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Tip‐Induced Charging of Free Standing Semiconductor Nanowires and Carbon Nanotubes
Author(s) -
Schäfer Sebastian,
Wang Zhe,
Rammelberg Holger U.,
Kipp Tobias,
Mews Alf
Publication year - 2012
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.201200049
Subject(s) - nanowire , nanostructure , carbon nanotube , chemistry , semiconductor , nanotechnology , substrate (aquarium) , mechanical properties of carbon nanotubes , electron , electrostatic force microscope , chemical physics , optoelectronics , atomic force microscopy , nanotube , materials science , oceanography , physics , quantum mechanics , geology
We investigate the distribution of charges injected into one‐dimensional nanostructures like semiconductor nanowires and carbon nanotubes. The charges are injected by an atomic force microscope tip and monitored by means of electrostatic force microscopy. We demonstrate that the charges distribute rapidly along the axes of both types of nanostructures. The charges deposited on nanowires are shown to migrate to the substrate on a shorter time scale than those deposited on nanotubes, while the holes migrate even slower than the electrons. This behaviour is attributed to the amount and type of available trap states in the respective nanostructure.