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- W2800949963 abstract "Probing electronic structure of metal–semiconductor heterostructures at the local scale is important both from the fundamental and technological point of views. Here, we report on the nanoscale probing of electronic structures of gold–lead sulfide nanodumbbells using ultra high-vacuum scanning tunneling microscopy and spectroscopy techniques. A single lead sulfide nanorod shows delocalization of both conduction and valence bands along the length of the nanorod. The electronic structure of the lead sulfide nanorod is significantly altered upon formation of metal contacts at the tips of lead sulfide nanorod in the form of nanodumbbells. The nanodumbbell shows partial delocalization of the conduction band along the length while the valence band is localized to the semiconductor region of the nanodumbell. Comparison of the tunneling spectra of the pristine nanorod and nanodumbbell reveals n-type behavior of the nanodumbbell owing to the perturbation of energy levels of pristine nanorod by metal contacts donating the electrons to the semiconductor section." @default.
- W2800949963 created "2018-05-17" @default.
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- W2800949963 date "2018-04-27" @default.
- W2800949963 modified "2023-09-30" @default.
- W2800949963 title "Probing Local Electronic Structures of Au–PbS Metal–Semiconductor Nanodumbbells" @default.
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- W2800949963 doi "https://doi.org/10.1021/acsanm.8b00097" @default.
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