Controlling carbon nanotube photoluminescence using silicon microring resonators

TL;DR

This paper demonstrates the coupling of semiconducting carbon nanotube photoluminescence with silicon microring resonators, achieving high-quality factors and enabling potential development of efficient nanotube-based light sources on silicon.

Contribution

It introduces a novel integration of carbon nanotubes with silicon microring resonators, achieving high-quality factors and sharp emission peaks for potential optoelectronic applications.

Findings

Achieved quality factors up to 4000 in emission.

Observed sharp emission peaks due to cavity mode interaction.

Demonstrated potential for nanotube-based light sources on silicon.

Abstract

We report on coupling between semiconducting single-wall carbon nanotubes (s-SWNT) photoluminescence and silicon microring resonators. Polyfluorene extracted s-SWNT deposited on such resonators exhibit sharp emission peaks, due to interaction with the cavity modes of the microring resonators. Ring resonators with radius of 5 {\mu}m and 10 {\mu}m were used, reaching quality factors up to 4000 in emission. These are among the highest values reported for carbon nanotubes coupled with an integrated cavity on silicon platform, which open up the possibility to build s-SWNT based efficient light source on silicon.