Enhanced hydrogen gas response of Pd nanoparticles-decorated single walled carbon nanotube film/SiO2/Si heterostructure | Zendy

Yonggang Du | Zendy; Qingzhong Xue | Zendy; Zhongyang Zhang | Zendy; Fujun Xia | Zendy; Zilong Liu | Zendy; Wei Xing | Zendy

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Enhanced hydrogen gas response of Pd nanoparticles-decorated single walled carbon nanotube film/SiO2/Si heterostructure

Author(s) -

Yonggang Du,

Qingzhong Xue,

Zhongyang Zhang,

Fujun Xia,

Zilong Liu,

Wei Xing

Publication year - 2015

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4913953

Subject(s) - carbon nanotube , materials science , heterojunction , thermionic emission , hydrogen , nanotechnology , nanotube , hydrogen sensor , chemical engineering , carbon nanotube quantum dot , palladium , optoelectronics , catalysis , chemistry , organic chemistry , physics , quantum mechanics , engineering , electron

A new type carbon nanotube-based gas sensor: palladium nanoparticles decorated single walled carbon nanotube film/SiO2/Si (Pd-SWCNT film/SiO2/Si) heterostructures were fabricated by a simple and practical filtration method. When used for hydrogen (H2) sensing, the Pd-SWCNT film/SiO2/p-Si heterostructure shows very high H2 response, which is tens of times higher than that of Pd-SWCNT film resistance-type H2 sensor in this paper and is superior to those of carbon nanotube-based resistance-type H2 sensors reported previously. The mechanism of the enhanced H2 response can be explained by thermionic emission theory and interfacial effect

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