A simple method for the determination of doping type in nanomaterials based on electrical response to humidity

被引：20

作者：

Han, Jin-Woo ^{[1
]}

Kim, Beomseok ^{[1
]}

Kobayashi, Nobuhiko P. ^{[2
]}

Li, Jing ^{[1
]}

Meyyappan, M. ^{[1
]}

机构：

[1] NASA, Ames Res Ctr, Ctr Nanotechnol, Moffett Field, CA 94035 USA

[2] Univ Calif Santa Cruz, Dept Elect Engn, Santa Cruz, CA 95064 USA

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 14期

关键词：

CARBON NANOTUBES; GLASS SUBSTRATE; NANOWIRE; SENSORS; BREATH; SENSITIVITY; TRANSISTORS; SURFACE;

D O I：

10.1063/1.4757609

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A simple method to determine the doping type of inorganic nanomaterials is presented. The surface reaction with moisture results in distinctive electrical responses depending on the doping type of the material. The moisture acts as an electron donor, releasing electrons to the semiconductor materials. Thus, the resistance of p-type materials increases due to the withdrawal of holes, while that of n-type decreases due to electron donation. Compared to spectroscopy and Hall measurement techniques, the present method is a simple and fast approach for determining the doping types, enabling fast feedback in material research as well as in device prototyping. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4757609]

引用

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