Electro-colorimetric hydrogen gas sensor based on Pt-functionalized In2O3 nanopushpins and InGaN/GaN multiple quantum wells
Journal
Optics Express
Journal Volume
20
Journal Issue
15
Pages
17136-17144
Date Issued
2012
Author(s)
Abstract
A novel electro-colorimetric gas sensing technique based on the catalytic metal nanoparticles decorated metal oxide nanostructures integrated with multiple quantum wells (MQWs) has been proposed. The working principle has been demonstrated by the sensing device derived from the composite consisting of In0.15Ga0.85N/GaN MQWs and Pt-functionalized In2O3 nanopushpins for the detection of hydrogen gas. The pronounced changes in emission as well as Raman scattering spectra of InGaN/GaN MQWs under different target gas concentrations clearly illustrate the feasibility of our newly designed composites for the derivative of contact-free, simple and highly sensitive gas sensors with optical detection
SDGs
Type
journal article