Toward Highly Sensitive and Energy Efficient Ammonia Gas Detection with Modified Single-Walled Carbon Nanotubes at Room Temperature

• DOI: 10.1021/acssensors.7b00358
• Publication Date: 2017-11-30T08:11:42Z
• Authors: Luis Antonio Pane...; Mehrdad Shaygan; Yangxi Fu; Ye Liu; Vyacheslav Khavrus; Steffen Oswald; Thomas Gemming; Larysa Baraban; Viktor Bezugly; Gianaurelio Cunib...
• Keywords: Characterization

Fabrication and comparative analysis of the gas sensing devices based on individualized single-walled carbon nanotubes four different types (pristine, boron doped, nitrogen semiconducting ones) for detection low concentrations ammonia is presented. The comparison performance devices, in terms resistance change under exposure to at combined with detailed chemical bonding dopant atoms nanotube walls sheds light interaction NH3 nanotubes. Furthermore, chemoresistive measurements showed that use as conducting channels leads highest sensitivity compared other materials. Electrical characterization structure fabricated a close relation between amount quality distribution deposited their properties. All were performed room temperature, power consumption was 0.6 μW. Finally, route toward an optimal fabrication nanotube-based sensors reliable, energy-efficient sub-ppm proposed, which matches pave advent future applications.