22 February 2018 Broadband infrared light emitting waveguides based on UV curable PbS quantum dot composites
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Proceedings Volume 10538, Optical Interconnects XVIII; 105380L (2018) https://doi.org/10.1117/12.2287464
Event: SPIE OPTO, 2018, San Francisco, California, United States
We present herein the active PbS-photopolymer waveguide fabricated by vacuum assisted microfluidic (VAM) soft lithography technique. The PbS Quantum Dots (QDs) were synthesized using colloidal chemistry methods with tunable sizes and emission wavelengths, resulting in efficient light emission around 1000 nm center wavelength. The PbS QDs have demonstrated much better solubility in our newly synthesized UV curable polymer than SU-8 photoresist, verified by Photoluminescence (PL) testing. Through refractive index control, the PbS QDs-polymer core material and polymer cladding material can efficiently confine the infrared emitting light with a broad spectral bandwidth of ~180 nm. Both single-mode and multi-mode light emitting waveguides have been realized.
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Kai Shen, Kai Shen, Sarfaraz Baig, Sarfaraz Baig, Guomin Jiang, Guomin Jiang, Young-hun Paik, Young-hun Paik, Sung Jin Kim, Sung Jin Kim, Michael R. Wang, Michael R. Wang, } "Broadband infrared light emitting waveguides based on UV curable PbS quantum dot composites", Proc. SPIE 10538, Optical Interconnects XVIII, 105380L (22 February 2018); doi: 10.1117/12.2287464; https://doi.org/10.1117/12.2287464

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