Fast responsive gas sensor of vertically aligned fluorine-doped tin oxide nanorod thin film

Chan Woo Cho; Jong Heun Lee; Doh Hyung Riu; Chang Yeoul Kim

doi:10.1143/JJAP.51.045001

Fast responsive gas sensor of vertically aligned fluorine-doped tin oxide nanorod thin film

Chan Woo Cho, Jong Heun Lee, Doh Hyung Riu, Chang Yeoul Kim

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

17 Citations (Scopus)

Abstract

We prepared fluorine-doped tin oxide (FTO) nanorod films and a conventional FTO thin film for the application of a semiconducting gas sensor by spray pyrolysis method. The lengths of FTO nanorods (FTON, 100 and 500 nm) were controlled by changing deposition times, and FTO thin film (FTOT) was also prepared as a reference. The gas sensitivity test shows FTON with long nanorods had higher sensitivity for both hydrogen and ethanol gases but slow response and recovery times, despite an advantage of the higher gas sensitivity. FTO nanorod film with short length about 100nm showed relatively lower sensitivity, but fast gas response and recovery characteristics. The fast response and recovery for the analyte gases are attributed to the conductance of FTO nanorods, which is closely related to the diameter and length of nanorods.

Original language	English
Article number	045001
Journal	Japanese journal of applied physics
Volume	51
Issue number	4 PART 1
DOIs	https://doi.org/10.1143/JJAP.51.045001
Publication status	Published - 2012 Apr

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.51.045001

Cite this

@article{6eaf1694214443f4b231ba61d0556b62,

title = "Fast responsive gas sensor of vertically aligned fluorine-doped tin oxide nanorod thin film",

abstract = "We prepared fluorine-doped tin oxide (FTO) nanorod films and a conventional FTO thin film for the application of a semiconducting gas sensor by spray pyrolysis method. The lengths of FTO nanorods (FTON, 100 and 500 nm) were controlled by changing deposition times, and FTO thin film (FTOT) was also prepared as a reference. The gas sensitivity test shows FTON with long nanorods had higher sensitivity for both hydrogen and ethanol gases but slow response and recovery times, despite an advantage of the higher gas sensitivity. FTO nanorod film with short length about 100nm showed relatively lower sensitivity, but fast gas response and recovery characteristics. The fast response and recovery for the analyte gases are attributed to the conductance of FTO nanorods, which is closely related to the diameter and length of nanorods.",

author = "Cho, {Chan Woo} and Lee, {Jong Heun} and Riu, {Doh Hyung} and Kim, {Chang Yeoul}",

year = "2012",

month = apr,

doi = "10.1143/JJAP.51.045001",

language = "English",

volume = "51",

journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",

issn = "0021-4922",

publisher = "Japan Society of Applied Physics",

number = "4 PART 1",

}

TY - JOUR

T1 - Fast responsive gas sensor of vertically aligned fluorine-doped tin oxide nanorod thin film

AU - Cho, Chan Woo

AU - Lee, Jong Heun

AU - Riu, Doh Hyung

AU - Kim, Chang Yeoul

PY - 2012/4

Y1 - 2012/4

N2 - We prepared fluorine-doped tin oxide (FTO) nanorod films and a conventional FTO thin film for the application of a semiconducting gas sensor by spray pyrolysis method. The lengths of FTO nanorods (FTON, 100 and 500 nm) were controlled by changing deposition times, and FTO thin film (FTOT) was also prepared as a reference. The gas sensitivity test shows FTON with long nanorods had higher sensitivity for both hydrogen and ethanol gases but slow response and recovery times, despite an advantage of the higher gas sensitivity. FTO nanorod film with short length about 100nm showed relatively lower sensitivity, but fast gas response and recovery characteristics. The fast response and recovery for the analyte gases are attributed to the conductance of FTO nanorods, which is closely related to the diameter and length of nanorods.

AB - We prepared fluorine-doped tin oxide (FTO) nanorod films and a conventional FTO thin film for the application of a semiconducting gas sensor by spray pyrolysis method. The lengths of FTO nanorods (FTON, 100 and 500 nm) were controlled by changing deposition times, and FTO thin film (FTOT) was also prepared as a reference. The gas sensitivity test shows FTON with long nanorods had higher sensitivity for both hydrogen and ethanol gases but slow response and recovery times, despite an advantage of the higher gas sensitivity. FTO nanorod film with short length about 100nm showed relatively lower sensitivity, but fast gas response and recovery characteristics. The fast response and recovery for the analyte gases are attributed to the conductance of FTO nanorods, which is closely related to the diameter and length of nanorods.

UR - http://www.scopus.com/inward/record.url?scp=84860490282&partnerID=8YFLogxK

U2 - 10.1143/JJAP.51.045001

DO - 10.1143/JJAP.51.045001

M3 - Article

AN - SCOPUS:84860490282

SN - 0021-4922

VL - 51

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

IS - 4 PART 1

M1 - 045001

ER -

Fast responsive gas sensor of vertically aligned fluorine-doped tin oxide nanorod thin film

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this