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Arrays of Functionalized Graphene Chemiresistors for Selective Sensing of Volatile Organic Compounds

Journal Article · · ACS Applied Electronic Materials

Real-time detection of volatile organic compounds (VOCs) is being spotlighted for its importance in environmental monitoring and disease detection from the breath. However, the selective detection of VOCs in a small form factor gas sensor remains a challenge. Here, we present the VOC sensing performance of phthalocyanine (Pc)-functionalized graphene chemiresistors supported by the theoretical prediction of Pc's VOC interactions. Pc functionalization, with and without metalation, was studied parametrically with varying deposition parameters to explore impacts on the gas sensing response toward VOCs as a function of substrate coverage. Sensing data were collected to establish fingerprint signatures for a variety of VOCs. In conclusion, improvement in selectivity is shown by successfully differentiating the VOCs from each other when combined into a gas sensor array tested with acetone, ethanol, formaldehyde, and toluene.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
Natural Sciences and Engineering Research Council of Canada (NSERC)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
2007746
Journal Information:
ACS Applied Electronic Materials, Journal Name: ACS Applied Electronic Materials Journal Issue: 3 Vol. 5; ISSN 2637-6113
Publisher:
ACS PublicationsCopyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (4)


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