类金刚石单层中单色光发射峰的起源。

Origin of the monochromatic photoemission peak in diamondoid monolayers.

作者信息

Clay William A, Liu Zhi, Yang Wanli, Fabbri Jason D, Dahl Jeremy E, Carlson Robert M K, Sun Yun, Schreiner Peter R, Fokin Andrey A, Tkachenko Boryslav A, Fokina Nataliya A, Pianetta Piero A, Melosh Nicholas, Shen Zhi-Xun

机构信息

Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA.

出版信息

Nano Lett. 2009 Jan;9(1):57-61. doi: 10.1021/nl802310k.

DOI:10.1021/nl802310k

PMID:18975993

Abstract

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.

摘要

最近的光发射实验发现，在金属衬底上的类金刚石自组装单分子层会发射出高度单色化的二次电子峰。本文给出了新的实验数据和模拟结果，以表明负电子亲和势和强电子 - 声子散射的组合是造成这种现象的原因。模拟结果是使用简单的蒙特卡罗输运算法生成的。模拟光谱重现了测量光谱的主要特征。