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Gungor K, Erdem O, Guzelturk B, Unal E, Jun S, Jang E, Demir HV. Strongly polarized color conversion of isotropic colloidal quantum dots coupled to fano resonances. NANOSCALE HORIZONS 2024. [PMID: 39045702 DOI: 10.1039/d4nh00101j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
Colloidal quantum dots (QDs) offer high color purity essential to high-quality liquid crystal displays (LCDs), which enables unprecedented levels of color enrichment in LCD-TVs today. However, for LCDs requiring polarized backplane illumination in operation, highly polarized light generation using inherently isotropic QDs remains a fundamental challenge. Here, we show strongly polarized color conversion of isotropic QDs coupled to Fano resonances of v-grooved surfaces compatible with surface-normal LED illumination for next-generation QD-TVs. This architecture overcomes the critically oblique excitation of surface plasmon coupled emission by using v-shapes imprinted on the backlight unit (BLU). With isotropic QDs coated on the proposed v-BLU surface, we experimentally measured a far-field polarization contrast ratio of ∼10. Full electromagnetic solution shows Fano line-shape transmission in transverse magnetic polarization allowing for high transmission as an indication for forward-scattering configuration. Of these QDs coupled to the surface plasmon-polariton modes, we observed strong modifications in their emission kinetics revealed by time-resolved photoluminescence spectroscopy and via dipole orientations identified by back focal plane imaging. This collection of findings indicates conclusively that these isotropic QDs are forced to radiate in a linearly polarized state from the patterned planar surface under surface-normal excitation. For next-generation QD-TVs, the proposed polarized color-converting isotropic QDs on such v-BLUs can be deployed in bendable electronic displays.
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Affiliation(s)
- Kivanc Gungor
- Department of Electrical and Electronics Engineering, Department of Physics, UNAM--Institute of Materials Science and Nanotechnology and the National Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey.
| | - Onur Erdem
- Department of Electrical and Electronics Engineering, Department of Physics, UNAM--Institute of Materials Science and Nanotechnology and the National Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey.
| | - Burak Guzelturk
- Department of Electrical and Electronics Engineering, Department of Physics, UNAM--Institute of Materials Science and Nanotechnology and the National Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey.
| | - Emre Unal
- Department of Electrical and Electronics Engineering, Department of Physics, UNAM--Institute of Materials Science and Nanotechnology and the National Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey.
| | - Shinae Jun
- Inorganic Material Laboratory, Material Research Center, Samsung Advanced Institute of Technology, Samsung Electronics Co., 130 Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 443-803, South Korea
| | - Eunjoo Jang
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - Hilmi Volkan Demir
- Department of Electrical and Electronics Engineering, Department of Physics, UNAM--Institute of Materials Science and Nanotechnology and the National Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey.
- Luminous! Center of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, School of Physical and Mathematical Sciences, and School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
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Huang H, Zheng S, Sun W. Beam manipulation for quantum dot light-emitting diode with an Ag grating and a phase-gradient metasurface. OPTICS EXPRESS 2022; 30:28345-28357. [PMID: 36299032 DOI: 10.1364/oe.463772] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 07/08/2022] [Indexed: 06/16/2023]
Abstract
The quantum dot (QD) light-emitting diode (LED) is a robust scheme for single photon source. However, the spontaneous emission of a QD LED has arbitrary directions and polarizations, which is disadvantage for photon collection and manipulation. We propose a QD LED integrated with an Ag grating and a phase-gradient metasurface. The circular patterned Ag grating is adopted to collimate the emission beam with right phase and improve its spatial coherence, therefore a phase-gradient metasurface can work for beam manipulation. The 10°, 20°, and 30° angle deflection as well as doughnut-pattern generation are demonstrated by numerical simulation. A small metasurface with the width of 6 µm can provide a collection efficiency of 25.9% at the deflection angle of 10°. Furthermore, only one single QD can be selected from a QD assembly with a low-density.
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De Leo E, Rossinelli AA, Marqués-Gallego P, Poulikakos LV, Norris DJ, Prins F. Polarization-based colour tuning of mixed colloidal quantum-dot thin films using direct patterning. NANOSCALE 2022; 14:4929-4934. [PMID: 35316316 DOI: 10.1039/d1nr07136j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Colloidal quantum-dots (cQDs) are finding increasingly widespread application in photonics and optoelectronics, providing high brightness and record-wide colour gamuts. However, the external quantum efficiencies in thin-film device architectures are still limited due to losses into waveguide modes and different strategies are being explored to promote the outcoupling of emission. Here we use a template-stripping-based direct-patterning strategy to fabricate linear gratings at the surface of cQD thin films. The linear gratings enhance optical outcoupling through Bragg scattering, yielding bright emission with a strong degree of linear polarization. By patterning linear gratings with different periodicities and orientations onto a film of mixed-colour cQDs, we demonstrate polarization-based active colour tuning of the thin-film emission.
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Affiliation(s)
- Eva De Leo
- Optical Materials Engineering Laboratory, ETH Zürich, Leonhardstrasse 21, Zürich 8092, Switzerland.
| | - Aurelio A Rossinelli
- Optical Materials Engineering Laboratory, ETH Zürich, Leonhardstrasse 21, Zürich 8092, Switzerland.
| | - Patricia Marqués-Gallego
- Optical Materials Engineering Laboratory, ETH Zürich, Leonhardstrasse 21, Zürich 8092, Switzerland.
| | - Lisa V Poulikakos
- Optical Materials Engineering Laboratory, ETH Zürich, Leonhardstrasse 21, Zürich 8092, Switzerland.
| | - David J Norris
- Optical Materials Engineering Laboratory, ETH Zürich, Leonhardstrasse 21, Zürich 8092, Switzerland.
| | - Ferry Prins
- Optical Materials Engineering Laboratory, ETH Zürich, Leonhardstrasse 21, Zürich 8092, Switzerland.
- Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, Calle Francisco Tomas y Valiente 6, Madrid 29049, Spain
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Butcher A, High AA. All-dielectric multi-resonant bullseye antennas. OPTICS EXPRESS 2022; 30:12092-12103. [PMID: 35473138 DOI: 10.1364/oe.455232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 03/12/2022] [Indexed: 06/14/2023]
Abstract
Integrated devices that generate multiple optical resonances in the same volume can enhance on-chip nonlinear frequency generation, nonlinear spectroscopy, and quantum sensing. Here, we demonstrate circular Bragg antennas that exhibit multiple spatially overlapping, polarization-selective optical resonances. Using templated atomic layer deposition of TiO2, these devices can be fabricated on arbitrary substrates, making them compatible with a wide range of nonlinear materials and sensing targets, and couple efficiently to underlying films. In this work, we detail the design, simulation, and fabrication of all-dielectric multi-resonant bullseye antennas and characterize their performance using polarized broadband reflection spectroscopy.
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Chen M, Lu L, Yu H, Li C, Zhao N. Integration of Colloidal Quantum Dots with Photonic Structures for Optoelectronic and Optical Devices. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2101560. [PMID: 34319002 PMCID: PMC8456226 DOI: 10.1002/advs.202101560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/23/2021] [Indexed: 05/05/2023]
Abstract
Colloidal quantum dot (QD), a solution-processable nanoscale optoelectronic building block with well-controlled light absorption and emission properties, has emerged as a promising material system capable of interacting with various photonic structures. Integrated QD/photonic structures have been successfully realized in many optical and optoelectronic devices, enabling enhanced performance and/or new functionalities. In this review, the recent advances in this research area are summarized. In particular, the use of four typical photonic structures, namely, diffraction gratings, resonance cavities, plasmonic structures, and photonic crystals, in modulating the light absorption (e.g., for solar cells and photodetectors) or light emission (e.g., for color converters, lasers, and light emitting diodes) properties of QD-based devices is discussed. A brief overview of QD-based passive devices for on-chip photonic circuit integration is also presented to provide a holistic view on future opportunities for QD/photonic structure-integrated optoelectronic systems.
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Affiliation(s)
- Mengyu Chen
- School of Electronic Science and EngineeringXiamen UniversityXiamen361005P. R. China
- Department of Electronic EngineeringThe Chinese University of Hong KongShatinNew TerritoriesHong Kong SARChina
| | - Lihua Lu
- School of Electronic Science and EngineeringXiamen UniversityXiamen361005P. R. China
| | - Hui Yu
- Department of Electronic EngineeringThe Chinese University of Hong KongShatinNew TerritoriesHong Kong SARChina
| | - Cheng Li
- School of Electronic Science and EngineeringXiamen UniversityXiamen361005P. R. China
- Future DisplayInstitute of XiamenXiamen361005P. R. China
| | - Ni Zhao
- Department of Electronic EngineeringThe Chinese University of Hong KongShatinNew TerritoriesHong Kong SARChina
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Rong K, Wang B, Reuven A, Maguid E, Cohn B, Kleiner V, Katznelson S, Koren E, Hasman E. Photonic Rashba effect from quantum emitters mediated by a Berry-phase defective photonic crystal. NATURE NANOTECHNOLOGY 2020; 15:927-933. [PMID: 32839591 DOI: 10.1038/s41565-020-0758-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 07/27/2020] [Indexed: 06/11/2023]
Abstract
Heterostructures combining a thin layer of quantum emitters and planar nanostructures enable custom-tailored photoluminescence in an integrated fashion. Here, we demonstrate a photonic Rashba effect from valley excitons in a WSe2 monolayer, which is incorporated into a photonic crystal slab with geometric phase defects, that is, into a Berry-phase defective photonic crystal. This phenomenon of spin-split dispersion in momentum space arises from a coherent geometric phase pickup assisted by the Berry-phase defect mode. The valley excitons effectively interact with the defects for site-controlled excitation, photoluminescence enhancement and spin-dependent manipulation. Specifically, the spin-dependent branches of photoluminescence in momentum space originate from valley excitons with opposite helicities and evidence the valley separation at room temperature. To further demonstrate the versatility of the Berry-phase defective photonic crystals, we use this concept to separate opposite spin states of quantum dot emission. This spin-enabled manipulation of quantum emitters may enable highly efficient metasurfaces for customized planar sources with spin-polarized directional emission.
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Affiliation(s)
- Kexiu Rong
- Micro and Nanooptics Laboratory, Faculty of Mechanical Engineering and Russell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa, Israel
| | - Bo Wang
- Micro and Nanooptics Laboratory, Faculty of Mechanical Engineering and Russell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa, Israel
| | - Avi Reuven
- Micro and Nanooptics Laboratory, Faculty of Mechanical Engineering and Russell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa, Israel
| | - Elhanan Maguid
- Micro and Nanooptics Laboratory, Faculty of Mechanical Engineering and Russell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa, Israel
| | - Bar Cohn
- Micro and Nanooptics Laboratory, Faculty of Mechanical Engineering and Russell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa, Israel
| | - Vladimir Kleiner
- Micro and Nanooptics Laboratory, Faculty of Mechanical Engineering and Russell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa, Israel
| | - Shaul Katznelson
- Faculty of Materials Science and Engineering, Technion-Israel Institute of Technology, Haifa, Israel
| | - Elad Koren
- Faculty of Materials Science and Engineering, Technion-Israel Institute of Technology, Haifa, Israel
| | - Erez Hasman
- Micro and Nanooptics Laboratory, Faculty of Mechanical Engineering and Russell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa, Israel.
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7
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Winkler JM, Ruckriegel MJ, Rojo H, Keitel RC, De Leo E, Rabouw FT, Norris DJ. Dual-Wavelength Lasing in Quantum-Dot Plasmonic Lattice Lasers. ACS NANO 2020; 14:5223-5232. [PMID: 32159334 DOI: 10.1021/acsnano.9b09698] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Arrays of metallic particles patterned on a substrate have emerged as a promising design for on-chip plasmonic lasers. In past examples of such devices, the periodic particles provided feedback at a single resonance wavelength, and organic dye molecules were used as the gain material. Here, we introduce a flexible template-based fabrication method that allows a broader design space for Ag particle-array lasers. Instead of dye molecules, we integrate colloidal quantum dots (QDs), which offer better photostability and wavelength tunability. Our fabrication approach also allows us to easily adjust the refractive index of the substrate and the QD-film thickness. Exploiting these capabilities, we demonstrate not only single-wavelength lasing but dual-wavelength lasing via two distinct strategies. First, by using particle arrays with rectangular lattice symmetries, we obtain feedback from two orthogonal directions. The two output wavelengths from this laser can be selected individually using a linear polarizer. Second, by adjusting the QD-film thickness, we use higher-order transverse waveguide modes in the QD film to obtain dual-wavelength lasing at normal and off-normal angles from a symmetric square array. We thus show that our approach offers various design possibilities to tune the laser output.
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Affiliation(s)
- Jan M Winkler
- Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
| | - Max J Ruckriegel
- Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
| | - Henar Rojo
- Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
| | - Robert C Keitel
- Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
| | - Eva De Leo
- Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
| | - Freddy T Rabouw
- Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
| | - David J Norris
- Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
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Röhrich R, Hoekmeijer C, Osorio CI, Koenderink AF. Quantifying single plasmonic nanostructure far-fields with interferometric and polarimetric k-space microscopy. LIGHT, SCIENCE & APPLICATIONS 2018; 7:65. [PMID: 30245812 PMCID: PMC6134066 DOI: 10.1038/s41377-018-0059-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 08/02/2018] [Accepted: 08/14/2018] [Indexed: 05/29/2023]
Abstract
Optically resonant nanoantennae are key building blocks for metasurfaces, nanosensors, and nanophotonic light sources due to their ability to control the amplitude, phase, directivity, and polarization of scattered light. Here, we report an experimental technique for the full recovery of all degrees of freedom encoded in the far-field radiated by a single nanostructure using a high-NA Fourier microscope equipped with digital off-axis holography. This method enables full decomposition of antenna-physics in its multipole contributions and gives full access to the orbital and spin angular momentum properties of light scattered by single nano-objects. Our results demonstrate these capabilities through a quantitative assessment of the purity of the "selection rules" for orbital angular momentum transfer by plasmonic spiral nanostructures.
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Affiliation(s)
- Ruslan Röhrich
- Center for Nanophotonics, AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
- ARCNL, Science Park 104, 1098 XG Amsterdam, The Netherlands
| | - Chris Hoekmeijer
- Center for Nanophotonics, AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
| | - Clara I. Osorio
- Center for Nanophotonics, AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
| | - A. Femius Koenderink
- Center for Nanophotonics, AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
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