Extremely high response of electrostatically exfoliated few layer graphene to ammonia adsorption

被引：19

作者：

Antonova, I. V. ^{[1
]}

Mutilin, S. V. ^{[1
]}

Seleznev, V. A. ^{[1
]}

Soots, R. A. ^{[1
]}

Volodin, V. A. ^{[1
,2
]}

Prinz, V. Ya ^{[1
]}

机构：

[1] AV Rzhanov Inst Semicond Phys SB RAS, Novosibirsk 630090, Russia

[2] Novosibirsk State Univ, Ctr Sci & Educ, Novosibirsk 630090, Russia

来源：

NANOTECHNOLOGY | 2011年 / 22卷 / 28期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1088/0957-4484/22/28/285502

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Extremely high gas sensing properties of p-type few layer graphene flakes exfoliated from highly oriented pyrolytic graphite have been demonstrated. The current response to ammonia adsorption is strongly dependent on film thickness and is higher than that for graphene by 1-8 orders of magnitude. A maximal response was found for sample thickness similar to 2 nm. The effect is attributed to the formation of multiple p-n-p junctions at the grain boundaries in the polycrystalline graphene flakes exposed to ammonia-containing ambient.

引用

页数：5

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