Spectral emission dependence of tin-vacancy centers in diamond from thermal processing and chemical functionalization

TL;DR

This study systematically investigates how thermal processing and chemical functionalization affect the spectral emission properties of tin-vacancy centers in diamond, revealing controllable spectral line variations and detailed emission characteristics.

Contribution

It provides new insights into the spectral emission dependence of SnV centers on surface treatments and characterizes their emission lifetimes and saturation behaviors.

Findings

Identification of three spectral lines at 620 nm, 631 nm, and 647 nm linked to SnV centers.

Surface oxidation modifies the relative occurrence of spectral features.

Detailed emission properties including lifetime and saturation parameters are reported.

Abstract

We report a systematic photoluminescence (PL) investigation of the spectral emission properties of individual optical defects fabricated in diamond upon ion implantation and annealing. Three spectral lines at 620 nm, 631 nm, and 647 nm are identified and attributed to the SnV center due to their occurrence in the PL spectra of the very same single-photon emitting defects. We show that the relative occurrence of the three spectral features can be modified by oxidizing the sample surface following thermal annealing. We finally report the relevant emission properties of each class of individual emitters, including the excited state emission lifetime and the emission intensity saturation parameters.