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|Title:||Tuning the electron affinity and secondary electron emission of diamond (100) surfaces by diels-alder reaction|
|Authors:||Qi, D. |
|Citation:||Qi, D., Liu, L., Gao, X., Ouyang, T., Chen, S., Loh, K.P., Wee, A.T.S. (2007-09-11). Tuning the electron affinity and secondary electron emission of diamond (100) surfaces by diels-alder reaction. Langmuir 23 (19) : 9722-9727. ScholarBank@NUS Repository. https://doi.org/10.1021/la701285h|
|Abstract:||The tuning of electron affinity and secondary electron emission on diamond (100) surfaces due to cycloaddition with 1,3-butadiene is investigated by photoemission experiments and density functional theory (DFT) calculations. A significant reduction in electron affinity up to 0.7 eV and enhancement of secondary electron emission were observed after 1,3-butadiene adsorption. The lowering of vacuum level via 1,3-butadiene adsorption is supported by DFT calculations. The C-H bonds in the covalently bonded organics on diamond contribute to the enhanced secondary electron emission and reduced electron affinity in a mechanism similar to that of C-H bonds on hydrogenated diamond surfaces. This combination of strong secondary emission and low electron affinity by the organic functionalization of diamond has potential applications in diamond-based molecular electronic devices. © 2007 American Chemical Society.|
|Appears in Collections:||Staff Publications|
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