Transfer of CVD-grown graphene for room temperature gas sensors

Autor: Mei Lyu, Rishi Maiti, Andrea Ponzoni, M. Donarelli, Jennifer MacLeod, Federica Rigoni, Giorgio Sberveglieri, Guido Faglia, Bharati Gupta, Nunzio Motta, Camilla Baratto
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Materials science
Hydrogen
chemistry.chemical_element
Bioengineering
grapheme
graphene transfer
02 engineering and technology
010402 general chemistry
01 natural sciences
law.invention
Settore FIS/03 - Fisica della Materia
Ammonia
chemistry.chemical_compound
room temperature gas sensor
graphene gas sensor
law
General Materials Science
Relative humidity
Nitrogen dioxide
Electrical and Electronic Engineering
Settore CHIM/02 - Chimica Fisica
humidity effect
Chemiresistor
business.industry
Graphene
Mechanical Engineering
Chemistry (all)
graphene
Humidity
General Chemistry
021001 nanoscience & nanotechnology
Settore FIS/07 - Fisica Applicata(Beni Culturali
Ambientali
Biol.e Medicin)
0104 chemical sciences
ammonia gas sensor
UV effect
Materials Science (all)
Mechanics of Materials
chemistry
Electrode
Optoelectronics
0210 nano-technology
business
Zdroj: Nanotechnology (Bristol. Print) 28 (2017). doi:10.1088/1361-6528/aa8611
info:cnr-pdr/source/autori:Rigoni, F.; Maiti, R.; Baratto, C.; Donarelli, M.; MacLeod, J.; Gupta, B.; Lyu, M.; Ponzoni, A.; Sberveglieri, G.; Motta, N.; Faglia, G./titolo:Transfer of CVD-grown graphene for room temperature gas sensors/doi:10.1088%2F1361-6528%2Faa8611/rivista:Nanotechnology (Bristol. Print)/anno:2017/pagina_da:/pagina_a:/intervallo_pagine:/volume:28
Popis: An easy transfer procedure to obtain graphene-based gas sensing devices operating at room temperature (RT) is presented. Starting from chemical vapor deposition-grown graphene on copper foil, we obtained single layer graphene which could be transferred onto arbitrary substrates. In particular, we placed single layer graphene on top of a SiO2/Si substrate with pre-patterned Pt electrodes to realize a chemiresistor gas sensor able to operate at RT. The responses to ammonia (10, 20, 30 ppm) and nitrogen dioxide (1, 2, 3 ppm) are shown at different values of relative humidity, in dark and under 254 nm UV light. In order to check the sensor selectivity, gas response has also been tested towards hydrogen, ethanol, acetone and carbon oxide. Finally, a model based on linear dispersion relation characteristic of graphene, which take into account humidity and UV light effects, has been proposed.
Databáze: OpenAIRE
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