Laser terahertz emission system to investigate hydrogen gas sensors

Toshihiko Kiwa; Keiji Tsukada; Masato Suzuki; Masayoshi Tonouchi; Sonoko Migitaka; Koichi Yokosawa

doi:10.1063/1.1954885

Laser terahertz emission system to investigate hydrogen gas sensors

Toshihiko Kiwa, Keiji Tsukada, Masato Suzuki, Masayoshi Tonouchi, Sonoko Migitaka, Koichi Yokosawa

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

31 Citations (Scopus)

Abstract

A laser terahertz emission system is proposed to investigate the catalytic metal/semiconductor interfaces of hydrogen sensors. Samples were fabricated by depositing a catalytic metal thin film on a semi-insulating silicon substrate. A femtosecond laser was used to radiate terahertz waves from the sample in a gas cell filled with a hydrogen and nitrogen gas mixture. The peak amplitude of the terahertz waves decreased with increasing hydrogen concentration. We also fabricated a metal-oxide-semiconductor field effect transistor hydrogen sensor, and compared its properties with the terahertz radiation properties. These results suggest that the laser terahertz emission system is a potential tool to investigate catalytic metal/semiconductor interfaces.

Original language	English
Article number	261102
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics Letters
Volume	86
Issue number	26
DOIs	https://doi.org/10.1063/1.1954885
Publication status	Published - Jun 27 2005

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.1954885

Cite this

@article{74a95e1f8a3147048c21bec7f4c878a4,

title = "Laser terahertz emission system to investigate hydrogen gas sensors",

abstract = "A laser terahertz emission system is proposed to investigate the catalytic metal/semiconductor interfaces of hydrogen sensors. Samples were fabricated by depositing a catalytic metal thin film on a semi-insulating silicon substrate. A femtosecond laser was used to radiate terahertz waves from the sample in a gas cell filled with a hydrogen and nitrogen gas mixture. The peak amplitude of the terahertz waves decreased with increasing hydrogen concentration. We also fabricated a metal-oxide-semiconductor field effect transistor hydrogen sensor, and compared its properties with the terahertz radiation properties. These results suggest that the laser terahertz emission system is a potential tool to investigate catalytic metal/semiconductor interfaces.",

author = "Toshihiko Kiwa and Keiji Tsukada and Masato Suzuki and Masayoshi Tonouchi and Sonoko Migitaka and Koichi Yokosawa",

note = "Funding Information: The authors would like to thank Dr. R. Inoue, Osaka University, for fruitful discussions. The authors also thank Y. Yamazaki and T. Yamaguchi, Okayama University for the sample cell fabrication. This work was supported by the New Energy and Industrial Technology Development Organization. ",

year = "2005",

month = jun,

day = "27",

doi = "10.1063/1.1954885",

language = "English",

volume = "86",

pages = "1--3",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "26",

}

TY - JOUR

T1 - Laser terahertz emission system to investigate hydrogen gas sensors

AU - Kiwa, Toshihiko

AU - Tsukada, Keiji

AU - Suzuki, Masato

AU - Tonouchi, Masayoshi

AU - Migitaka, Sonoko

AU - Yokosawa, Koichi

N1 - Funding Information: The authors would like to thank Dr. R. Inoue, Osaka University, for fruitful discussions. The authors also thank Y. Yamazaki and T. Yamaguchi, Okayama University for the sample cell fabrication. This work was supported by the New Energy and Industrial Technology Development Organization.

PY - 2005/6/27

Y1 - 2005/6/27

N2 - A laser terahertz emission system is proposed to investigate the catalytic metal/semiconductor interfaces of hydrogen sensors. Samples were fabricated by depositing a catalytic metal thin film on a semi-insulating silicon substrate. A femtosecond laser was used to radiate terahertz waves from the sample in a gas cell filled with a hydrogen and nitrogen gas mixture. The peak amplitude of the terahertz waves decreased with increasing hydrogen concentration. We also fabricated a metal-oxide-semiconductor field effect transistor hydrogen sensor, and compared its properties with the terahertz radiation properties. These results suggest that the laser terahertz emission system is a potential tool to investigate catalytic metal/semiconductor interfaces.

AB - A laser terahertz emission system is proposed to investigate the catalytic metal/semiconductor interfaces of hydrogen sensors. Samples were fabricated by depositing a catalytic metal thin film on a semi-insulating silicon substrate. A femtosecond laser was used to radiate terahertz waves from the sample in a gas cell filled with a hydrogen and nitrogen gas mixture. The peak amplitude of the terahertz waves decreased with increasing hydrogen concentration. We also fabricated a metal-oxide-semiconductor field effect transistor hydrogen sensor, and compared its properties with the terahertz radiation properties. These results suggest that the laser terahertz emission system is a potential tool to investigate catalytic metal/semiconductor interfaces.

UR - http://www.scopus.com/inward/record.url?scp=22144435572&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=22144435572&partnerID=8YFLogxK

U2 - 10.1063/1.1954885

DO - 10.1063/1.1954885

M3 - Article

AN - SCOPUS:22144435572

SN - 0003-6951

VL - 86

SP - 1

EP - 3

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 26

M1 - 261102

ER -

Laser terahertz emission system to investigate hydrogen gas sensors

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this