DocumentCode :
3097261
Title :
Chemical defect generation and propagation on carbon nanotubes
Author :
Wang, YuHuang
Author_Institution :
Dept. of Chem. & Biochem., Univ. of Maryland, College Park, MD, USA
fYear :
2011
fDate :
7-9 Dec. 2011
Firstpage :
1
Lastpage :
2
Abstract :
Theoretical studies predict that the pattern of functional groups, or defects, will substantially affect the electrical and optical properties of low-dimensional systems such as single-walled carbon nanotubes (SWNTs) and graphene [1, 2]. Experimentally, it has been challenging to spatially control the defect generation and propagation on the graphene lattice. Recent experiments have demonstrated that diazonium chemistry and oxidative reactions occur on a SWNT sidewall at completely random atomic sites [3, 4]. The covalent modification of even a single site results in a substantial drop of electrical conductance[3] and stepwise quenching of exciton fluorescence in semiconducting nanotubes [4].
Keywords :
carbon nanotubes; defect states; electrical conductivity; elemental semiconductors; excitons; fluorescence; oxidation; radiation quenching; semiconductor nanotubes; C; chemical defect generation; chemical defect propagation; covalent modification; diazonium chemistry; electrical conductance; electrical properties; exciton fluorescence; graphene; low-dimensional systems; optical properties; oxidative reactions; semiconducting nanotubes; single-walled carbon nanotubes; stepwise quenching; Carbon nanotubes; Chemistry; Educational institutions; Fluorescence; Scanning electron microscopy; Substrates;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Semiconductor Device Research Symposium (ISDRS), 2011 International
Conference_Location :
College Park, MD
Print_ISBN :
978-1-4577-1755-0
Type :
conf
DOI :
10.1109/ISDRS.2011.6135133
Filename :
6135133
Link To Document :
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