<p>The present invention relates to a gas sensing device comprising a nanoparticle layer (1) and a quantum dot layer (3) separated from each other by a gas absorption layer (2) which has a thickness which changes upon absorption of a gas. The nanoparticle layer (1) is provided for generating a surface plasmon resonance within a plasmon resonance frequency range upon illumination with light within a light frequency range; the quantum dot layer (3) has an absorption spectrum overlapping with said plasmon resonance frequency range of said nanoparticle layer (1) and shows photoluminescense in a photoluminescence emission frequency range upon absorption of energy within its absorption spectrum. The present invention further relates to a method for fabricating such a gas sensing device and to a method of using such a gas sensing device.</p>
