Chemical vapor sensing properties of graphene based on geometrical evaluation

Sukju Hwang; Juhwan Lim; Hyung Goo Park; Whan Kyun Kim; Duck Hwan Kim; In Sang Song; Jae Hun Kim; Seok Lee; Deok Ha Woo; Seong Chan Jun

doi:10.1016/j.cap.2011.12.021

Chemical vapor sensing properties of graphene based on geometrical evaluation

Sukju Hwang, Juhwan Lim, Hyung Goo Park, Whan Kyun Kim, Duck Hwan Kim, In Sang Song, Jae Hun Kim, Seok Lee, Deok Ha Woo, Seong Chan Jun

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

Graphene is a promising candidate for chemical vapor sensing. We prepared graphene sheets from highly oriented pyrolytic graphite through mechanical cleavage in order to investigate their responses to NH ₃ and NO ₂ as electron donors and acceptors, respectively. We investigated how the geometric characteristics of graphene, such as length-to-width (L/w) ratio and number of layers, affect chemical sensing properties at room temperature and ambient atmosphere. In this study, the L/w ratio of an individual graphene sheet, which is related to graphene conductivity, dominated the NH ₃ sensing characteristics, while the number of graphene layers had no significant effect. We also studied the effects of various thermal treatments on graphene sensitivity and recovery time in an ambient atmosphere. This study confirms the effects of geometry, operation temperature and gas concentration on the NH ₃ and NO ₂ sensing performances of graphene.

Original language	English
Pages (from-to)	1017-1022
Number of pages	6
Journal	Current Applied Physics
Volume	12
Issue number	4
DOIs	https://doi.org/10.1016/j.cap.2011.12.021
Publication status	Published - 2012 Jul

Bibliographical note

Funding Information:
Sukju Hwang and Juhwan Lim have equally contributed to this work. This work was partially supported by Samsung Advanced Institute of Technology (2010-8-2239), the Priority Research Centers Program (2009-0093823), the Pioneer Research Center Program (2010-0019313), and the Basic Science Research Program (2011-8-0856) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (MEST) of the Korean government.

All Science Journal Classification (ASJC) codes

Materials Science(all)
Physics and Astronomy(all)

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10.1016/j.cap.2011.12.021

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title = "Chemical vapor sensing properties of graphene based on geometrical evaluation",

abstract = "Graphene is a promising candidate for chemical vapor sensing. We prepared graphene sheets from highly oriented pyrolytic graphite through mechanical cleavage in order to investigate their responses to NH 3 and NO 2 as electron donors and acceptors, respectively. We investigated how the geometric characteristics of graphene, such as length-to-width (L/w) ratio and number of layers, affect chemical sensing properties at room temperature and ambient atmosphere. In this study, the L/w ratio of an individual graphene sheet, which is related to graphene conductivity, dominated the NH 3 sensing characteristics, while the number of graphene layers had no significant effect. We also studied the effects of various thermal treatments on graphene sensitivity and recovery time in an ambient atmosphere. This study confirms the effects of geometry, operation temperature and gas concentration on the NH 3 and NO 2 sensing performances of graphene.",

author = "Sukju Hwang and Juhwan Lim and Park, {Hyung Goo} and Kim, {Whan Kyun} and Kim, {Duck Hwan} and Song, {In Sang} and Kim, {Jae Hun} and Seok Lee and Woo, {Deok Ha} and {Chan Jun}, Seong",

note = "Funding Information: Sukju Hwang and Juhwan Lim have equally contributed to this work. This work was partially supported by Samsung Advanced Institute of Technology (2010-8-2239), the Priority Research Centers Program (2009-0093823), the Pioneer Research Center Program (2010-0019313), and the Basic Science Research Program (2011-8-0856) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (MEST) of the Korean government.",

year = "2012",

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doi = "10.1016/j.cap.2011.12.021",

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AU - Song, In Sang

AU - Kim, Jae Hun

AU - Lee, Seok

AU - Woo, Deok Ha

AU - Chan Jun, Seong

N1 - Funding Information: Sukju Hwang and Juhwan Lim have equally contributed to this work. This work was partially supported by Samsung Advanced Institute of Technology (2010-8-2239), the Priority Research Centers Program (2009-0093823), the Pioneer Research Center Program (2010-0019313), and the Basic Science Research Program (2011-8-0856) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (MEST) of the Korean government.

PY - 2012/7

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Chemical vapor sensing properties of graphene based on geometrical evaluation

Abstract

Bibliographical note

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