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Waveguide‐coupled colloidal quantum dot light emitting diodes and detectors on a silicon nitride platform

Lukas Elsinger (UGent) , Robin Petit (UGent) , Frederik Van Acker (UGent) , Natalia Klaudia Zawacka (UGent) , Ivo Tanghe (UGent) , Kristiaan Neyts (UGent) , Christophe Detavernier (UGent) , Pieter Geiregat (UGent) , Zeger Hens (UGent) and Dries Van Thourhout (UGent)
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Abstract
Colloidal quantum dots (QDs) are an attractive light source for visible photonics, in particular their widely tunable emission wavelength, inexpensive wet-chemical synthesis and straight-forward hybrid integration can make the difference. In this work, integrated light-emitting diodes are demonstrated based on CdSe/CdS QDs, with the emission directly coupled to a silicon nitride waveguide. The devices feature a record current density of up to 100 A cm(-2) and a maximum on-chip power density of almost 1.5 W cm(-2) in a single-mode waveguide. Operated as detectors, the photodiodes have a low dark current of 1.5 mu A cm(-2). It is anticipated, that the devices will find an application in chip-based absorption spectroscopy and bio-sensing, as they can be post-processed on foundry-fabricated waveguide platforms, at a low cost. In addition, this approach provides the missing low-loss waveguide layer, necessary for building an electrically pumped laser using colloidal QDs.
Keywords
Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Condensed Matter Physics, colloidal quantum dots, heterogeneous integration, silicon nitride photonics, ABSORPTION, DEVICES, GAIN

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MLA
Elsinger, Lukas, et al. “Waveguide‐coupled Colloidal Quantum Dot Light Emitting Diodes and Detectors on a Silicon Nitride Platform.” LASER & PHOTONICS REVIEWS, 2021, doi:10.1002/lpor.202000230.
APA
Elsinger, L., Petit, R., Van Acker, F., Zawacka, N. K., Tanghe, I., Neyts, K., … Van Thourhout, D. (2021). Waveguide‐coupled colloidal quantum dot light emitting diodes and detectors on a silicon nitride platform. LASER & PHOTONICS REVIEWS. https://doi.org/10.1002/lpor.202000230
Chicago author-date
Elsinger, Lukas, Robin Petit, Frederik Van Acker, Natalia Klaudia Zawacka, Ivo Tanghe, Kristiaan Neyts, Christophe Detavernier, Pieter Geiregat, Zeger Hens, and Dries Van Thourhout. 2021. “Waveguide‐coupled Colloidal Quantum Dot Light Emitting Diodes and Detectors on a Silicon Nitride Platform.” LASER & PHOTONICS REVIEWS. https://doi.org/10.1002/lpor.202000230.
Chicago author-date (all authors)
Elsinger, Lukas, Robin Petit, Frederik Van Acker, Natalia Klaudia Zawacka, Ivo Tanghe, Kristiaan Neyts, Christophe Detavernier, Pieter Geiregat, Zeger Hens, and Dries Van Thourhout. 2021. “Waveguide‐coupled Colloidal Quantum Dot Light Emitting Diodes and Detectors on a Silicon Nitride Platform.” LASER & PHOTONICS REVIEWS. doi:10.1002/lpor.202000230.
Vancouver
1.
Elsinger L, Petit R, Van Acker F, Zawacka NK, Tanghe I, Neyts K, et al. Waveguide‐coupled colloidal quantum dot light emitting diodes and detectors on a silicon nitride platform. LASER & PHOTONICS REVIEWS. 2021;
IEEE
[1]
L. Elsinger et al., “Waveguide‐coupled colloidal quantum dot light emitting diodes and detectors on a silicon nitride platform,” LASER & PHOTONICS REVIEWS, 2021.
@article{8709366,
  abstract     = {{Colloidal quantum dots (QDs) are an attractive light source for visible photonics, in particular their widely tunable emission wavelength, inexpensive wet-chemical synthesis and straight-forward hybrid integration can make the difference. In this work, integrated light-emitting diodes are demonstrated based on CdSe/CdS QDs, with the emission directly coupled to a silicon nitride waveguide. The devices feature a record current density of up to 100 A cm(-2) and a maximum on-chip power density of almost 1.5 W cm(-2) in a single-mode waveguide. Operated as detectors, the photodiodes have a low dark current of 1.5 mu A cm(-2). It is anticipated, that the devices will find an application in chip-based absorption spectroscopy and bio-sensing, as they can be post-processed on foundry-fabricated waveguide platforms, at a low cost. In addition, this approach provides the missing low-loss waveguide layer, necessary for building an electrically pumped laser using colloidal QDs.}},
  articleno    = {{2000230}},
  author       = {{Elsinger, Lukas and Petit, Robin and Van Acker, Frederik and Zawacka, Natalia Klaudia and Tanghe, Ivo and Neyts, Kristiaan and Detavernier, Christophe and Geiregat, Pieter and Hens, Zeger and Van Thourhout, Dries}},
  issn         = {{1863-8880}},
  journal      = {{LASER & PHOTONICS REVIEWS}},
  keywords     = {{Atomic and Molecular Physics,and Optics,Electronic,Optical and Magnetic Materials,Condensed Matter Physics,colloidal quantum dots,heterogeneous integration,silicon nitride photonics,ABSORPTION,DEVICES,GAIN}},
  language     = {{eng}},
  pages        = {{7}},
  title        = {{Waveguide‐coupled colloidal quantum dot light emitting diodes and detectors on a silicon nitride platform}},
  url          = {{http://dx.doi.org/10.1002/lpor.202000230}},
  year         = {{2021}},
}

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