Jump to main content
Jump to site search


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 of GO and BP sensing layers on printed silver nanoparticle electrodes. The electrical response of the GO and BP sensors to humidity levels ranging from 11 to 97% RH, which revealed high capacitance sensitivity of 4.45 × 104 times for the GO sensor and 5.08 × 103 times for the BP sensor at 10 Hz operation frequency. Response/recovery times of the GO and BP sensor were measured 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, giving potential applications in contactless switching.

Back to tab navigation

Supplementary files

Publication details

The article was received on 31 Oct 2017, accepted on 15 Feb 2018 and first published on 15 Feb 2018


Article type: Paper
DOI: 10.1039/C7NR08115D
Citation: Nanoscale, 2018, Accepted Manuscript
  •   Request permissions

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

    P. He, J. R. Brent, H. Ding, J. Yang, D. J. Lewis, P. O'Brien and B. Derby, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C7NR08115D

Search articles by author

Spotlight

Advertisements