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Authors: B. De Geyter, K. Komorowska, Z. Hens, D. Van Thourhout
Title: Hybrid Silicon Nitride and Colloidal Nanocrystal Waveguides and Microdisks: A Highly Versatile Test Bed for Visible to near-Infrared Active Integrated Photonics
Format: International Conference Presentation
Publication date: 11/2011
Journal/Conference/Book: MRS Fall Meeting 2011
Editor/Publisher: Materials Research Society, 
Location: Boston, United States
Citations: Look up on Google Scholar
Download: Download this Publication (232KB) (232KB)


Recent advances in colloidal nanocrystal synthesis have extended the material’s library greatly to more complex colloidal heterostructures. These new heterostructures are engineered to solve intrinsic problems of colloidal quantum materials, such as ultrafast multiexciton Auger recombination and overall material stability. These new properties, together with their ease of production and processing, and the tunability of their optical properties, make them excellent candidates to render passive integrated photonic devices on silicon-on-insulator, silica and silicon nitride, active. In this work, we present an extensive study of hybrid silicon nitride colloidal nanocrystal device integration. We report on the process optimization for fabricating hybrid waveguides and microdisks and prove the versatility by applying visibly-emitting ‘giant’ dot-in-dot CdSe/CdS/ZnS, CdSe/CdS dot-in-rod and near-infrared emitting PbSe/CdSe and PbS/CdS dot-in-dot. We report on the optical and chemical stability of these materials throughout the processing and investigate the optical performance of the hybrid waveguides and resonators.

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