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Electron affinity study of adamantane on Si(1 1 1) |
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| Authors: | W. Meevasana R. Supruangnet O. Topon P. Songsiriritthigul |
| Affiliation: | a Synchrotron Light Research Institute, Nakhon Ratchasima 30000, Thailand b Department of Physics, Stanford University, Stanford, CA 94305, USA c School of Physics, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand d ThEP Center, CHE, 328 Si Ayutthaya Rd., Bangkok 10400, Thailand e Department of Physics, Khon Kaen University, Khon Kaen 40002, Thailand |
| Abstract: | Recently, tetramantane, a member of diamondoid series (C4n+6H4n+12), has shown to exhibit negative-electron-affinity effect which has a potential use for efficient electron emitting devices. Here, we explore the electronic property of adamantane (C10H16), the smallest member of the series. We prepare adamantane films on Si(1 1 1) substrates and then study their electronic structure with photoemission spectroscopy. Photoelectron spectra of adamantane on Si(1 1 1) have shown a peak at low-kinetic energy which could be a generic property of diamondoids. The possibility of the negative-electron-affinity effect in adamantane is further discussed. |
| Keywords: | 73.22.&minus f, 79.60.&minus i |
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