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Salzmann B, Wit JD, Li C, Arenas-Esteban D, Bals S, Meijerink A, Vanmaekelbergh D. Two-Dimensional CdSe-PbSe Heterostructures and PbSe Nanoplatelets: Formation, Atomic Structure, and Optical Properties. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2022; 126:1513-1522. [PMID: 35116087 PMCID: PMC8802322 DOI: 10.1021/acs.jpcc.1c09412] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 12/30/2021] [Indexed: 06/12/2023]
Abstract
Cation exchange enables the preparation of nanocrystals (NCs), which are not reachable by direct synthesis methods. In this work, we applied Pb2+-for-Cd2+ cation exchange on CdSe nanoplatelets (NPLs) to prepare two-dimensional CdSe-PbSe heterostructures and PbSe NPLs. Lowering the reaction temperature slowed down the rate of cation exchange, making it possible to characterize the intermediary NCs ex situ with atomically resolved high-angle annular dark-field scanning transmission electron microscopy and optical spectroscopy. We observe that the Pb2+-for-Cd2+ cation exchange starts from the vertices of the NPLs and grows into the zinc blende CdSe (zb-CdSe) lattice as a rock salt PbSe phase (rs-PbSe), while the anion (selenium) sublattice is being preserved. In agreement with previous works on CdTe-PbTe films, the interfaces between zb-CdSe and rs-PbSe consist of shared {001} and {011} planes. The final PbSe NPLs are highly crystalline and contain protrusions at the edges, which are slightly rotated, indicating an atomic reconfiguration of material. The growth of PbSe domains into CdSe NPLs could also be monitored by the emission peak shift as a function of the exchange time. Temperature-dependent emission measurements confirm a size-dependent change of the band gap energy with temperature and reveal a strong influence of the anisotropic shape. Time-resolved photoluminescence measurements between 4 and 30 K show a dark-bright exciton-state splitting different from PbSe QDs with three-dimensional quantum confinement.
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Affiliation(s)
- Bastiaan
B.V. Salzmann
- Condensed
Matter & Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, 3508TA Utrecht, The Netherlands
| | - Jur de Wit
- Condensed
Matter & Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, 3508TA Utrecht, The Netherlands
| | - Chen Li
- EMAT
and Nanolab Centre of Excellence, Antwerp
University, 2020 Antwerp, Belgium
| | | | - Sara Bals
- EMAT
and Nanolab Centre of Excellence, Antwerp
University, 2020 Antwerp, Belgium
| | - Andries Meijerink
- Condensed
Matter & Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, 3508TA Utrecht, The Netherlands
| | - Daniel Vanmaekelbergh
- Condensed
Matter & Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, 3508TA Utrecht, The Netherlands
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2
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Skurlov I, Sokolova A, Galle T, Cherevkov S, Ushakova E, Baranov A, Lesnyak V, Fedorov A, Litvin A. Temperature-Dependent Photoluminescent Properties of PbSe Nanoplatelets. NANOMATERIALS 2020; 10:nano10122570. [PMID: 33371429 PMCID: PMC7767437 DOI: 10.3390/nano10122570] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/15/2020] [Accepted: 12/18/2020] [Indexed: 01/17/2023]
Abstract
Semiconductor colloidal nanoplatelets (NPLs) are a promising new class of nanostructures that can bring much impact on lightning technologies, light-emitting diodes (LED), and laser fabrication. Indeed, great progress has been made in optimizing the optical properties of the NPLs for the visible spectral range, which has already made the implementation of a number of effective devices on their basis possible. To date, state-of-the-art near-infrared (NIR)-emitting NPLs are significantly inferior to their visible-range counterparts, although it would be fair to say that they received significantly less research attention so far. In this study, we report a comprehensive analysis of steady-state and time-dependent photoluminescence (PL) properties of four monolayered (ML) PbSe NPLs. The PL measurements are performed in a temperature range of 78–300 K, and their results are compared to those obtained for CdSe NPLs and PbSe quantum dots (QDs). We show that multiple emissive states, both band-edge and trap-related, are responsible for the formation of the NPLs’ PL band. We demonstrate that the widening of the PL band is caused by the inhomogeneous broadening rather than homogeneous one, and analyze the possible contributions to PL broadening.
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Affiliation(s)
- Ivan Skurlov
- Center of Information Optical Technology, The Laboratory “Optics of Quantum Nanostructures”, ITMO University, 49 Kronverksky Pr., St. Petersburg 197101, Russia; (I.S.); (A.S.); (S.C.); (E.U.); (A.B.); (A.F.)
| | - Anastasiia Sokolova
- Center of Information Optical Technology, The Laboratory “Optics of Quantum Nanostructures”, ITMO University, 49 Kronverksky Pr., St. Petersburg 197101, Russia; (I.S.); (A.S.); (S.C.); (E.U.); (A.B.); (A.F.)
| | - Tom Galle
- Physical Chemistry, TU Dresden, Zellescher Weg 19, 01069 Dresden, Germany; (T.G.); (V.L.)
| | - Sergei Cherevkov
- Center of Information Optical Technology, The Laboratory “Optics of Quantum Nanostructures”, ITMO University, 49 Kronverksky Pr., St. Petersburg 197101, Russia; (I.S.); (A.S.); (S.C.); (E.U.); (A.B.); (A.F.)
| | - Elena Ushakova
- Center of Information Optical Technology, The Laboratory “Optics of Quantum Nanostructures”, ITMO University, 49 Kronverksky Pr., St. Petersburg 197101, Russia; (I.S.); (A.S.); (S.C.); (E.U.); (A.B.); (A.F.)
| | - Alexander Baranov
- Center of Information Optical Technology, The Laboratory “Optics of Quantum Nanostructures”, ITMO University, 49 Kronverksky Pr., St. Petersburg 197101, Russia; (I.S.); (A.S.); (S.C.); (E.U.); (A.B.); (A.F.)
| | - Vladimir Lesnyak
- Physical Chemistry, TU Dresden, Zellescher Weg 19, 01069 Dresden, Germany; (T.G.); (V.L.)
| | - Anatoly Fedorov
- Center of Information Optical Technology, The Laboratory “Optics of Quantum Nanostructures”, ITMO University, 49 Kronverksky Pr., St. Petersburg 197101, Russia; (I.S.); (A.S.); (S.C.); (E.U.); (A.B.); (A.F.)
| | - Aleksandr Litvin
- Center of Information Optical Technology, The Laboratory “Optics of Quantum Nanostructures”, ITMO University, 49 Kronverksky Pr., St. Petersburg 197101, Russia; (I.S.); (A.S.); (S.C.); (E.U.); (A.B.); (A.F.)
- Correspondence: ; Tel.: +7-950-0286240
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3
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McCall KM, Sakhatskyi K, Lehmann E, Walfort B, Losko AS, Montanarella F, Bodnarchuk MI, Krieg F, Kelestemur Y, Mannes D, Shynkarenko Y, Yakunin S, Kovalenko MV. Fast Neutron Imaging with Semiconductor Nanocrystal Scintillators. ACS NANO 2020; 14:14686-14697. [PMID: 32897688 DOI: 10.1021/acsnano.0c06381] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Fast neutrons offer high penetration capabilities for both light and dense materials due to their comparatively low interaction cross sections, making them ideal for the imaging of large-scale objects such as large fossils or as-built plane turbines, for which X-rays or thermal neutrons do not provide sufficient penetration. However, inefficient fast neutron detection limits widespread application of this technique. Traditional phosphors such as ZnS:Cu embedded in plastics are utilized as scintillators in recoil proton detectors for fast neutron imaging. However, these scintillation plates exhibit significant light scattering due to the plastic-phosphor interface along with long-lived afterglow (on the order of minutes), and therefore alternative solutions are needed to increase the availability of this technique. Here, we utilize colloidal nanocrystals (NCs) in hydrogen-dense solvents for fast neutron imaging through the detection of recoil protons generated by neutron scattering, demonstrating the efficacy of nanomaterials as scintillators in this detection scheme. The light yield, spatial resolution, and neutron-vs-gamma sensitivity of several chalcogenide (CdSe and CuInS2)-based and perovskite halide-based NCs are determined, with only a short-lived afterglow (below the order of seconds) observed for all of these NCs. FAPbBr3 NCs exhibit the brightest total light output at 19.3% of the commercial ZnS:Cu(PP) standard, while CsPbBrCl2:Mn NCs offer the best spatial resolution at ∼2.6 mm. Colloidal NCs showed significantly lower gamma sensitivity than ZnS:Cu; for example, 79% of the FAPbBr3 light yield results from neutron-induced radioluminescence and hence the neutron-specific light yield of FAPbBr3 is 30.4% of that of ZnS:Cu(PP). Concentration and thickness-dependent measurements highlight the importance of increasing concentrations and reducing self-absorption, yielding design principles to optimize and foster an era of NC-based scintillators for fast neutron imaging.
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Affiliation(s)
- Kyle M McCall
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1, Zürich, CH-8093, Switzerland
- Laboratory for Thin Films and Photovoltaics, Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, Dübendorf, CH-8600, Switzerland
| | - Kostiantyn Sakhatskyi
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1, Zürich, CH-8093, Switzerland
- Laboratory for Thin Films and Photovoltaics, Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, Dübendorf, CH-8600, Switzerland
| | | | | | - Adrian S Losko
- Forschungs-Neutronenquelle Heinz Maier-Leibnitz, Garching, 85748, Germany
| | - Federico Montanarella
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1, Zürich, CH-8093, Switzerland
- Laboratory for Thin Films and Photovoltaics, Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, Dübendorf, CH-8600, Switzerland
| | - Maryna I Bodnarchuk
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1, Zürich, CH-8093, Switzerland
- Laboratory for Thin Films and Photovoltaics, Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, Dübendorf, CH-8600, Switzerland
| | - Franziska Krieg
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1, Zürich, CH-8093, Switzerland
- Laboratory for Thin Films and Photovoltaics, Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, Dübendorf, CH-8600, Switzerland
| | - Yusuf Kelestemur
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1, Zürich, CH-8093, Switzerland
- Laboratory for Thin Films and Photovoltaics, Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, Dübendorf, CH-8600, Switzerland
- Department of Metallurgical and Materials Engineering, Atilim University, Ankara, 06830, Turkey
| | - David Mannes
- Paul Scherrer Institut, Villigen PSI, 5232, Switzerland
| | - Yevhen Shynkarenko
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1, Zürich, CH-8093, Switzerland
- Laboratory for Thin Films and Photovoltaics, Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, Dübendorf, CH-8600, Switzerland
| | - Sergii Yakunin
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1, Zürich, CH-8093, Switzerland
- Laboratory for Thin Films and Photovoltaics, Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, Dübendorf, CH-8600, Switzerland
| | - Maksym V Kovalenko
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1, Zürich, CH-8093, Switzerland
- Laboratory for Thin Films and Photovoltaics, Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, Dübendorf, CH-8600, Switzerland
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4
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Metlin M, Ambrozevich S, Korshunov V, Fedyanin V, Tananaev P, Taydakov I. Near-infrared single-photon emitters based on colloidal CdSe/CdS/ZnS nanocrystals and Nd(III) 1,3-diketonate. OPTICS LETTERS 2020; 45:5480-5483. [PMID: 33001924 DOI: 10.1364/ol.401227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 08/29/2020] [Indexed: 06/11/2023]
Abstract
A novel, to the best of our knowledge, approach to the design of the single-photon sources emitting in the spectral regions of 1060 and 1337 nm was developed. A unique hybrid structure based on colloidal CdSe/CdS/ZnS nanocrystals and neodymium(III) 1,3-diketonate was created. Direct energy transfer from the CdSe/CdS/ZnS single nanocrystal to the near-infrared (NIR) luminescent Nd(III) complex was observed and investigated by spectroscopic methods. The single-photon emission mode was confirmed for the novel hybrid source by Hanbury Brown and Twiss experiments.
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5
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Zámbó D, Schlosser A, Rusch P, Lübkemann F, Koch J, Pfnür H, Bigall NC. A Versatile Route to Assemble Semiconductor Nanoparticles into Functional Aerogels by Means of Trivalent Cations. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1906934. [PMID: 32162787 DOI: 10.1002/smll.201906934] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 02/17/2020] [Accepted: 02/18/2020] [Indexed: 05/14/2023]
Abstract
3D nanoparticle assemblies offer a unique platform to enhance and extend the functionality and optical/electrical properties of individual nanoparticles. Especially, a self-supported, voluminous, and porous macroscopic material built up from interconnected semiconductor nanoparticles provides new possibilities in the field of sensing, optoelectronics, and photovoltaics. Herein, a method is demonstrated for assembling semiconductor nanoparticle systems containing building blocks possessing different composition, size, shape, and surface ligands. The method is based on the controlled destabilization of the particles triggered by trivalent cations (Y3+ , Yb3+ , and Al3+ ). The effect of the cations is investigated via X-ray photoelectron spectroscopy. The macroscopic, self-supported aerogels consist of the hyperbranched network of interconnected CdSe/CdS dot-in-rods, or CdSe/CdS as well as CdSe/CdTe core-crown nanoplatelets is used to demonstrate the versatility of the procedure. The non-oxidative assembly method takes place at room temperature without thermal activation in several hours and preserves the shape and the fluorescence of the building blocks. The assembled nanoparticle network provides longer exciton lifetimes with retained photoluminescence quantum yields, that make these nanostructured materials a perfect platform for novel multifunctional 3D networks in sensing. Various sets of photoelectrochemical measurements on the interconnected semiconductor nanorod structures also reveal the enhanced charge carrier separation.
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Affiliation(s)
- Dániel Zámbó
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Hannover, 30167, Germany
- Laboratory of Nano and Quantum Engineering, Leibniz Universität Hannover, Hannover, 30167, Germany
| | - Anja Schlosser
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Hannover, 30167, Germany
- Laboratory of Nano and Quantum Engineering, Leibniz Universität Hannover, Hannover, 30167, Germany
| | - Pascal Rusch
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Hannover, 30167, Germany
- Laboratory of Nano and Quantum Engineering, Leibniz Universität Hannover, Hannover, 30167, Germany
| | - Franziska Lübkemann
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Hannover, 30167, Germany
- Laboratory of Nano and Quantum Engineering, Leibniz Universität Hannover, Hannover, 30167, Germany
| | - Julian Koch
- Institute of Solid State Physics, Leibniz Universität Hannover, Hannover, 30167, Germany
| | - Herbert Pfnür
- Laboratory of Nano and Quantum Engineering, Leibniz Universität Hannover, Hannover, 30167, Germany
- Institute of Solid State Physics, Leibniz Universität Hannover, Hannover, 30167, Germany
| | - Nadja C Bigall
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Hannover, 30167, Germany
- Laboratory of Nano and Quantum Engineering, Leibniz Universität Hannover, Hannover, 30167, Germany
- Cluster of Excellence PhoenixD (Photonics, Optics, and Engineering - Innovation Across Disciplines), Leibniz Universität Hannover, Hannover, 30167, Germany
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6
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Wang Y, Pu C, Lei H, Qin H, Peng X. CdSe@CdS Dot@Platelet Nanocrystals: Controlled Epitaxy, Monoexponential Decay of Two-Dimensional Exciton, and Nonblinking Photoluminescence of Single Nanocrystal. J Am Chem Soc 2019; 141:17617-17628. [DOI: 10.1021/jacs.9b06932] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Yonghong Wang
- Center for Chemistry of Novel & High-Performance Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Chaodan Pu
- Center for Chemistry of Novel & High-Performance Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Hairui Lei
- Center for Chemistry of Novel & High-Performance Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Haiyan Qin
- Center for Chemistry of Novel & High-Performance Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Xiaogang Peng
- Center for Chemistry of Novel & High-Performance Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
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7
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Chen D, Wang A, Buntine MA, Jia G. Recent Advances in Zinc‐Containing Colloidal Semiconductor Nanocrystals for Optoelectronic and Energy Conversion Applications. ChemElectroChem 2019. [DOI: 10.1002/celc.201900838] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Dechao Chen
- Curtin Institute of Functional Molecules and Interfaces School of Molecular and Life Sciences Curtin University WA-6845 Perth Australia
| | - Aixiang Wang
- School of Chemistry and Chemical Engineering Linyi University Linyi 276005 China
| | - Mark A. Buntine
- Curtin Institute of Functional Molecules and Interfaces School of Molecular and Life Sciences Curtin University WA-6845 Perth Australia
| | - Guohua Jia
- Curtin Institute of Functional Molecules and Interfaces School of Molecular and Life Sciences Curtin University WA-6845 Perth Australia
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8
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Stepanidenko EA, Gromova YA, Kormilina TK, Cherevkov SA, Kurshanov DA, Dubavik A, Baranov MA, Medvedev OS, Fedorov AV, Gun'ko YK, Ushakova EV, Baranov AV. Porous flower-like superstructures based on self-assembled colloidal quantum dots for sensing. Sci Rep 2019; 9:617. [PMID: 30679451 PMCID: PMC6346065 DOI: 10.1038/s41598-018-36250-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 11/09/2018] [Indexed: 11/25/2022] Open
Abstract
Quantum dots (QDs) have been envisaged as very promising materials for the development of advanced optical sensors. Here we report a new highly porous luminescent material based on colloidal QDs for potential applications in optical sensing devices. Bulk flower-like porous structures with sizes of hundreds of microns have been produced by slow destabilization of QD solution in the presence of a non-solvent vapor. The porous highly luminescent material was formed from CdSe QDs using the approach of non-solvent destabilization. This material demonstrated a 4-fold decrease in PL signal in the presence of the ammonia vapor. The relationship between the destabilization rate of QDs in solution and the resulting morphology of structural elements has been established. The proposed model of bulk porous flower-like nanostructured material fabrication can be applied to nanoparticles of different nature combining their unique properties. This research opens up a new approach to design novel multi-component composite materials enabling potential performance improvements of various photonic devices.
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Grants
- 14.587.21.0047, project identifier RFMEFI58718X0047 Ministry of Education and Science of the Russian Federation
- 14.587.21.0047, project identifier RFMEFI58718X0047 Ministry of Education and Science of the Russian Federation
- 14.587.21.0047, project identifier RFMEFI58718X0047 Ministry of Education and Science of the Russian Federation
- 14.587.21.0047, project identifier RFMEFI58718X0047 Ministry of Education and Science of the Russian Federation
- 14.587.21.0047, project identifier RFMEFI58718X0047 Ministry of Education and Science of the Russian Federation
- 14.587.21.0047, project identifier RFMEFI58718X0047 Ministry of Education and Science of the Russian Federation
- 14.587.21.0047, project identifier RFMEFI58718X0047 Ministry of Education and Science of the Russian Federation
- 14.587.21.0047, project identifier RFMEFI58718X0047 Ministry of Education and Science of the Russian Federation
- 14.587.21.0047, project identifier RFMEFI58718X0047 Ministry of Education and Science of the Russian Federation
- 14.587.21.0047, project identifier RFMEFI58718X0047 Ministry of Education and Science of the Russian Federation
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Affiliation(s)
| | | | | | | | | | | | | | - Oleg S Medvedev
- Saint-Petersburg State University, Saint Petersburg, 199034, Russia
| | | | - Yurii K Gun'ko
- ITMO University, Saint Petersburg, 197101, Russia
- School of Chemistry and CRANN, Trinity College Dublin, Dublin, 2, Ireland
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Xiao P, Huang J, Yan D, Luo D, Yuan J, Liu B, Liang D. Emergence of Nanoplatelet Light-Emitting Diodes. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E1376. [PMID: 30096754 PMCID: PMC6119858 DOI: 10.3390/ma11081376] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 07/19/2018] [Accepted: 07/27/2018] [Indexed: 12/20/2022]
Abstract
Since 2014, nanoplatelet light-emitting diodes (NPL-LEDs) have been emerged as a new kind of LEDs. At first, NPL-LEDs are mainly realized by CdSe based NPLs. Since 2016, hybrid organic-inorganic perovskite NPLs are found to be effective to develop NPL-LEDs. In 2017, all-inorganic perovskite NPLs are also demonstrated for NPL-LEDs. Therefore, the development of NPL-LEDs is flourishing. In this review, the fundamental concepts of NPL-LEDs are first introduced, then the main approaches to realize NPL-LEDs are summarized and the recent progress of representative NPL-LEDs is highlighted, finally the challenges and opportunities for NPL-LEDs are presented.
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Affiliation(s)
- Peng Xiao
- School of Physics and Optoelectronic Engineering, Foshan University, Foshan 528000, China.
| | - Junhua Huang
- School of Physics and Optoelectronic Engineering, Foshan University, Foshan 528000, China.
| | - Dong Yan
- School of Physics and Optoelectronic Engineering, Foshan University, Foshan 528000, China.
| | - Dongxiang Luo
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.
| | - Jian Yuan
- School of Physics and Optoelectronic Engineering, Foshan University, Foshan 528000, China.
| | - Baiquan Liu
- LUMINOUS, Center of Excellent for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, Singapore.
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.
| | - Dong Liang
- LUMINOUS, Center of Excellent for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, Singapore.
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