High-Q Emission from Colloidal Quantum Dots Embedded in Polymer Quasi-BIC Metasurfaces

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 18, 2025

Metasurfaces supporting narrowband resonances are of significant interest in photonics for molecular sensing, quantum light source engineering, and nonlinear photonics. However, many device architectures rely on large refractive index dielectric materials lengthy fabrication processes. In this work, we demonstrate quasi-bound states the continuum (quasi-BICs) using a polymer metasurface exhibiting experimental quality factors 305 at visible wavelengths. Our process only consists electron-beam lithography resist development, making it compatible with large-scale techniques. Additionally, address challenges integrating colloidal dots (CQDs) into nanopillars, such as depletion-induced aggregation excess nanoparticle removal, by leveraging our previously reported functionalization method modified development procedures. We both polarized emission from CQD-integrated quasi-BIC metasurfaces. proposed platform is broadly applicable across various emitters methods could enable advancements scalable manufacturing resonant optical devices.

Language: Английский

Quantum dots-doped microlenses made by photolithography

Optical Materials, Journal Year: 2025, Volume and Issue: unknown, P. 117028 - 117028

Published: April 1, 2025

Language: Английский