TY - JOUR
T1 - Study of a WO3 thin film based hydrogen gas sensor decorated with platinum nanoparticles
AU - Chang, Ching Hong
AU - Chou, Tzu Chieh
AU - Chen, Wei Cheng
AU - Niu, Jing Shiuan
AU - Lin, Kun Wei
AU - Cheng, Shiou Ying
AU - Tsai, Jung Hui
AU - Liu, Wen Chau
N1 - Funding Information:
Part of this work was supported by the Contract MOST 108-221-E-006-045 in TAIWAN. Technical assistance by Miss Hui-Jung Shih (SEM, Hitachi SU8000, Instrument Center, National Cheng Kung University) is also appreciated.
Funding Information:
Part of this work was supported by the Contract MOST 108-221-E-006-045 in TAIWAN. Technical assistance by Miss Hui-Jung Shih (SEM, Hitachi SU8000, Instrument Center, National Cheng Kung University) is also appreciated.
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/8/15
Y1 - 2020/8/15
N2 - A simple platinum nanoparticle (Pt NP)/WO3 semiconducting metal oxide (SMO)-based structure is fabricated and completely studied as a hydrogen gas sensor. In this work, simple rapid thermal evaporation (RTE) was employed to fabricate Pt NPs. This approach could easily produce Pt NPs with a small grain size and uniformity on the WO3 thin film. Experimentally, at 200 °C, the studied device exhibited an excellent hydrogen sensing response of 1.41 × 106 (under a 1% H2/air gas), a very low detecting level of 1 ppm H2/air, and a relatively shorter response (recovery) time of 201 s (26) s. Moreover, first order differential (FOD) and shape-preserving piecewise cubic interpolation (SPPCI) were also employed to overcome the wireless transmission problem for the Internet of Things (IoTs). Furthermore, based on the thermodynamic analysis, the surface coverage performance was studied for this device. As the result, the studied device exhibited practically adsorption with hydrogen gas at 200 °C. The studied device is therefore promising for high-performance hydrogen sensing applications.
AB - A simple platinum nanoparticle (Pt NP)/WO3 semiconducting metal oxide (SMO)-based structure is fabricated and completely studied as a hydrogen gas sensor. In this work, simple rapid thermal evaporation (RTE) was employed to fabricate Pt NPs. This approach could easily produce Pt NPs with a small grain size and uniformity on the WO3 thin film. Experimentally, at 200 °C, the studied device exhibited an excellent hydrogen sensing response of 1.41 × 106 (under a 1% H2/air gas), a very low detecting level of 1 ppm H2/air, and a relatively shorter response (recovery) time of 201 s (26) s. Moreover, first order differential (FOD) and shape-preserving piecewise cubic interpolation (SPPCI) were also employed to overcome the wireless transmission problem for the Internet of Things (IoTs). Furthermore, based on the thermodynamic analysis, the surface coverage performance was studied for this device. As the result, the studied device exhibited practically adsorption with hydrogen gas at 200 °C. The studied device is therefore promising for high-performance hydrogen sensing applications.
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U2 - 10.1016/j.snb.2020.128145
DO - 10.1016/j.snb.2020.128145
M3 - Article
AN - SCOPUS:85084707367
VL - 317
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
SN - 0925-4005
M1 - 128145
ER -