Plasmonic photoconductance in free-standing monolayered gold nanoparticle membranes

E. Terver (1) , Melanie Gauvin (1) , Thomas Alnasser (1) , Inès Abid (2) , Adnen Mlayah (2) , S. Xie (3) , J. Brugger (3) , B. Viallet (1) , Laurence Ressier (1) , Jérémie Grisolia (1)

1 LPCNO - Laboratoire de physique et chimie des nano-objets
2 CEMES-NeO - Nano-Optique et Nanomatériaux pour l'optique
3 EPFL - Ecole Polytechnique Fédérale de Lausanne

We report on photo-current generation in freestanding monolayered gold nanoparticle membranes excited by using a laser. The absence of a substrate leads to a 50% increase of the photocurrent at plasmon resonance. This current is attributed to a combination of trap state dynamics and bolometric effects in a nanocomposite medium yielding a temperature rise of 40K.

Mots clés: Nanotechnology; Plasmon resonances; Photoconductance; Gold Nanoparticles; Current generation; Gold; Metal nanoparticles; Nanoparticles; Temperature rise; Trap state; Plasmons

Domaines: Physique [physics]

E. Terver, Melanie Gauvin, Thomas Alnasser, Inès Abid, Adnen Mlayah, et al.. Plasmonic photoconductance in free-standing monolayered gold nanoparticle membranes. Nanotechnology Materials and Devices Conference (NMDC), 2016 IEEE, 2016, Toulouse, France. ⟨10.1109/NMDC.2016.7777131⟩. ⟨hal-01764990⟩