Origin of the Monochromatic Photoemission Peak in Diamondoid Monolayers

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• 作者：William A. Clay ; Zhi Liu ; Wanli Yang ; Jason D. Fabbri ; Jeremy E. Dahl ; Robert M. K. Carlson ; Yun Sun ; Peter R. Schreiner ; Andrey A. Fokin ; Boryslav A. Tkachenko ; Nataliya A. Fokina ; Piero A. Pianetta
• 刊名：Nano Letters
• 出版年：2009
• 出版时间：January 14, 2009
• 年：2009
• 卷：9
• 期：1
• 页码：57-61
• 全文大小：161K
• 年卷期：v.9,no.1(January 14, 2009)
• ISSN：1530-6992

文摘

Recent photoemission experiments have discovered a highly monochromatized secondary electron peak emitted from diamondoid self-assembled monolayers on metal substrates. New experimental data and simulation results are presented to show that a combination of negative electron affinity and strong electron−phonon scattering is responsible for this behavior. The simulation results are generated using a simple Monte Carlo transport algorithm. The simulated spectra recreate the main spectral features of the measured ones.