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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 29, Number 5
BKCSDE 29(5)
May 20, 2008 

 
Title
Current-voltage Characteristics of Water-adsorbed Imogolite Film
Author
Jaehong Park, Jungwoo Lee, Sunyoung Chang, Taehee Park, Bongwoo Han, Jin Wook Han*, Whikun Yi*
Keywords
Imogolite, Field effect transistor, pH, I-V character
Abstract
Electric current flow was observed through imogolite film when imogolite ((HO)3Al2O3SiOH) was exposed to water molecules and connected to external electrodes. Current flow was due to the bound water on the surface of imogolite. Current flow increased as the pH of the water decreased. The current-voltage (I-V) measurements from a field effective transistor (FET) using H2O/imogolite film revealed that the current carrier in H2O/ imogolite had p-type characteristics, i.e. the carrier was probably H+. The possible mechanism for current transportation in imogolite/water was also suggested in this paper.
Page
1048 - 1050
Full Text
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