Fully printed high performance humidity sensors based on two-dimensional materials

Pei He; John Brent; Hui Ding; Jinxin Yang; David Lewis; Paul O'Brien; Brian Derby

doi:10.1039/C7NR08115D

Fully printed high performance humidity sensors based on two-dimensional materials

Pei He, John Brent, Hui Ding, Jinxin Yang, David Lewis, Paul O'Brien, Brian Derby

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Abstract

Fully printed humidity sensors based on two-dimensional (2D) materials are described. Monolayer graphene oxide (GO) and few-layered black phosphorus (BP) flakes were dispersed in low boiling point solvents suitable for inkjet printing. The humidity sensors were fabricated by printing GO and BP sensing layers on printed silver nanoparticle electrodes. The electrical response of the GO and BP sensors to humidity levels ranges from 11 to 97% relative humidity, which revealed a high capacitance sensitivity of 4.45 × 10 ⁴ times for the GO sensor and 5.08 × 10 ³ times for the BP sensor at 10 Hz operation frequency. Response/recovery times of the GO and BP sensor were found to be 2.7/4.6 s and 4.7/3.0 s respectively. These sensors also showed sensitive and fast response to a proximal human fingertip, showing potential applications in contactless switching.

Original language	English
Pages (from-to)	5599-5606
Number of pages	8
Journal	Nanoscale
Volume	10
Issue number	12
Early online date	15 Feb 2018
DOIs	https://doi.org/10.1039/C7NR08115D
Publication status	Published - 15 Feb 2018

Research Beacons, Institutes and Platforms

National Graphene Institute
Manchester Institute for Collaborative Research on Ageing

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10.1039/C7NR08115D

Nanoscale AcceptedAccepted author manuscript, 7.47 MB

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@article{647287c8ed95471397495a2a2df5ec09,

title = "Fully printed high performance humidity sensors based on two-dimensional materials",

abstract = "Fully printed humidity sensors based on two-dimensional (2D) materials are described. Monolayer graphene oxide (GO) and few-layered black phosphorus (BP) flakes were dispersed in low boiling point solvents suitable for inkjet printing. The humidity sensors were fabricated by printing GO and BP sensing layers on printed silver nanoparticle electrodes. The electrical response of the GO and BP sensors to humidity levels ranges from 11 to 97% relative humidity, which revealed a high capacitance sensitivity of 4.45 × 10 4 times for the GO sensor and 5.08 × 10 3 times for the BP sensor at 10 Hz operation frequency. Response/recovery times of the GO and BP sensor were found to be 2.7/4.6 s and 4.7/3.0 s respectively. These sensors also showed sensitive and fast response to a proximal human fingertip, showing potential applications in contactless switching. ",

author = "Pei He and John Brent and Hui Ding and Jinxin Yang and David Lewis and Paul O'Brien and Brian Derby",

note = "Funding Information: The inkjet printing equipment used in this study was supported through the EPSRC grant “Challenges in High Resolution Inkjet Printing” EP/L012022/1. PH would like to acknowledge the China Scholarship Council and the University of Manchester for financial support. POB and JB thank the Parker family for funding. Publisher Copyright: {\textcopyright} 2018 The Royal Society of Chemistry. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.",

year = "2018",

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doi = "10.1039/C7NR08115D",

language = "English",

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AU - He, Pei

AU - Brent, John

AU - Ding, Hui

AU - Yang, Jinxin

AU - Lewis, David

AU - O'Brien, Paul

AU - Derby, Brian

N1 - Funding Information: The inkjet printing equipment used in this study was supported through the EPSRC grant “Challenges in High Resolution Inkjet Printing” EP/L012022/1. PH would like to acknowledge the China Scholarship Council and the University of Manchester for financial support. POB and JB thank the Parker family for funding. Publisher Copyright: © 2018 The Royal Society of Chemistry. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.

PY - 2018/2/15

Y1 - 2018/2/15

N2 - Fully printed humidity sensors based on two-dimensional (2D) materials are described. Monolayer graphene oxide (GO) and few-layered black phosphorus (BP) flakes were dispersed in low boiling point solvents suitable for inkjet printing. The humidity sensors were fabricated by printing GO and BP sensing layers on printed silver nanoparticle electrodes. The electrical response of the GO and BP sensors to humidity levels ranges from 11 to 97% relative humidity, which revealed a high capacitance sensitivity of 4.45 × 10 4 times for the GO sensor and 5.08 × 10 3 times for the BP sensor at 10 Hz operation frequency. Response/recovery times of the GO and BP sensor were found to be 2.7/4.6 s and 4.7/3.0 s respectively. These sensors also showed sensitive and fast response to a proximal human fingertip, showing potential applications in contactless switching.

AB - Fully printed humidity sensors based on two-dimensional (2D) materials are described. Monolayer graphene oxide (GO) and few-layered black phosphorus (BP) flakes were dispersed in low boiling point solvents suitable for inkjet printing. The humidity sensors were fabricated by printing GO and BP sensing layers on printed silver nanoparticle electrodes. The electrical response of the GO and BP sensors to humidity levels ranges from 11 to 97% relative humidity, which revealed a high capacitance sensitivity of 4.45 × 10 4 times for the GO sensor and 5.08 × 10 3 times for the BP sensor at 10 Hz operation frequency. Response/recovery times of the GO and BP sensor were found to be 2.7/4.6 s and 4.7/3.0 s respectively. These sensors also showed sensitive and fast response to a proximal human fingertip, showing potential applications in contactless switching.

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JO - Nanoscale

JF - Nanoscale

IS - 12

ER -

Fully printed high performance humidity sensors based on two-dimensional materials

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