Photosensitive free-standing ultra-thin carbyne-gold films

TL;DR

This study investigates the photostimulation effect on the tunneling conductivity of free-standing ultra-thin carbyne-gold films, revealing a significant increase in conductivity near gold nanoparticle plasmon resonance frequencies.

Contribution

It introduces a novel method of using carbyne threads to stabilize free-standing thin C-Au films and demonstrates their photostimulated conductivity response.

Findings

Conductivity sharply increases under electromagnetic excitation near plasmon resonance.

Green laser radiation intensity significantly affects tunneling current.

Stable free-standing thin C-Au films successfully fabricated.

Abstract

In the article we introduce the experiment of the photostimulation effect in the tunneling conductivity of free-standing thin C-Au films. We observe a sharp increase of the conductivity of hybrid film due to the electromagnetic exciting at the frequencies which are close to the plasmon resonance of gold nanoparticles. The use of carbyne threads as a stabilizing matrix makes it possible to obtain free-standing thin films that demonstrate a good structural stability. The tunnel current-voltage measurements demonstrate a strong dependence of the current value on the intensity of green laser radiation used to photostimulate thin C-Au in area of the measuring experiment.