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Room-Temperature H? Gas Sensing Characterization of Graphene-Doped Porous Silicon via a Facile Solution Dropping Method.

ABSTRACT: In this study, a graphene-doped porous silicon (G-doped/p-Si) substrate for low ppm H? gas detection by an inexpensive synthesis route was proposed as a potential noble graphene-based gas sensor material, and to understand the sensing mechanism. The G-doped/p-Si gas sensor was synthesized by a simple capillary force-assisted solution dropping method on p-Si substrates, whose porosity was generated through an electrochemical etching process. G-doped/p-Si was fabricated with various graphene concentrations and exploited as a H? sensor that was operated at room temperature. The sensing mechanism of the sensor with/without graphene decoration on p-Si was proposed to elucidate the synergetic gas sensing effect that is generated from the interface between the graphene and p-type silicon.

SUBMITTER: Eom NSA

PROVIDER: S-EPMC5751383 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature

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Room-Temperature H₂ Gas Sensing Characterization of Graphene-Doped Porous Silicon via a Facile Solution Dropping Method.

Eom Nu Si A NSA Cho Hong-Baek HB Song Yoseb Y Lee Woojin W Sekino Tohru T Choa Yong-Ho YH

Sensors (Basel, Switzerland) 20171128 12

In this study, a graphene-doped porous silicon (G-doped/p-Si) substrate for low ppm H₂ gas detection by an inexpensive synthesis route was proposed as a potential noble graphene-based gas sensor material, and to understand the sensing mechanism. The G-doped/p-Si gas sensor was synthesized by a simple capillary force-assisted solution dropping method on p-Si substrates, whose porosity was generated through an electrochemical etching process. G-doped/p-Si was fabricated with various graphene conce ...[more]

PMID: 29182573

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