Publication date: 15th May 2025
Integrated photonics is advancing rapidly, yet current platforms based on solid-state materials and polymers lack the flexibility, cost-effectiveness, and broad optical functionality required for scalable applications. We introduce a new approach using pure colloidal nanoparticle films, enabling solution-based fabrication of photonic components with tunable optical properties. This platform allows direct patterning and integration of diverse nanomaterials on a single chip. We demonstrate ZrO₂ and InP single-mode waveguides with optical attenuations of 3 dB/mm and 1.5 dB/mm at 700 nm, respectively, along with a resonator exhibiting a Q-factor of 3600. Incorporating Rhodamine B dye into the waveguides enables lasing, transforming passive waveguide into active devices. This work paves the way for low-cost, multifunctional integrated photonic systems.
Haoqi Wu§, Hanyu Hong§, Yi-Chun Liu§, Zirui Zhou, Tanya Chen, Aritrajit Gupta, Yadong Zhang, Seth Marder, Jiwoong Park, Dmitri Talapin*
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