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Bridge Type Hydrogen Sensor Using Platinum Ultrathin film

Authors:
Yuki Ushita
Shuzo Takeichi
Ryosuke Sugai
Shota Inami
Kenji Sakai
Toshihiko Kiwa
Keiji Tsukada

Keywords: platinum, hydrogen sensor, bridge circuit, thin-film

Abstract:
The resistance of platinum thin-film was reduced by carrier density increment in the presence of hydrogen gas. The resistance change depended on the thickness of the platinum. Using these phenomena, a bridge-type hydrogen sensor, which converted this resistance change into a voltage change, was developed. The developed sensor was able to detect hydrogen at room temperature. Furthermore, we suggest a method in which the response and recovery time is accelerated by applying a pulse voltage to the sensor. The developed sensor can use DC and AC voltage as the driving power source.

Pages: 11 to 14

Copyright: Copyright (c) IARIA, 2014

Publication date: November 16, 2014

Published in: conference

ISSN: 2308-3514

ISBN: 978-1-61208-375-9

Location: Lisbon, Portugal

Dates: from November 16, 2014 to November 20, 2014