Research Topics

intern

Integration of colloidal quantum dots with PICs

Research Area: Heterogeneous integration technology for silicon photonics , Integrated lasers and LEDs

Main Researcher: Dries Van Thourhout

Other people involved:

PhD thesises

Pieter Geiregat, Colloïdale 'Quantum Dots' voor geïntegreerde fotonica: van optische winst tot ultrasnelle modulatie, Colloidal Quantum Dots for Integrated Photonics: From Optical Gain to Ultrafast Modulation, (2/2015)
Weiqiang Xie, Ontwikkeling van passieve en actieve geintegreerde fotonische structuren in silicumnitride, Development of Passive and Active Integrated Silicon Nitride Photonics, (10/2016)
Bram De Geyter, Colloïdale Quantum Dots als lichtbron voor geïntegreerde fotonica in silicium , Colloidal Quantum Dots as Light Emitters for Silicon Photonics , (11/2012)
Suzanne Bisschop, Colloidale kwantumstippen voor geintegreerde lichtbronnen, Colloidal quantum dots for integrated light sources, (5/2018)
Yunpeng Zhu, Colloïdale 'quantum dots' als actief materiaal voor geintegreerde fotonische circuits in siliciumnitride, Colloidal Quantum Dots as the Active Material for Silicon Nitride Photonics, (6/2018)
Lukas Elsinger, Geintegreerde fotonica met colloidale kwantumdots: opto-elektronische componenten en kwantumfotonische toepassingen, Integrated Photonics with Colloidal Semiconductor Nanocrystals: Optoelectronic Devices and Quantum Applications, (9/2020)
Ivo Tanghe, Voorbij de bandkloof: een extensie van het bereik van colloÃ¯dale nanokristallen in actieve fotonische apparaten, Beyond the Band Edge: Extending the Reach of Colloidal Nanocrystals in Active Photonic Devices, (6/2023)
Chao Pang, Waveguide-Coupled Photodetectors and Light Sources Based on Colloidal Quantum Dots: From Building Blocks to Advanced Demonstrators, (10/2024)
Publications
International Journals

Wai Kit Ng, T.V. Raziman, Dhruv Saxena, K. Molkens, I. Tanghe, Zhenghe Xuan, P. Geiregat, D. Van Thourhout, Mauricio Barahona, Riccardo Sapienza, Mode Visualization and Control of Complex Lasers Using Neural Networks, ACS Photonics, p. 1-17 doi:10.1021/acsphotonics.5c01710 (2025)  .
T.V. Raziman, A. Fischer, R. Nori, A. Chan, W. Kit Ng, D. Saxena, O. Hess, K. Molkens, I. Tanghe, P. Geiregat, D. Van Thourhout, M. Barahona, R. Sapienza, Single-Mode Emission by Phase-Delayed Coupling Between Nanolasers, ACS Photoniocs, 12(5), p.2337-2343 doi:10.1021/acsphotonics.4c01230 (2025)  .
Y .Deng, E. Kheradmand, C. Pang, A. Siddik, J. Bai, I. Lieberman, P. Geiregat, D. Van Thourhout, Z. Hens, Super bending-stability flexible colloidal QDs photodetector with fast response and near-unity carrier extraction efficiency, accepted for publication in ACS Applied Materials & Interfaces, (to be published).
I. Tanghe, T. Vandekerckhove, M. Samoli, A. Waters, D. Harankahage, M. Zamkov, C. Seassal, H-S. Nguyen, D. Van Thourhout, P. Geiregat, Unraveling the Nature of Lasing Emission from Hybrid SiliconNitride and Colloidal Nanocrystal Photonic Crystals with LowRefractive Index Contrast, ACS Photonics, 11(11), p.4906-4915 doi:10.1021/acsphotonics.4c01410 (2024)  .
C. Pang, Y. Deng, E. Kheradmand, L. Moreno Hagelsieb, Y. Guo, D. Cheyns, P. Geiregat, Z. Hens, D. Van Thourhout, A silicon photonics waveguide-coupled colloidal quantum dot photodiode sensitive beyond 1.6 ÃƒÆ’Ã¢â‚¬Å¡Ãƒâ€šÃ‚Âµm, Applied Physics Letters - Photonics, 9(6), p.paper 066113 (12 pages) doi:https://doi.org/10.1063/5.0206386 (2024)  .
I. Tanghe, K. Molkens, T. Vandekerckhove, Dobromil Respekta, Amelia Waters, Jiamin Huang, Jacob Beavon, Dulanjan Harankahage, Chao Yang Lin, Kai Chen, D. Van Thourhout, Mikhail Zamkov, P. Geiregat, Two-Dimensional Electron-Hole Plasma in Colloidal Quantum Shells Enables Integrated Lasing Continuously Tunable in the Red Spectrum, ACS Photonics, 18(22), p.14661-14671 doi:10.1021/acsnano.4c02907 (2024)  .
Y. Deng, C. Pang, E. Kheradmand, J. Leemans, J. Bai, M. Minjauw, J. Liu, K. Molkens, J. Beeckman, C. Detavernier, P. Geiregat, D. Van Thourhout, Z. Hens, Short-Wave Infrared Colloidal QD Photodetector with Nanosecond Response Times Enabled by Ultrathin Absorber Layers, Advanced Materials, p.article 2402002 (8 pages) doi:10.1002/adma.202402002 (2024)  .
C. Pang, Y. Deng, E. Kheradmand, N. Poonkottil, R. Petit, L. Elsinger, C. Detavernier, P. Geiregat, Z. Hens, D. Van Thourhout, Integrated PbS Colloidal Quantum Dot Photodiodes on Silicon Nitride Waveguides, ACS Photonics, p.10 pages doi:10.1021/acsphotonics.3c00945 (2023)  .
I. Tanghe, M. Samoli, I. Wagner, S. A. Cayan, A. H. Khan, K. Chen, J. Hodgkiss, I. Moreels, D. Van Thourhout, Z. Hens, P. Geiregat, Optical gain and lasing from bulk cadmium sulfide nanocrystals through bandgap renormalization, Nature Nanotechnology, doi:10.1038/s41565-023-01521-0 (2023)  .
I. Tanghe, J. Llusar, JI, Climente, A. Barker, G. Paterno, F. Scotognella, A. Polovitsyn, AH. Khan, Z. Hens, D. Van Thourhout, P. Geiregat, I. Moreels, Role of Thermally Occupied Hole States in Room-Temperature Broadband Gain in CdSe/CdS Giant-Shell Nanocrystals, Advanced Optical Materials, p.paper 2201378 (9 pages) doi:10.1002/adom.202201378 (2022).
I. Tanghe, J. Butkus, K. Chen, R. R. Tamming, S. Singh, Y. Ussembayev, K. Neyts, D. Van Thourhout, J. M. Hodgkiss, P. Geiregat, Broadband Optical Phase Modulation by Colloidal CdSe Quantum Wells, Nano Letters, 22(1), Belgium, p.58-64 doi:10.1021/acs.nanolett.1c03181 (2021)  .
P. Geiregat, C. Rodá, I. Tanghe, S. Singh, A. Di Giacomo, D. Lebrun, G. Grimaldi, J. Maes, D. Van Thourhout, I. Moreels, A. J. Houtepen, Z. Hens, "Localization-limited exciton oscillator strength in colloidal CdSe nanoplatelets revealed by the optically induced stark effect", Light-science & Applications , 10, p.paper 112 (11 pages) (2021)  .
L. Elsinger, R. Petit, F. Van Acker, N. K. Zawacka, I. Tanghe, K. Neyts, C. Detavernier, P. Geiregat, Z. Hens, D. Van Thourhout, Waveguide-Coupled Colloidal Quantum Dot Light Emitting Diodes and Detectors on a Silicon Nitride Platform, Lasers & Photonics Reviews, 15(7), Belgium, p.n/a - n/a doi:10.1002/lpor.202000230 (2021).
L. Elsinger, R. Petit, F. Van Acker, N. K. Zawacka, I. Tanghe, K. Neyts, C. Detavernier, P. Geiregat, Z. Hens, D. Van Thourhout, Waveguide-coupled colloidal quantum dot light emitting diodes and detectors on a silicon nitride platform, Laser & Photonics Reviews , 15(7), p.paper 2000230 (7 pages) (2021)  .
L. Elsinger, R. Gourgues, I. E. Zadeh, J. Maes, A. Guardiani, G. Bulgarini, S. F. Pereira, S. N. Dorenbos, V. Zwiller, Z. Hens, D. Van Thourhout, Integration of Colloidal PbS/CdS Quantum Dots with Plasmonic Antennas and Superconducting Detectors on a Silicon Nitride Photonic Platform, Nano Letters, 19(8), p.5452-5458 doi:10.1021/acs.nanolett.9b01948 (2019).
S. Bisschop, P. Geiregat, L. Elsinger, E. Drijvers, D. Van Thourhout, Z. Hens, E. Brainis, Fabrication and characterization of SiNx/Au cavities with colloidal nanocrystals, Optics Express, 26(5), p. 6046-6055 doi:10.1364/OE.26.006046 (2018)  .

International Conferences

I. Tanghe, T. Vandekerckhove, M. Samoli, A. Waters, D. Harankahage, M. Zamkov, Z. Hens, C. Seassal, H-S. Nguyen, D. Van Thourhout, P. Geiregat, Photonic Crystal Surface Emitting Lasers over the Entire Visible Spectrum based on Colloidal Nanocrystals, Conference on Lasers and Electro-Optics Europe, Germany, (2025)  .
D. Van Thourhout, C. Pang, K. Molkens, I. Tanghe, Yuhao Deng, P. Geiregat, Zeger Hens, Photonic ICs with Photodetectors and Light Sources Based on Colloidal Quantum Dotsâ€”From Building Blocks to Advanced Demonstrators, 2025 MRS Spring Meeting (invited), EL01.05.01, (2025).
M. Cherta Garrido, S. Clemmen, D. Van Thourhout, PhC cavities for the development of a GeV-based spin-photon interface, IEEE Photonics Benelux Annual Symposium 2024, Netherlands, (2024)  .
I. Tanghe, T. Vandekerckhove, M. Samoli, A. Waters, D. Harankahage, M. Zamkov, Z. Hens, C. Seassal, H-S. Nguyen, D. Van Thourhout, P. Geiregat, Unraveling the Nature of Lasing Emission from Hybrid Silicon Nitride and Colloidal Nanocrystal Low Refractive Index Photonic Crystals, Annual Symposium of the IEEE Photonics Society Benelux Chapter, (2024)  .
I. Tanghe, M. Samoli, S. A. Cayan, D. Van Thourhout, Z. Hens, P. Geiregat, Photonic Crystal Surface emitting Lasers across the Visible Spectrum based on colloidal Quantum Dots, International Semiconductor Laser Conference, United States, doi:10.1109/ISLC57752.2024.10717361 (2024)  .
C. Pang, R. March, E. Kheradmand, Y. Deng, L. Hagelsieb, L. Elsinger, D. Cheyns, P. Geiregat, Z. Hens, D. Van Thourhout, Beyond the free spectral range: on-chip spectrometer with multi-color cascaded colloidal quantum-dot photodiodes, European Conference on Integrated Optics, Germany, p.176 (2024)  .
I. Tanghe, A. Waters, J. Huang, K. Molkens, T. Vandekerckhove, D. Van Thourhout, M. Zamkov, P. Geiregat, Using Colloidal Quantum Shells as a Novel Gain Medium for Integrated Visible Lasers, Conference on Lasers and Electro-Optics, United States, (2024)  .
I. Tanghe, M. Samoli, I. Wagner, S. A. Cayan, A. H. Khan, K. Chen, J. Hodgkiss, I. Moreels, D. Van Thourhout, Z. Hens, P. Geiregat, Solution processed bulk colloidal nanocrystals as gain material in photonic crystal surface emitting lasers across the green-red spectrum, SPIE Photonics West, United States, p.paper 12864-34 (4 pages) doi:10.1117/12.2692651 (2024)  .
I. Tanghe, M. Samoli, I. Wagner, S. A. Cayan, A. H. Khan, K. Chen, J. Hodgkiss, I. Moreels, D. Van Thourhout, Z. Hens, P. Geiregat, Understanding the mechanisms behind optical gain in bulk solution processible semiconductors, SPIE Photonics West, United States, p.Paper 12884-31 (3 pages) doi:10.1117/12.3000550 (2024)  .
C. Pang, Y. Deng, E. Kheradmand, L. Moreno Hagelsieb, D. Cheyns, P. Geiregat, Z. Hens, D. Van Thourhout, A colloidal-quantum-dot solution for photodetection beyond 1.6um, Annual Symposium of the IEEE Photonics Society Benelux Chapter, (2023)  .
I. Tanghe, K. Molkens, T. Vandekerckhove, A. Waters, J. Beavon, D. Van Thourhout, M. Zamkov, P. Geiregat, Using colloidal quantum shells as a novel gain medium for integrated visible lasers, Annual Symposium of the IEEE Photonics Society Benelux Chapter, Belgium, (2023)  .
C. Pang, Y. Deng, E. Kheradmand, N. Poonkottil, R. Petit, L. Elsinger, C. Detavernier, P. Geiregat, Z. Hens, D. Van Thourhout, Integrated Spectrometer Based on Arrayed Waveguide Grating and PbS Colloidal Quantum Dot Photodiode Array, Conference on Lasers and Electro-Optics, United States, (2023)  .
C. Pang, Y. Deng, E. Kheradmand, R. Petit, L. Elsinger, C. Detavernier, P. Geiregat, Z. Hens, D. Van Thourhout, Monolithic heterogeneous integration of PbS colloidal quantum dot photodiode on silicon nitride, Frontiers in Optics, (2022)  .
L. Elsinger, I. Tanghe, F. Van Acker, N. K. Zawacka, R. Petit, K. Neyts, C. Detavernier, P. Geiregat, Z. Hens, D. Van Thourhout, A Waveguide-Coupled Colloidal Quantum Dot LED on a Silicon Nitride Platform, Conference on Lasers and Electro-Optics, United States, p.STh1J.8 doi:10.1364/CLEO_SI.2020.STh1J.8 (2020).
L. Elsinger, R. Gourgues, I. E. Zadeh, J. Maes, A. Guardiani, G. Bulgarini, S. F. Pereira, S. N. Dorenbos, V. Zwiller, Z. Hens, D. Van Thourhout, Wavelength-resolved Purcell enhancement of PbS/CdS quantum dots measured on a chip-based platform, Photonics West (OPTO), Proc. SPIE 11289, United States, p. 1128914 doi:10.1117/12.2547265 (2020).
L. Elsinger, R. Gourgues, I. E. Zadeh, J. Maes, V. Chandrasekaran, G. Bulgarini, V. Zwiller, Z. Hens, D. Van Thourhout, On-chip Spectroscopy of PbS/CdS Colloidal QDs using Superconducting Nanowire Single Photon Detectors (SNSPDs) on a Silicon Nitride Photonic Platform, nanoGe Fall Meeting 2018, Spain, (2018).
L. Elsinger, R. Gourgues, J. Maes, I. E. Zadeh, V. Chandrasekaran, G. Bulgarini, V. Zwiller, Z. Hens, D. Van Thourhout, Integration of colloidal QDs with plasmonics and superconducting nanowire detectors on a silicon photonic platform, QD2018 - the Tenth International Conference on Quantum Dots, Canada, (2018).
L. Elsinger, Y. Zhu, W. Xie, I. Tanghe, S. Bisschop, V. Chandrasekaran, E. Brainis, P. Geiregat, Z. Hens, D. Van Thourhout, A Hybrid SiN-QDOT platform for visible photonics, CLEO 2018 (invited), United States, p.SW4I.4 doi:10.1364/cleo_si.2018.sw4i.4 (2018)  .
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