Scanning tunneling microscopy and spactroscopy of electron-irradiated thin films os C60 molecules
Scanning tunneling microscopy and spactroscopy of electron-irradiated thin films os C60 molecules
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C60 分子电子辐照薄膜的扫描隧道显微镜和光谱学
DOI：
10.1016/j.carbon.2011.01.004
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发表时间：
2011
期刊：
影响因子：
10.9
通讯作者：
M. Aono and T. Nakayama
中科院分区：
文献类型：
--
作者：
M. Nakaya;M. Aono and T. Nakayama
我们已经使用扫描隧道显微镜和光谱，以确定电子辐照对薄膜的C60分子的影响。当用100 eV或2keV的电子辐照时，在C60膜中产生分子团簇作为初始产物。团簇中的分子表现出与原始C60分子不同的电子结构;团簇中心的分子表现出金属或半金属性质，其他分子在填充态中表现出额外的态密度。C60薄膜在较长时间的连续电子辐照下被团簇覆盖，改变了薄膜的电子结构。我们认为，电子诱导的C60分子之间的聚合是负责所观察到的改变的C60薄膜。
We have used scanning tunneling microscopy and spectroscopy to determine the effect of electron irradiation on thin films of C60molecules. Upon the irradiation of electrons with an energy of 100eV or 2keV, clusters of molecules are created in the C60films as the initial products. The molecules in the clusters exhibit different electronic structures from that of pristine C60molecules; the molecule at the center of the cluster exhibits a metallic or semimetallic nature and the other molecules exhibit an additional density of states in the filled states. C60thin films are covered with clusters upon continuous electron irradiation for a longer duration, changing the electronic structure of the films. We consider that the electron-induced polymerization between C60molecules is responsible for the observed alteration of the C60thin films.