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Yeh IH, Ghobadifard M, Feng L, Galievsky V, Radovanovic PV. Origin of Dopant-Carrier Exchange Coupling and Excitonic Zeeman Splitting in Mn 2+-Doped Lead Halide Perovskite Nanocrystals. NANO LETTERS 2024; 24:10554-10561. [PMID: 39151058 DOI: 10.1021/acs.nanolett.4c02640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/18/2024]
Abstract
Low-dimensional metal halide perovskites have unique optical and electrical properties that render them attractive for the design of diluted magnetic semiconductors. However, the nature of dopant-exciton exchange interactions that result in spin-polarization of host-lattice charge carriers as a basis for spintronics remains unexplored. Here, we investigate Mn2+-doped CsPbCl3 nanocrystals using magnetic circular dichroism spectroscopy and show that Mn2+ dopants induce excitonic Zeeman splitting which is strongly dependent on the nature of the band-edge structure. We demonstrate that the largest splitting corresponds to exchange interactions involving the excited state at the M-point along the spin-orbit split-off conduction band edge. This splitting gives rise to an absorption-like C-term excitonic MCD signal, with the estimated effective g-factor (geff) of ca. 70. The results of this work help resolve the assignment of absorption transitions observed for metal halide perovskite nanocrystals and allow for a design of new diluted magnetic semiconductor materials for spintronics applications.
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Affiliation(s)
- I-Hsuan Yeh
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Mahdieh Ghobadifard
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Lin Feng
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Victor Galievsky
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Pavle V Radovanovic
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
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2
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Singh M, Scotognella F, Paternò GM. Degenerately doped metal oxide nanocrystals for infrared light harvesting: insight into their plasmonic properties and future perspectives. MATERIALS ADVANCES 2024; 5:6796-6812. [PMID: 39130726 PMCID: PMC11307255 DOI: 10.1039/d4ma00426d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Accepted: 07/30/2024] [Indexed: 08/13/2024]
Abstract
The tuneability of the localized surface plasmon resonance (LSPR) of degenerately doped metal oxide (MOX) nanocrystals (NCs) over a wide range of the infrared (IR) region by controlling NC size and doping content offers a unique opportunity to develop a future generation of optoelectronic and photonic devices like IR photodetectors and sensors. The central aim of this review article is to highlight the distinctive and remarkable plasmonic properties of degenerately or heavily doped MOX nanocrystals by reviewing the comprehensive literature reported so far. In particular, the literature of each MOX NC, i.e. ZnO, CdO, In2O3, and WO3 doped with different dopants, is discussed separately. In addition to discussion of the most commonly used colloidal synthesis approaches, the ultrafast dynamics of charge carriers in NCs and the extraction of LSPR-assisted hot-carriers are also discussed in detail. Finally, future prospective applications of MOX NCs in IR photodetectors and photovoltaic (PV) self-powered chemical sensors are also presented.
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Affiliation(s)
- Mandeep Singh
- Physics Department, Politecnico di Milano Piazza L. da Vinci 32 20133 Milano Italy
| | - Francesco Scotognella
- Department of Applied Science and Technology, Politecnico di Torino Corso Duca degli Abruzzi 24 Torino 10129 Italy
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3
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Kenny-Wilby A, Wedde ES, Zorn S, Gojsevic M, Radovanovic PV. Dual Exciton Polarization in Bipolar CeO 2-x Nanocrystals Controlled by Defect-Based Redox Processes. J Am Chem Soc 2024; 146:17986-17994. [PMID: 38914978 DOI: 10.1021/jacs.4c04366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
Discovering alternative means to control electronic states in semiconductor nanostructures is the key to the development of new quantum technologies. Controlling the cyclotron motion of free charge carriers in semiconductor nanocrystals using an external magnetic field generates a tunable angular momentum, as a collective electronic degree of freedom, which can be imparted to the electronic band states to achieve complete exciton polarization. The sign of this polarization is determined by the type of majority charge carriers in a given lattice. Using magnetic circular dichroism spectroscopy, we demonstrate a simultaneous polarization of excitonic states in substoichiometric oxygen-deficient CeO2-x nanocrystals associated with electrons and holes, which can be controlled by the thermal treatment of colloidal nanocrystals in oxidizing or reducing conditions. The presence of both occupied and unoccupied midgap states, due to Ce3+ 4f and Ce4+ 4f orbitals, respectively, allows for selective probing of the effect of holes in the valence band (VB → Ce4+ 4f) and electrons in the conduction band (Ce3+ 4f → CB). The two transitions show the opposite sign at 300 K due to the opposite angular momenta associated with cyclotron electrons and holes. The ability to manipulate Ce 4f-derived midgap states by defect formation during the synthesis or postsynthesis treatment allows for a range of new technological applications of CeO2-x nanocrystals in optoelectronics.
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Affiliation(s)
- Aaron Kenny-Wilby
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Emily S Wedde
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Scott Zorn
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Milena Gojsevic
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Pavle V Radovanovic
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
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4
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Gabbani A, Della Latta E, Mohan A, Scarperi A, Li X, Ruggeri M, Martini F, Biccari F, Kociak M, Geppi M, Borsacchi S, Pineider F. Direct Determination of Carrier Parameters in Indium Tin Oxide Nanocrystals. ACS NANO 2024; 18:15139-15153. [PMID: 38804721 DOI: 10.1021/acsnano.4c02875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
We develop here a comprehensive experimental approach to independently determine charge carrier parameters, namely, carrier density and mass, in plasmonic indium tin oxide nanocrystals. Typically, in plasmonic nanocrystals, only the ratio between these two parameters is accessible through optical absorption experiments. The multitechnique methodology proposed here combines single particle and ensemble optical and magneto-optical spectroscopies, also using 119Sn solid-state nuclear magnetic resonance spectroscopy to probe the surface depletion layer. Our methodology overcomes the limitations of standard fitting approaches based on absorption spectroscopy and ultimately gives access to carrier effective mass directly on the NCs, discarding the use of literature value based on bulk or thin film materials. We found that mass values depart appreciably from those measured on thin films; consequently, we found carrier density values that are different from reported literature values for similar systems. The effective mass was found to deviate from the parabolic approximation at a high carrier density. Finally, the dopant activation and defect diagram for ITO NCs for tin doping between 2.5 and 15% are determined. This approach can be generalized to other plasmonic heavily doped semiconductor nanostructures and represents, to the best of our knowledge, the only method to date to characterize the full Drude parameter space of 0-D nanosystems.
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Affiliation(s)
- Alessio Gabbani
- Department of Chemistry and Industrial Chemistry, Università di Pisa, via G. Moruzzi 13, 56124 Pisa, Italy
- Department of Physics and Astronomy, Università degli Studi di Firenze, via Sansone 1, 50019 Sesto Fiorentino, (FI), Italy
| | - Elisa Della Latta
- Department of Chemistry and Industrial Chemistry, Università di Pisa, via G. Moruzzi 13, 56124 Pisa, Italy
| | - Ananthakrishnan Mohan
- Department of Chemistry and Industrial Chemistry, Università di Pisa, via G. Moruzzi 13, 56124 Pisa, Italy
| | - Andrea Scarperi
- Department of Chemistry and Industrial Chemistry, Università di Pisa, via G. Moruzzi 13, 56124 Pisa, Italy
| | - Xiaoyan Li
- Laboratoire de Physique des Solides, Université Paris-Saclay, CNRS, 91405 Orsay, France
| | - Marina Ruggeri
- Department of Chemistry and Industrial Chemistry, Università di Pisa, via G. Moruzzi 13, 56124 Pisa, Italy
| | - Francesca Martini
- Department of Chemistry and Industrial Chemistry, Università di Pisa, via G. Moruzzi 13, 56124 Pisa, Italy
- Center for Instrument Sharing of the University of Pisa (CISUP), 56124 Pisa, Italy
| | - Francesco Biccari
- Department of Physics and Astronomy, Università degli Studi di Firenze, via Sansone 1, 50019 Sesto Fiorentino, (FI), Italy
| | - Mathieu Kociak
- Laboratoire de Physique des Solides, Université Paris-Saclay, CNRS, 91405 Orsay, France
| | - Marco Geppi
- Department of Chemistry and Industrial Chemistry, Università di Pisa, via G. Moruzzi 13, 56124 Pisa, Italy
- Institute of Chemistry of Organometallic Compounds, Italian National Research Council (ICCOM-CNR), via G. Moruzzi 1, 56124 Pisa, Italy
- Center for Instrument Sharing of the University of Pisa (CISUP), 56124 Pisa, Italy
| | - Silvia Borsacchi
- Institute of Chemistry of Organometallic Compounds, Italian National Research Council (ICCOM-CNR), via G. Moruzzi 1, 56124 Pisa, Italy
- Center for Instrument Sharing of the University of Pisa (CISUP), 56124 Pisa, Italy
| | - Francesco Pineider
- Department of Chemistry and Industrial Chemistry, Università di Pisa, via G. Moruzzi 13, 56124 Pisa, Italy
- Department of Physics and Astronomy, Università degli Studi di Firenze, via Sansone 1, 50019 Sesto Fiorentino, (FI), Italy
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5
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Gabbani A, Taddeucci A, Bertuolo M, Pineider F, Aronica LA, Di Bari L, Pescitelli G, Zinna F. Magnetic Circular Dichroism Elucidates Molecular Interactions in Aggregated Chiral Organic Materials. Angew Chem Int Ed Engl 2024; 63:e202313315. [PMID: 37962845 DOI: 10.1002/anie.202313315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/20/2023] [Accepted: 11/14/2023] [Indexed: 11/15/2023]
Abstract
Chiral materials formed by aggregated organic compounds play a fundamental role in chiral optoelectronics, photonics and spintronics. Nonetheless, a precise understanding of the molecular interactions involved remains an open problem. Here we introduce magnetic circular dichroism (MCD) as a new tool to elucidate molecular interactions and structural parameters of a supramolecular system. A detailed analysis of MCD together with electronic circular dichroism spectra combined to ab initio calculations unveils essential information on the geometry and energy levels of a self-assembled thin film made of a carbazole di-bithiophene chiral molecule. This approach can be extended to a generality of chiral organic materials and can help rationalizing the fundamental interactions leading to supramolecular order. This in turn could enable a better understanding of structure-property relationships, resulting in a more efficient material design.
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Affiliation(s)
- Alessio Gabbani
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124, Pisa, Italy
- Department of Physics and Astronomy, University of Florence, via Sansone 1, 50019, Sesto Fiorentino, FI, Italy
| | - Andrea Taddeucci
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124, Pisa, Italy
- Current affiliation: Diamond Light Source Ltd., Fermi Avenue, Chilton, Didcot OX11 0DE, UK
| | - Marco Bertuolo
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124, Pisa, Italy
| | - Francesco Pineider
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124, Pisa, Italy
- Department of Physics and Astronomy, University of Florence, via Sansone 1, 50019, Sesto Fiorentino, FI, Italy
| | - Laura Antonella Aronica
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124, Pisa, Italy
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124, Pisa, Italy
| | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124, Pisa, Italy
| | - Francesco Zinna
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124, Pisa, Italy
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6
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Matsui H, Momose A, Yoda H, Fujita A. Mechanically Induced Anisotropic Fragments in Sn-Doped In 2O 3 Nanoparticle Films for Flexible Strain Sensing Based on Surface Plasmons. ACS APPLIED MATERIALS & INTERFACES 2023; 15:50447-50456. [PMID: 37827524 DOI: 10.1021/acsami.3c08862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Recently, mechanical strain sensors have been extensively developed to quantify large mechanical deformations for stretchable and wearable applications. In this study, we propose a plasmonic strain sensor based on the mechanical control of optical properties using an assembled film comprising In2O3: Sn nanoparticles (ITO NP film). The resonant reflectance in the infrared range could effectively be tuned by applying strain to the ITO NP film deposited on an elastomeric polydimethylsiloxane (PDMS) sheet. The change in reflectance was caused by the mechanical deformation of the PDMS sheet. The operating mechanism of the proposed plasmonic strain sensor was related to anisotropic fragments induced by cracks formed perpendicular to the direction of the applied strain. These anisotropic fragments were functionalized as optical modulators to change the reflectance depending on the applied strain. The sensing performance of the proposed plasmonic strain sensor was evaluated by using a PDMS sheet with a circular hole that produced nonuniform stress distributions. Finally, to evaluate the flexible and wearable performance of the proposed sensor, the optical detection of human motion was performed by detecting joint-related movements. The optical detection of human motion could be achieved because a change in motion (e.g., bending and stretching of the index finger) was reversibly associated with reflectance changes. Therefore, this study provides new insights into plasmon-based strain sensing for various applications in flexible instruments and human motion detection.
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Affiliation(s)
- Hiroaki Matsui
- Department of Bioengineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Department of Electrical Engineering and Information systems, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Akira Momose
- Kanagawa Institute of Industrial Science and Technology, 705-1, Shimoimaizumi, Ebina, Kanagawa 243-0435, Japan
| | - Hidehiko Yoda
- Department of Electrical and Electronic Engineering, Utsunomiya University, 7-1-2, Yo̅to̅, Utsunomiya, Tochigi 321-8585, Japan
| | - Aki Fujita
- Science & Technology Inst., Co., 3-5-4 Kojimachi, Chiyoda-ku, Tokyo 102-0083, Japan
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7
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Gabbani A, Sangregorio C, Tandon B, Nag A, Gurioli M, Pineider F. Magnetoplasmonics beyond Metals: Ultrahigh Sensing Performance in Transparent Conductive Oxide Nanocrystals. NANO LETTERS 2022; 22:9036-9044. [PMID: 36346871 PMCID: PMC9706655 DOI: 10.1021/acs.nanolett.2c03383] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/30/2022] [Indexed: 06/16/2023]
Abstract
Active modulation of the plasmonic response is at the forefront of today's research in nano-optics. For a fast and reversible modulation, external magnetic fields are among the most promising approaches. However, fundamental limitations of metals hamper the applicability of magnetoplasmonics in real-life active devices. While improved magnetic modulation is achievable using ferromagnetic or ferromagnetic-noble metal hybrid nanostructures, these suffer from severely broadened plasmonic response, ultimately decreasing their performance. Here we propose a paradigm shift in the choice of materials, demonstrating for the first time the outstanding magnetoplasmonic performance of transparent conductive oxide nanocrystals with plasmon resonance in the near-infrared. We report the highest magneto-optical response for a nonmagnetic plasmonic material employing F- and In-codoped CdO nanocrystals, due to the low carrier effective mass and the reduced plasmon line width. The performance of state-of-the-art ferromagnetic nanostructures in magnetoplasmonic refractometric sensing experiments are exceeded, challenging current best-in-class localized plasmon-based approaches.
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Affiliation(s)
- Alessio Gabbani
- INSTM
and Department of Chemistry and Industrial Chemistry, Università di Pisa, via G. Moruzzi 13, 56124Pisa, Italy
- Department
of Physics and Astronomy, Università
degli Studi di Firenze, via Sansone 1, 50019Sesto Fiorentino, FI, Italy
- CNR-ICCOM, Via Madonna
del Piano 10, 50019Sesto Fiorentino, FI, Italy
| | - Claudio Sangregorio
- CNR-ICCOM, Via Madonna
del Piano 10, 50019Sesto Fiorentino, FI, Italy
- INSTM
and Department of Chemistry “U. Schiff”, Università degli Studi di Firenze, via della Lastruccia 3, 50019Sesto Fiorentino, FI, Italy
| | - Bharat Tandon
- Department
of Chemistry, Indian Institute of Science
Education and Research (IISER), Pune411008, India
| | - Angshuman Nag
- Department
of Chemistry, Indian Institute of Science
Education and Research (IISER), Pune411008, India
| | - Massimo Gurioli
- Department
of Physics and Astronomy, Università
degli Studi di Firenze, via Sansone 1, 50019Sesto Fiorentino, FI, Italy
| | - Francesco Pineider
- INSTM
and Department of Chemistry and Industrial Chemistry, Università di Pisa, via G. Moruzzi 13, 56124Pisa, Italy
- Department
of Physics and Astronomy, Università
degli Studi di Firenze, via Sansone 1, 50019Sesto Fiorentino, FI, Italy
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8
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Bian K, Yang W, Xu Y, Zeng W, Wang H, Liang H, Cui T, Wang Z, Zhang B. Specific-Tuning Band Structure in Hetero-Semiconductor Nanorods to Match with Reduction of Oxygen Molecules for Low-Intensity Yet Highly Effective Sonodynamic/Hole Therapy of Tumors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2202921. [PMID: 35801484 DOI: 10.1002/smll.202202921] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/08/2022] [Indexed: 06/15/2023]
Abstract
Sonosensitizers-assisted sonodynamic therapy (SDT) has been emerging as a promising treatment for cancers, and yet few specific regulations of band structure of sonosensitizers have been reported in relation to oxygen in tissues. Herein, by a gradient doping technique to modulate the band structure of hetero-semiconductor nanorods, it is found that the reduction potential of band-edge is very critical to reactive oxygen species (ROS) production under low-intensity ultrasound (US) irradiation and particularly, when aligned with the reduction of oxygen, ROS generation is found to be most significantly enhanced. Withal, US-generated oxidation holes are found to be effective in consuming overexpressed glutathione in tumor lesions, which amplifies cellular oxidative stress and finally induces tumor cell death. Moreover, the intrinsic fluorescence property of semiconductors provides imaging capability to illumine tumor area and guide the SDT process. This study demonstrates that the reduction potential state of sonosensitizers is of crucial importance in ROS generation and the proposed reduction potential-tailored hetero-semiconductor nanorods materialize low-intensity US irradiation yet highly effective SDT and synergetic hole therapy of tumors with imaging guidance and reduced radiation injury.
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Affiliation(s)
- Kexin Bian
- Department of Medical Ultrasound, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
- The Institute for Biomedical Engineering & Nano Science, School of Medicine, Tongji University, 1239 Siping Road, Shanghai, 200092, China
- Shanghai Frontiers Science Center of Nanocatalytic Medicine, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Weitao Yang
- Department of Medical Ultrasound, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
- The Institute for Biomedical Engineering & Nano Science, School of Medicine, Tongji University, 1239 Siping Road, Shanghai, 200092, China
- Shanghai Frontiers Science Center of Nanocatalytic Medicine, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Yan Xu
- Department of Medical Ultrasound, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
- The Institute for Biomedical Engineering & Nano Science, School of Medicine, Tongji University, 1239 Siping Road, Shanghai, 200092, China
- Shanghai Frontiers Science Center of Nanocatalytic Medicine, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Weiwei Zeng
- Department of Medical Ultrasound, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
- The Institute for Biomedical Engineering & Nano Science, School of Medicine, Tongji University, 1239 Siping Road, Shanghai, 200092, China
- Shanghai Frontiers Science Center of Nanocatalytic Medicine, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Hui Wang
- Department of Medical Ultrasound, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
- The Institute for Biomedical Engineering & Nano Science, School of Medicine, Tongji University, 1239 Siping Road, Shanghai, 200092, China
- Shanghai Frontiers Science Center of Nanocatalytic Medicine, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Hongying Liang
- Department of Medical Ultrasound, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
- The Institute for Biomedical Engineering & Nano Science, School of Medicine, Tongji University, 1239 Siping Road, Shanghai, 200092, China
- Shanghai Frontiers Science Center of Nanocatalytic Medicine, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Tianming Cui
- Department of Medical Ultrasound, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
- The Institute for Biomedical Engineering & Nano Science, School of Medicine, Tongji University, 1239 Siping Road, Shanghai, 200092, China
- Shanghai Frontiers Science Center of Nanocatalytic Medicine, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Zhuo Wang
- Department of Medical Ultrasound, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
- The Institute for Biomedical Engineering & Nano Science, School of Medicine, Tongji University, 1239 Siping Road, Shanghai, 200092, China
- Shanghai Frontiers Science Center of Nanocatalytic Medicine, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Bingbo Zhang
- Department of Medical Ultrasound, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
- The Institute for Biomedical Engineering & Nano Science, School of Medicine, Tongji University, 1239 Siping Road, Shanghai, 200092, China
- Shanghai Frontiers Science Center of Nanocatalytic Medicine, Tongji University, 1239 Siping Road, Shanghai, 200092, China
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9
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Yin P, Chen S, Radovanovic PV. Properties of Free Charge Carriers Govern Exciton Polarization in Plasmonic Semiconductor Nanocrystals. J Phys Chem Lett 2022; 13:5545-5552. [PMID: 35695871 DOI: 10.1021/acs.jpclett.2c00857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Interaction between a plasmon, as a collective property of charge carriers, and electronic or spin states in complex nanostructures has emerged as one of the fascinating topics that intertwines the fields of photonics, optoelectronics, and spintronics. Here, we investigate the magneto-optical properties of plasmonic InN and Cu2-xSe nanocrystals and show that the complete exciton polarization induced by cyclotron motion of free carriers is a universal phenomenon in semiconductor nanocrystals. The selective exciton polarization is governed by the angular momentum transfer from the carriers following cyclotron orbits to the excited electronic band states and can be controlled by carrier type (electrons or holes), mass, and velocity. The results of this work demonstrate the free-carrier-induced control of the states around the Fermi level and the exciton polarization in technologically important III-V nanocrystals, allowing for new ways of tailoring quantum states for spintronic and optoelectronic applications.
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Affiliation(s)
- Penghui Yin
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Shuoyuan Chen
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Pavle V Radovanovic
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
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10
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Liu G, Lou Y, Zhao Y, Burda C. Directional Damping of Plasmons at Metal-Semiconductor Interfaces. Acc Chem Res 2022; 55:1845-1856. [PMID: 35696292 DOI: 10.1021/acs.accounts.2c00001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
ConspectusOver the past decade, it has been shown that surface plasmons can enhance photoelectric conversion in photovoltaics, photocatalysis, and other optoelectronic applications through their plasmonic absorption and damping processes. However, plasmonically enhanced devices have yet to routinely match or exceed the efficiencies of traditional semiconductor devices. The effect of plasmonic losses dissipates the absorbed photoenergy mostly into heat and that has hampered the realization of superior next-generation plasmonic optoelectronic devices. Several approaches are being explored to alleviate this situation, including using gain to compensate for the plasmonic losses, designing and synthesizing alternative low-loss plasmonic materials, and reducing activation barriers in plasmonic devices and physical thicknesses of photoabsorber layers to lower the plasmonic losses. A newly proposed plasmon-induced interfacial charge-transfer transition (PIICTT) mechanism has proven to be effective in minimizing energy loss during interfacial charge transfer. The PIICTT leads to a damping of metallic plasmonics by directly generating excitons at the plasmonic metal/semiconductor heteronanostructures. This novel concept has been proven to overcome some of the limitations of electron-transfer inefficiencies, renewing a focus on surface plasmon damping processes with the goal that the plasmonic excitation energies of metal nanoparticles can be more efficiently transferred to the adjacent semiconductor components in the absence and presence of an effective interlayer of carrier-selective blocking layer (CSBL). Several theoretical and experimental studies have concluded that efficient plasmon-induced ultrafast hot-carrier transfer was observed in plasmonic-metal/semiconductor heteronanostructures. The PIICTT mechanism may well be a general phenomenon at plasmonic metal/semiconductor, metal/molecule, semiconductor/semiconductor, and semiconductor/molecule heterointerfaces. Thus, the PIICTT presents a new opportunity to limit energy loss in plasmonic-metal nanostructures and increase device efficiencies based on plasmonic coupling. The nonradiative damping of surface plasmons can impact the energy flux direction and thereby provide a new process beyond light trapping, focusing, and hot carrier creation.In this Account, we draw much attention to the benefits of interfacial plasmonic coupling, highlighting recent pioneering discoveries in which plasmon-induced interfacial charge- and energy-transfer processes enable the generation of hot charge carriers near the plasmonic-metal/semiconductor interfaces. This process is likely to increase the photoelectric conversion efficiency, constituting "plasmonic enhancement". We also discuss recent advances in the dynamics of surface plasmon relaxation and highlight exciting new possibilities for plasmonic metals and their interactions with strongly attached semiconductors to provide directional energy fluxes. While this new research area comes on the heels of much elaborate research on both metal and semiconductor nanomaterials, it provides a subtle but important refinement in understanding the optoelectronic properties of materials with far-reaching consequences from fundamental interface science to technological applications. We hope that this Account will contribute to a more systematic description of interface-coupled plasmonics, both fundamentally and in terms of applications toward the design of plasmonic heterostructured devices.
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Affiliation(s)
- Guoning Liu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China.,School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Yongbing Lou
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China
| | - Yixin Zhao
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Clemens Burda
- Department of Chemistry, Millis Science Center, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, United States
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11
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Lin JX, Chen YR, Sun SJ, Hu CK, Chen BJ, Hsu HS. Field-Free Magnetoplasmon-Induced Ultraviolet Circular Dichroism Switching in Premagnetized Magnetic Nanowires. ACS APPLIED MATERIALS & INTERFACES 2022; 14:11895-11902. [PMID: 35191691 DOI: 10.1021/acsami.1c23505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Broadband modulation of magnetic circular dichroism (MCD) using a relatively low magnetic field or by producing a field-free magnetoplasmonic effect in the remnant magnetic state was achieved by the integration of the noble metals (NMs) Au and Ag and the perpendicular magnetic anisotropy of Co with ZnO nanowires (NWs) used as the template. The samples containing NMs revealed MCD sign reversals and enhancements when compared with the original Co/ZnO NWs. The magnetoplasmonic effect of Au close to the visible light spectrum could induce the CD change in the visible region. Notably, the ultraviolet (UV) CD in Ag/Co/ZnO NWs is 12.5 times larger under a magnetic field (∼0.2 T) and 10 times greater in the remnant state (field-free) than those of the original Co/ZnO NWs because of the magnetoplasmonic effect of Ag in the UV spectrum. These results are attributable to the coupling of the remnant magnetic state of Co magnetization, the magnetoplasmons of the NMs, and the excitons of the ZnO NWs. The findings are potentially applicable in magneto-optical recording, biosensing, and energy contexts involving magnetoplasmonic functionalization.
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Affiliation(s)
- Jun-Xiao Lin
- Department of Applied Physics, National Pingtung University, 4-18, Minsheng Road, Pingtung 90044, Taiwan, ROC
| | - Yu-Ren Chen
- Department of Applied Physics, National Pingtung University, 4-18, Minsheng Road, Pingtung 90044, Taiwan, ROC
| | - Shih-Jye Sun
- Department of Applied Physics, National University of Kaohsiung, 700, Kaohsiung University Road, Kaohsiung 81148, Taiwan, ROC
| | - Chun-Kai Hu
- Department of Applied Physics, National Pingtung University, 4-18, Minsheng Road, Pingtung 90044, Taiwan, ROC
| | - Bo-Jun Chen
- Department of Applied Physics, National Pingtung University, 4-18, Minsheng Road, Pingtung 90044, Taiwan, ROC
| | - Hua-Shu Hsu
- Department of Applied Physics, National Pingtung University, 4-18, Minsheng Road, Pingtung 90044, Taiwan, ROC
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12
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Wang L, Zare D, Chow TH, Wang J, Magnozzi M, Chergui M. Disentangling Light- and Temperature-Induced Thermal Effects in Colloidal Au Nanoparticles. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2022; 126:3591-3599. [PMID: 35242272 PMCID: PMC8883463 DOI: 10.1021/acs.jpcc.1c10747] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/31/2022] [Indexed: 06/02/2023]
Abstract
We present temperature-dependent (from room temperature to 80 °C) absorption spectra of Au/SiO2 core-shell nanoparticles (NPs) (core diameter: ∼25 nm) in water in the range from 1.5 to 4.5 eV, which spans the localized surface plasmon resonance (LSPR) and the interband transitions. A decrease in absorption with temperature over the entire spectral range is observed, which is more prominent at the LSPR. These changes are well reproduced by theoretical calculations of the absorption spectra, based on the experimentally measured temperature-dependent real (ε1) and imaginary (ε2) parts of the dielectric constant of Au NPs and of the surrounding medium. In addition, we model the photoinduced response of the NPs over the entire spectral range. The experimental and theoretical results of the thermal heating and the simulations of the photoinduced heating are compared with the ultrafast photoinduced transient absorption (TA) spectra upon excitation of the LSPR. These show that while the latter is a reliable monitor of heating of the NP and its environment, the interband region mildly responds to heating but predominantly to the population evolution of charge carriers.
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Affiliation(s)
- Lijie Wang
- Laboratory
of Ultrafast Spectroscopy, ISIC and Lausanne Centre for Ultrafast
Science (LACUS), École Polytechnique
Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Davood Zare
- Laboratory
of Ultrafast Spectroscopy, ISIC and Lausanne Centre for Ultrafast
Science (LACUS), École Polytechnique
Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Tsz Him Chow
- Department
of Physics, The Chinese University of Hong
Kong, 999077 Shatin, Hong Kong SAR, China
| | - Jianfang Wang
- Department
of Physics, The Chinese University of Hong
Kong, 999077 Shatin, Hong Kong SAR, China
| | - Michele Magnozzi
- OptMatLab,
Dipartimento di Fisica, Università
di Genova, via Dodecaneso
33, I-16146 Genova, Italy
| | - Majed Chergui
- Laboratory
of Ultrafast Spectroscopy, ISIC and Lausanne Centre for Ultrafast
Science (LACUS), École Polytechnique
Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
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13
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14
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Araujo JJ, Brozek CK, Liu H, Merkulova A, Li X, Gamelin DR. Tunable Band-Edge Potentials and Charge Storage in Colloidal Tin-Doped Indium Oxide (ITO) Nanocrystals. ACS NANO 2021; 15:14116-14124. [PMID: 34387483 DOI: 10.1021/acsnano.1c04660] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Degenerately doped metal-oxide nanocrystals (NCs) show localized surface plasmon resonances (LSPRs) that are tunable via their tunable excess charge-carrier densities. Modulation of excess charge carriers has also been used to control magnetism in colloidal doped metal-oxide NCs. The addition of excess delocalized conduction-band (CB) electrons can be achieved through aliovalent doping or by postsynthetic techniques such as electrochemistry or photodoping. Here, we examine the influence of charge-compensating aliovalent dopants on the potentials of excess CB electrons in free-standing colloidal degenerately doped oxide NCs, both experimentally and through modeling. Taking Sn4+:In2O3 (ITO) NCs as a model system, we use spectroelectrochemical techniques to examine differences between aliovalent doping and photodoping. We demonstrate that whereas photodoping introduces excess CB electrons by raising the Fermi level relative to the CB edge, aliovalent impurity substitution introduces excess CB electrons by stabilizing the CB edge relative to an externally defined Fermi level. Significant differences are thus observed electrochemically between spectroscopically similar delocalized CB electrons compensated by aliovalent dopants and those compensated by surface cations (e.g., protons) during photodoping. Theoretical modeling illustrates the very different potentials that arise from charge compensation via aliovalent substitution and surface charge compensation. Spectroelectrochemical titrations allow the ITO NC band-edge stabilization as a function of Sn4+ doping to be quantified. Extremely large capacitances are observed in both In2O3 and ITO NCs, making these NCs attractive for reversible charge-storage applications.
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Affiliation(s)
- Jose J Araujo
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Carl K Brozek
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Hongbin Liu
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Anna Merkulova
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Xiaosong Li
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Daniel R Gamelin
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
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15
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Bai T, Ai J, Liao L, Luo J, Song C, Duan Y, Han L, Che S. Chiral Mesostructured NiO Films with Spin Polarisation. Angew Chem Int Ed Engl 2021; 60:9421-9426. [PMID: 33554464 DOI: 10.1002/anie.202101069] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Indexed: 12/17/2022]
Abstract
Spin polarisation is found in the centrosymmetric nonferromagnetic crystals, chiral mesostructured NiO films (CMNFs), fabricated through the symmetry-breaking effect of a chiral molecule. Two levels of chirality were identified: primary nanoflakes with atomically twisted crystal lattices and secondary helical stacking of the nanoflakes. Spin polarisation of the CMNFs was confirmed by chirality-dependent magnetic-tip conducting atomic force microscopy (mc-AFM) and magnetic field-independent magnetic circular dichroism (MCD). Electron transfer in the symmetry-breaking electric field was speculated to create chirality-dependent effective magnetic fields. The asymmetric spin-orbit coupling (SOC) generated by effective magnetic fields selectively modifies the opposite spin motion in the antipodal CMNFs. Our findings provide fundamental insights for directional spin control in unprecedented functional inorganic materials.
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Affiliation(s)
- Te Bai
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P.R. China
| | - Jing Ai
- School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, P. R. China
| | - Liyang Liao
- Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Junwei Luo
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, P.R. China
| | - Cheng Song
- Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Yingying Duan
- School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, P. R. China
| | - Lu Han
- School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, P. R. China
| | - Shunai Che
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P.R. China.,School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, P. R. China
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16
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Bai T, Ai J, Liao L, Luo J, Song C, Duan Y, Han L, Che S. Chiral Mesostructured NiO Films with Spin Polarisation. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202101069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Te Bai
- School of Chemistry and Chemical Engineering State Key Laboratory of Metal Matrix Composites Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P.R. China
| | - Jing Ai
- School of Chemical Science and Engineering Tongji University 1239 Siping Road Shanghai 200092 P. R. China
| | - Liyang Liao
- Laboratory of Advanced Materials (MOE) School of Materials Science and Engineering Tsinghua University Beijing 100084 P. R. China
| | - Junwei Luo
- State Key Laboratory of Superlattices and Microstructures Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 P.R. China
| | - Cheng Song
- Laboratory of Advanced Materials (MOE) School of Materials Science and Engineering Tsinghua University Beijing 100084 P. R. China
| | - Yingying Duan
- School of Chemical Science and Engineering Tongji University 1239 Siping Road Shanghai 200092 P. R. China
| | - Lu Han
- School of Chemical Science and Engineering Tongji University 1239 Siping Road Shanghai 200092 P. R. China
| | - Shunai Che
- School of Chemistry and Chemical Engineering State Key Laboratory of Metal Matrix Composites Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P.R. China
- School of Chemical Science and Engineering Tongji University 1239 Siping Road Shanghai 200092 P. R. China
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17
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Chen TP, Lin JX, Lin CC, Lin CY, Ke WC, Wang DY, Hsu HS, Chen CC, Chen CW. Strong Excitonic Magneto-Optic Effects in Two-Dimensional Organic-Inorganic Hybrid Perovskites. ACS APPLIED MATERIALS & INTERFACES 2021; 13:10279-10286. [PMID: 33599486 DOI: 10.1021/acsami.0c20863] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
This work demonstrates the strong excitonic magneto-optic (MO) effects of magnetic circular dichroism (MCD) and Faraday rotation (FR) in nonmagnetic two-dimensional (2D) organic-inorganic hybrid Ruddlesden-Popper perovskites (RPPs) at room temperature. Due to their strong and sharp excitonic absorption as a result of unique quantum well structures of 2D RPPs, sizeable linear excitonic MO effects of MCD and FR can be observed at room temperature under a low magnetic field (<1 T) compared with their three-dimensional counterpart. In addition, since the band gaps of 2D organic-inorganic hybrid perovskites can be manipulated either by changing the number n of inorganic octahedral slabs per unit cell or through halide engineering, linear excitonic MO effects of 2D-RPPs can be observed through the broadband spectral ranges of visible light. Our result may pave the way for the promising research field of MO and magneto-optoelectronic applications based on 2D organic-inorganic hybrid perovskites with facile solution processes.
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Affiliation(s)
- Tzu-Pei Chen
- Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan
- Department of Physics, National Taiwan University, Taipei 106, Taiwan
- Nano Science and Technology Program, Taiwan International Graduate Program, Academia Sinica and National Taiwan University, Taipei 115, Taiwan
| | - Jun-Xiao Lin
- Department of Applied Physics, National Pingtung University, Pingtung 900, Taiwan
| | - Cheng-Chieh Lin
- International Graduate Program of Molecular Science and Technology, National Taiwan University (NTU-MST), Taipei 106, Taiwan
- Molecular Science and Technology Program, Taiwan International Graduate Program (TIGP) Academia Sinica, Taipei 11529, Taiwan
| | - Chi-Ying Lin
- Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan
| | - We-Chen Ke
- Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan
| | - Di-Yan Wang
- Department of Chemistry, Tunghai University, Taichung 407, Taiwan
| | - Hua-Shu Hsu
- Department of Applied Physics, National Pingtung University, Pingtung 900, Taiwan
| | - Chia-Chun Chen
- Department of Chemistry, National Taiwan Normal University, Taipei 116, Taiwan
| | - Chun-Wei Chen
- Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan
- International Graduate Program of Molecular Science and Technology, National Taiwan University (NTU-MST), Taipei 106, Taiwan
- Center of Atomic Initiative for New Materials (AI-MAT), National Taiwan University, Taipei 106, Taiwan
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18
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Li C, Hsu SC, Lin JX, Chen JY, Chuang KC, Chang YP, Hsu HS, Chen CH, Lin TS, Liu YH. Giant Zeeman Splitting for Monolayer Nanosheets at Room Temperature. J Am Chem Soc 2020; 142:20616-20623. [PMID: 33249824 DOI: 10.1021/jacs.0c05368] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Giant Zeeman splitting and zero-field splitting (ZFS) are observed in 2D nanosheets that have monolayers of atomic thickness. In this study, single-crystalline CdSe(ethylenediamine)0.5 and Mn2+-doped nanosheets are synthesized via a solvothermal process. Tunable amounts of Mn2+(0.5-8.0%) are introduced, resulting in lattice contraction as well as phosphorescence from five unpaired electrons. The exciton dynamics are dominated by spin-related electronic transitions (4T1 → 6A1) with long lifetimes (20.5, 132, and 295 μs). Temperature-varied EPR spectroscopy with spectral simulation reveals large ZFS (D = 3850 MHz) due to axial distortion of substituted Mn2+ (S = 5/2). In the magnetic circular dichroism (MCD) measurements, we observed giant Zeeman splitting with large effective g values (up to 231 ± 21), which implies huge sp-d exchange interactions in 2D monolayer regimes, leading to diluted magnetic semiconductor (DMS) materials.
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Affiliation(s)
- Chi Li
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan, ROC
| | - Sheng-Chih Hsu
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan, ROC
| | - Jun-Xiao Lin
- Department of Applied Physics, National Pingtung University, Pingtung 90003, Taiwan, ROC
| | - Jou-Yun Chen
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan, ROC
| | - Kai-Chun Chuang
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan, ROC
| | - Yuan-Pin Chang
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan, ROC
| | - Hua-Shu Hsu
- Department of Applied Physics, National Pingtung University, Pingtung 90003, Taiwan, ROC
| | - Ching-Hsiang Chen
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science & Technology, Taipei 10673, Taiwan, ROC
| | - Tien-Sung Lin
- Department of Chemistry, Washington University, Saint Louis, Missouri 63130, United States
| | - Yi-Hsin Liu
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan, ROC
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19
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Yin P, Radovanovic PV. Magnetoplasmon Resonances in Semiconductor Nanocrystals: Potential for a New Information Technology Platform. CHEMSUSCHEM 2020; 13:4885-4893. [PMID: 32681689 DOI: 10.1002/cssc.202001468] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Indexed: 06/11/2023]
Abstract
Interaction between light and plasmon oscillations in semiconductor nanocrystals has received significant attention in recent years driven, in part, by the possibility of coupling between plasmonic and semiconducting properties. Such coupling could lead to a variety of new applications in plasmonics, photonics, and optoelectronics. In this Concept we discuss the methods for generation of localized surface plasmon resonances in colloidal semiconductor nanocrystals and their unique magneto-optical properties. Different means of introducing free charge carriers, including aliovalent doping, non-stoichiometry, and external charging, are first compared and contrasted. The resulting plasmons can be manipulated using circularly polarized light and external magnetic field, allowing for the formation of the magnetoplasmon modes. The concept of using these magnetoplasmon modes as a new degree of freedom for controlling excitonic states and charge-carrier polarization is introduced and discussed. We also highlight some notable recent examples of controlling plasmon-exciton interactions and comment on their implications for future research in sustainable information technology.
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Affiliation(s)
- Penghui Yin
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada
| | - Pavle V Radovanovic
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada
- Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada
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20
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Characterisation and Manipulation of Polarisation Response in Plasmonic and Magneto-Plasmonic Nanostructures and Metamaterials. Symmetry (Basel) 2020. [DOI: 10.3390/sym12081365] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Optical properties of metal nanostructures, governed by the so-called localised surface plasmon resonance (LSPR) effects, have invoked intensive investigations in recent times owing to their fundamental nature and potential applications. LSPR scattering from metal nanostructures is expected to show the symmetry of the oscillation mode and the particle shape. Therefore, information on the polarisation properties of the LSPR scattering is crucial for identifying different oscillation modes within one particle and to distinguish differently shaped particles within one sample. On the contrary, the polarisation state of light itself can be arbitrarily manipulated by the inverse designed sample, known as metamaterials. Apart from polarisation state, external stimulus, e.g., magnetic field also controls the LSPR scattering from plasmonic nanostructures, giving rise to a new field of magneto-plasmonics. In this review, we pay special attention to polarisation and its effect in three contrasting aspects. First, tailoring between LSPR scattering and symmetry of plasmonic nanostructures, secondly, manipulating polarisation state through metamaterials and lastly, polarisation modulation in magneto-plasmonics. Finally, we will review recent progress in applications of plasmonic and magneto-plasmonic nanostructures and metamaterials in various fields.
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21
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Zhang S, Hao M, Gao W, Liu F, Duan J, Kong Y, Liu D, Liu H. Neuron-like cell differentiation of hADSCs promoted by a copper sulfide nanostructure mediated plasmonic effect driven by near-infrared light. NANOSCALE 2020; 12:9833-9841. [PMID: 32342083 DOI: 10.1039/d0nr02319a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Nerve tissues are one of the most difficult tissues to repair due to the limited source of neural stem cells and the difficulty in promoting the neural differentiation of mesenchymal stem cells by growth factors. Electromagnetic field has been proved to have the ability to regulate stem cell differentiation. Although some research studies promoted the neural differentiation of stem cells using an external power source, it is still a big challenge to realize nerve repair in bodies because of the unwieldiness and complexity of the power supply equipment. Surface plasmons (SP) are electromagnetic oscillations caused by the interaction of free electrons and photons on a metal surface, and almost no one has used these localized electromagnetic oscillations to regulate stem cell differentiation. In this study, based on the concept proposed by our group that "the stem cell fate can be regulated by nanostructure mediated physical signals", the localized electromagnetic oscillation generated by the localized surface plasmon resonance (LSPR) of copper sulfide (CuS) nanostructures irradiated with near-infrared light has been proved to have positive regulation on stem cell maturation and neuron-like cell differentiation of human adipose-derived stem cells (hADSCs). This regulation method avoids the use of wire connection of an external power source, which realizes the stem cell fate regulation by an external field. In addition, this work demonstrated that it is promising to realize the light promoted nerve repair in bodies by using an implantable plasmonic nanomaterial with absorption in the near-infrared region within a human "optical window", which has important academic value and application prospect. As we know, this is the first time to use semiconductor nanostructures as a medium to regulate stem cell neuron-like cell differentiation by near-infrared light and the LSPR of a plasmonic nanomaterial, which will have great influence on biomedical engineering and attract broad attention from nanomaterials scientists, neurobiologists, and neurosurgeons.
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Affiliation(s)
- Shan Zhang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China.
| | - Min Hao
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China.
| | - Wenqiang Gao
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China.
| | - Feng Liu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China.
| | - Jiazhi Duan
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China.
| | - Ying Kong
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China.
| | - Duo Liu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China.
| | - Hong Liu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China. and Institute for Advanced Interdisciplinary Research, Jinan University, 250022, China
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22
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Kendall O, Wainer P, Barrow S, van Embden J, Della Gaspera E. Fluorine-Doped Tin Oxide Colloidal Nanocrystals. NANOMATERIALS 2020; 10:nano10050863. [PMID: 32365771 PMCID: PMC7712819 DOI: 10.3390/nano10050863] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 04/15/2020] [Accepted: 04/19/2020] [Indexed: 12/12/2022]
Abstract
Fluorine-doped tin oxide (FTO) is one of the most studied and established materials for transparent electrode applications. However, the syntheses for FTO nanocrystals are currently very limited, especially for stable and well-dispersed colloids. Here, we present the synthesis and detailed characterization of FTO nanocrystals using a colloidal heat-up reaction. High-quality SnO2 quantum dots are synthesized with a tuneable fluorine amount up to ~10% atomic, and their structural, morphological and optical properties are fully characterized. These colloids show composition-dependent optical properties, including the rise of a dopant-induced surface plasmon resonance in the near infrared.
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23
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Li P, Zhu L, Ma C, Zhang L, Guo L, Liu Y, Ma H, Zhao B. Plasmonic Molybdenum Tungsten Oxide Hybrid with Surface-Enhanced Raman Scattering Comparable to that of Noble Metals. ACS APPLIED MATERIALS & INTERFACES 2020; 12:19153-19160. [PMID: 32233413 DOI: 10.1021/acsami.0c00220] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The surface-enhanced Raman scattering (SERS) research is in full swing owing to its high sensitivity and high selectivity; however, the substrates with superexcellent performance for SERS are largely confined to noble metals (Au, Ag, etc.). Although the SERS active substrates have been extended to semiconductors and transition metals, it is frustrating that their sensitivities are insufficient for widespread practical application. Here, we report the plasmonic molybdenum tungsten oxide (MWO) hybrid nanomaterials (NMs), which can be used as high-performance substrates with SERS comparable to that of noble metals. MWO NMs can achieve the trace detection of rhodamine 6G (R6G), basic fuchsin (BF), and oil red O (ORO). The detection limit concentration for R6G is 10-8 M, with the maximum enhancement factor of up to 6.09 × 107. The superexcellent SERS performance was attributed to the cooperative enhancement effect of electromagnetic (EM) enhancement mechanism and the charge transfer (CT) mechanism. Moreover, in the proposed system, the EM and CT contribution was distinguished by employing poly(vinylpyrrolidone) (PVP), which serves as a barrier layer to prevent the CT process from MWO NMs to R6G. These remarkable MWO NMs can be obtained with a facile method, and this research provides new insight into non-noble metal based SERS substrate.
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Affiliation(s)
- Peng Li
- Stake Key Laboratory of Supramolecular Structure and Materials, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Lin Zhu
- Stake Key Laboratory of Supramolecular Structure and Materials, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Chao Ma
- Stake Key Laboratory of Supramolecular Structure and Materials, Jilin University, 2699 Qianjin Street, Changchun 130012, China
- Institute of Theoretical Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130023, China
| | - Lixia Zhang
- Stake Key Laboratory of Supramolecular Structure and Materials, Jilin University, 2699 Qianjin Street, Changchun 130012, China
- Institute of Theoretical Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130023, China
| | - Lin Guo
- Stake Key Laboratory of Supramolecular Structure and Materials, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Yawen Liu
- Stake Key Laboratory of Supramolecular Structure and Materials, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Hao Ma
- Stake Key Laboratory of Supramolecular Structure and Materials, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Bing Zhao
- Stake Key Laboratory of Supramolecular Structure and Materials, Jilin University, 2699 Qianjin Street, Changchun 130012, China
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24
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Zhuang TT, Li Y, Gao X, Wei M, García de Arquer FP, Todorović P, Tian J, Li G, Zhang C, Li X, Dong L, Song Y, Lu Y, Yang X, Zhang L, Fan F, Kelley SO, Yu SH, Tang Z, Sargent EH. Regioselective magnetization in semiconducting nanorods. NATURE NANOTECHNOLOGY 2020; 15:192-197. [PMID: 31959929 DOI: 10.1038/s41565-019-0606-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 12/02/2019] [Indexed: 05/21/2023]
Abstract
Chirality-the property of an object wherein it is distinguishable from its mirror image-is of widespread interest in chemistry and biology1-6. Regioselective magnetization of one-dimensional semiconductors enables anisotropic magnetism at room temperature, as well as the manipulation of spin polarization-the properties essential for spintronics and quantum computing technology7. To enable oriented magneto-optical functionalities, the growth of magnetic units has to be achieved at targeted locations on a parent nanorod. However, this challenge is yet to be addressed in the case of materials with a large lattice mismatch. Here, we report the regioselective magnetization of nanorods independent of lattice mismatch via buffer intermediate catalytic layers that modify interfacial energetics and promote regioselective growth of otherwise incompatible materials. Using this strategy, we combine materials with distinct lattices, chemical compositions and magnetic properties, that is, a magnetic component (Fe3O4) and a series of semiconducting nanorods absorbing across the ultraviolet and visible spectrum at specific locations. The resulting heteronanorods exhibit optical activity as induced by the location-specific magnetic field. The regioselective magnetization strategy presented here enables a path to designing optically active nanomaterials for chirality and spintronics.
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Affiliation(s)
- Tao-Tao Zhuang
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, CAS Center for Excellence in Nanoscience, Institute of Biomimetic Materials & Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, China
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Yi Li
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, CAS Center for Excellence in Nanoscience, Institute of Biomimetic Materials & Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, China
| | - Xiaoqing Gao
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
- College of Physics and Optoelectronic Engineering, Shenzhen University, Guangdong, China
| | - Mingyang Wei
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
| | | | - Petar Todorović
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Jie Tian
- Engineering and Materials Science Experiment Center, University of Science and Technology of China, Hefei, China
| | - Gongpu Li
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, CAS Center for Excellence in Nanoscience, Institute of Biomimetic Materials & Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, China
| | - Chong Zhang
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, CAS Center for Excellence in Nanoscience, Institute of Biomimetic Materials & Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, China
| | - Xiyan Li
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Liang Dong
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, CAS Center for Excellence in Nanoscience, Institute of Biomimetic Materials & Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, China
| | - Yonghong Song
- School of Biological and Medical Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, China
| | - Yang Lu
- School of Biological and Medical Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, China
| | - Xuekang Yang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
| | - Libing Zhang
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Fengjia Fan
- CAS Key Laboratory of Microscale Magnetic Resonance and Department of Modern Physics, University of Science and Technology of China, Hefei, China
| | - Shana O Kelley
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada
| | - Shu-Hong Yu
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, CAS Center for Excellence in Nanoscience, Institute of Biomimetic Materials & Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, China.
| | - Zhiyong Tang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China.
| | - Edward H Sargent
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada.
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25
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Yin H, Kuwahara Y, Mori K, Louis C, Yamashita H. Properties, fabrication and applications of plasmonic semiconductor nanocrystals. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02511a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We highlight three widely explored oxide-based plasmonic materials, including HxMoO3−y, HxWO3−y, and MoxW1−xO3−y, and their applications in catalysis.
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Affiliation(s)
- Haibo Yin
- Division of Materials and Manufacturing Science
- Graduate School of Engineering
- Osaka University
- Osaka
- Japan
| | - Yasutaka Kuwahara
- Division of Materials and Manufacturing Science
- Graduate School of Engineering
- Osaka University
- Osaka
- Japan
| | - Kohsuke Mori
- Division of Materials and Manufacturing Science
- Graduate School of Engineering
- Osaka University
- Osaka
- Japan
| | - Catherine Louis
- Sorbonne Universités
- UPMC Univ Paris 06, UMR CNRS 7197
- Laboratoire de Réactivité de Surface
- F-75252 Paris
- France
| | - Hiromi Yamashita
- Division of Materials and Manufacturing Science
- Graduate School of Engineering
- Osaka University
- Osaka
- Japan
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26
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Yin P, Hegde M, Garnet NS, Tan Y, Radovanovic PV. Faceting-Controlled Zeeman Splitting in Plasmonic TiO 2 Nanocrystals. NANO LETTERS 2019; 19:6695-6702. [PMID: 31448925 DOI: 10.1021/acs.nanolett.9b03128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Dynamic manipulation of discrete states in nanostructured materials is critical for emerging quantum technologies. However, this process often requires a correlation of mutually competing degrees of freedom. Here we report the control of magnetic-field-induced excitonic splitting in colloidal TiO2 nanocrystals by control of their faceting. By changing nanocrystal morphology via reaction conditions, we control the concentration and location of oxygen vacancies, which can generate localized surface plasmon resonance and foster the reduction of lattice cations leading to the emergence of individual or exchange-coupled Ti(III) centers with high net-spin states. These species can all couple with the nanocrystal lattice under different conditions resulting in distinctly patterned excitonic Zeeman splitting and selective control of conduction band states in an external magnetic field. This work demonstrates the concept of using nanocrystal morphology to control carrier polarization in individual nanocrystals using both intrinsic and collective electronic properties, representing a unique approach to multifunctionality in reduced dimensions.
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Affiliation(s)
- Penghui Yin
- Department of Chemistry , University of Waterloo , 200 University Avenue West , Waterloo , Ontairo N2L 3G1 , Canada
| | - Manu Hegde
- Department of Chemistry , University of Waterloo , 200 University Avenue West , Waterloo , Ontairo N2L 3G1 , Canada
| | - Natalie S Garnet
- Department of Chemistry , University of Waterloo , 200 University Avenue West , Waterloo , Ontairo N2L 3G1 , Canada
| | - Yi Tan
- Department of Chemistry , University of Waterloo , 200 University Avenue West , Waterloo , Ontairo N2L 3G1 , Canada
| | - Pavle V Radovanovic
- Department of Chemistry , University of Waterloo , 200 University Avenue West , Waterloo , Ontairo N2L 3G1 , Canada
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27
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Yin P, Hegde M, Tan Y, Chen S, Garnet N, Radovanovic PV. Controlling the Mechanism of Excitonic Splitting in In 2O 3 Nanocrystals by Carrier Delocalization. ACS NANO 2018; 12:11211-11218. [PMID: 30335948 DOI: 10.1021/acsnano.8b05782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Degenerately doped metal oxide nanocrystals have emerged as infrared plasmonic materials with promising applications in optoelectronics, surface-enhanced infrared spectroscopies, and sensing. They also have potential for technological applications in electronics and photonics owing to the possibility of coupling between plasmon and exciton in the absence of a heterojunction. Here, we demonstrate the control of excitonic splitting in In2O3 nanocrystals upon excitation with circularly polarized light in an external magnetic field by simultaneous control of the electronic structure of donor defects and the nanocrystal host lattice. Using variable-temperature-variable-field magnetic circular dichroism spectroscopy, we show that the nanocrystal band splitting has two distinct contributions in plasmonic In2O3 nanocrystals. Temperature-independent splitting arises from the cyclotron magnetoplasmonic modes, which impart angular momentum to the conduction band excited states near the Fermi level, and increases with the intensity of the corresponding plasmon resonance. Temperature-dependent splitting is associated with the localized electron spins trapped in defect states. The ratio of the two components can be controlled by the formation of oxygen vacancies or introduction of aliovalent dopants. Using these experimental results in conjunction with the density functional theory modeling, relative contribution of the two mechanisms is discussed in the context of the perturbation theory taking into account energy separation between the nanocrystal excited states and the localized defect states. The results of this work demonstrate the ability to control carrier polarization in nonmagnetic metal oxide nanocrystals using both individual and collective electronic properties and allow for their application as an emerging class of multifunctional materials with strongly interacting degrees of freedom.
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Affiliation(s)
- Penghui Yin
- Department of Chemistry , University of Waterloo , 200 University Avenue West , Waterloo , Ontario N2L 3G1 , Canada
| | - Manu Hegde
- Department of Chemistry , University of Waterloo , 200 University Avenue West , Waterloo , Ontario N2L 3G1 , Canada
| | - Yi Tan
- Department of Chemistry , University of Waterloo , 200 University Avenue West , Waterloo , Ontario N2L 3G1 , Canada
| | - Shuoyuan Chen
- Department of Chemistry , University of Waterloo , 200 University Avenue West , Waterloo , Ontario N2L 3G1 , Canada
| | - Natalie Garnet
- Department of Chemistry , University of Waterloo , 200 University Avenue West , Waterloo , Ontario N2L 3G1 , Canada
| | - Pavle V Radovanovic
- Department of Chemistry , University of Waterloo , 200 University Avenue West , Waterloo , Ontario N2L 3G1 , Canada
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28
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Li Y, Cheng J, Li J, Zhu X, He T, Chen R, Tang Z. Tunable Chiroptical Properties from the Plasmonic Band to Metal-Ligand Charge Transfer Band of Cysteine-Capped Molybdenum Oxide Nanoparticles. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806093] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Yiwen Li
- Department of Electrical and Electronic Engineering; Southern University of Science and Technology; Shenzhen 518055 P. R. China
- The Institute of Applied Physics and Materials Engineering; University of Macau; Avenida da Universidade Taipa Macau
| | - Jiaji Cheng
- College of Physics and Energy; Shenzhen University; Shenzhen 518060 P. R. China
| | - Jiagen Li
- School of Science and Engineering; The Chinese University of Hong Kong; Shenzhen P. R. China
| | - Xi Zhu
- School of Science and Engineering; The Chinese University of Hong Kong; Shenzhen P. R. China
| | - Tingchao He
- College of Physics and Energy; Shenzhen University; Shenzhen 518060 P. R. China
| | - Rui Chen
- Department of Electrical and Electronic Engineering; Southern University of Science and Technology; Shenzhen 518055 P. R. China
| | - Zikang Tang
- The Institute of Applied Physics and Materials Engineering; University of Macau; Avenida da Universidade Taipa Macau
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29
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Li Y, Cheng J, Li J, Zhu X, He T, Chen R, Tang Z. Tunable Chiroptical Properties from the Plasmonic Band to Metal-Ligand Charge Transfer Band of Cysteine-Capped Molybdenum Oxide Nanoparticles. Angew Chem Int Ed Engl 2018; 57:10236-10240. [DOI: 10.1002/anie.201806093] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 06/21/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Yiwen Li
- Department of Electrical and Electronic Engineering; Southern University of Science and Technology; Shenzhen 518055 P. R. China
- The Institute of Applied Physics and Materials Engineering; University of Macau; Avenida da Universidade Taipa Macau
| | - Jiaji Cheng
- College of Physics and Energy; Shenzhen University; Shenzhen 518060 P. R. China
| | - Jiagen Li
- School of Science and Engineering; The Chinese University of Hong Kong; Shenzhen P. R. China
| | - Xi Zhu
- School of Science and Engineering; The Chinese University of Hong Kong; Shenzhen P. R. China
| | - Tingchao He
- College of Physics and Energy; Shenzhen University; Shenzhen 518060 P. R. China
| | - Rui Chen
- Department of Electrical and Electronic Engineering; Southern University of Science and Technology; Shenzhen 518055 P. R. China
| | - Zikang Tang
- The Institute of Applied Physics and Materials Engineering; University of Macau; Avenida da Universidade Taipa Macau
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30
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Kapaklis V. Magnetizing semiconductors with light. NATURE NANOTECHNOLOGY 2018; 13:438-439. [PMID: 29686290 DOI: 10.1038/s41565-018-0119-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- Vassilios Kapaklis
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden.
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31
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Synthesis and characterization of polyaniline–zirconium dioxide and polyaniline–cerium dioxide composites with enhanced photocatalytic degradation of rhodamine B dye. CHEMICAL PAPERS 2018. [DOI: 10.1007/s11696-018-0494-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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