer is formed, as predicted by recent theoretical modeling.
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O'Donnell, Kane; Martin, T.; Edmonds, M.; Tadich, A.; Thomsen, L.; Ristein, J.; Pakes, C.; Fox, N.; Ley, L. (2014)This paper reviews electron emission from negative electron affinity (NEA) diamond and gives account of the recent developments in alternatives to hydrogen-termination for producing NEA diamond surfaces, particularly ...
O’Donnell, Kane; Edmonds, M.; Ristein, J.; Tadich, A.; Thomsen, L.; Wu, Q.; Pakes, C.; Ley, L. (2013)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 ...
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