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Huang S, Huang G. The utilization of quantum dot labeling as a burgeoning technique in the field of biological imaging. RSC Adv 2024; 14:20884-20897. [PMID: 38957578 PMCID: PMC11217725 DOI: 10.1039/d4ra04402a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2024] [Accepted: 06/27/2024] [Indexed: 07/04/2024] Open
Abstract
Quantum dots (QDs), with their unique optical and physical properties, have revolutionized the field of biological imaging, providing researchers with tools to explore cellular processes and molecular interactions in unprecedented detail. This review explores the diverse properties of QDs, emphasizing their application in biological imaging and addressing both their advantages and challenges. We discuss the developments in QD technology that have facilitated their integration into bioimaging, highlighting the role of surface modifications in enhancing their biocompatibility and functionality. The varied applications of QDs in both in vitro and in vivo imaging settings are examined, showcasing their capacity to deliver brighter, more stable, and multiplexed imaging solutions compared to traditional fluorescent dyes. Furthermore, we delve into the challenges associated with QD use, particularly concerns regarding their potential toxicity and long-term effects on biological systems, and explore ongoing research aimed at mitigating these issues. Finally, we discuss future directions in QD technology, anticipating advancements that will further solidify their role in biological imaging and open up new avenues for scientific exploration.
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Affiliation(s)
- Shiyu Huang
- School of Chemistry and Chemical Engineering, Southwest University Chongqing 400700 China
- Key Laboratory of Carbohydrate Science and Engineering, Chongqing Normal University Chongqing 401331 China
| | - Gangliang Huang
- Key Laboratory of Carbohydrate Science and Engineering, Chongqing Normal University Chongqing 401331 China
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2
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Cai F, Zong H, Li M, Li C, Huang G, Pascual J, Liang C, Su Z, Li Z, Gao X, Hou B, Wang S, Zhou G, Du Z. Charge Carrier Regulation for Efficient Blue Quantum-Dot Light-Emitting Diodes Via a High-Mobility Coplanar Cyclopentane[ b]thiopyran Derivative. NANO LETTERS 2024; 24:5284-5291. [PMID: 38626333 PMCID: PMC11066960 DOI: 10.1021/acs.nanolett.4c00883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 04/11/2024] [Accepted: 04/12/2024] [Indexed: 04/18/2024]
Abstract
The performance of blue quantum dot light-emitting diodes (QLEDs) is limited by unbalanced charge injection, resulting from insufficient holes caused by low mobility or significant energy barriers. Here, we introduce an angular-shaped heteroarene based on cyclopentane[b]thiopyran (C8-SS) to modify the hole transport layer poly-N-vinylcarbazole (PVK), in blue QLEDs. C8-SS exhibits high hole mobility and conductivity due to the π···π and S···π interactions. Introducing C8-SS to PVK significantly enhanced hole mobility, increasing it by 2 orders of magnitude from 2.44 × 10-6 to 1.73 × 10-4 cm2 V-1 s-1. Benefiting from high mobility and conductivity, PVK:C8-SS-based QLEDs exhibit a low turn-on voltage (Von) of 3.2 V. More importantly, the optimized QLEDs achieve a high peak power efficiency (PE) of 7.13 lm/W, which is 2.65 times that of the control QLEDs. The as-proposed interface engineering provides a novel and effective strategy for achieving high-performance blue QLEDs in low-energy consumption lighting applications.
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Affiliation(s)
- Fensha Cai
- Key
Lab for Special Functional Materials of Ministry of Education, National
& Local Joint Engineering Research Center for High-efficiency
Display and Lighting Technology, School of Materials Science and Engineering,
and Collaborative Innovation Center of Nano Functional Materials and
Applications, Henan University, Kaifeng 475004, P. R. China
| | - Hao Zong
- Lab
of Advanced Materials, State Key Laboratory of Molecular Engineering
of Polymers, Fudan University, Shanghai 200438, P. R. China
| | - Meng Li
- Key
Lab for Special Functional Materials of Ministry of Education, National
& Local Joint Engineering Research Center for High-efficiency
Display and Lighting Technology, School of Materials Science and Engineering,
and Collaborative Innovation Center of Nano Functional Materials and
Applications, Henan University, Kaifeng 475004, P. R. China
| | - Chenguang Li
- Key
Lab for Special Functional Materials of Ministry of Education, National
& Local Joint Engineering Research Center for High-efficiency
Display and Lighting Technology, School of Materials Science and Engineering,
and Collaborative Innovation Center of Nano Functional Materials and
Applications, Henan University, Kaifeng 475004, P. R. China
| | - Guangguang Huang
- Key
Lab for Special Functional Materials of Ministry of Education, National
& Local Joint Engineering Research Center for High-efficiency
Display and Lighting Technology, School of Materials Science and Engineering,
and Collaborative Innovation Center of Nano Functional Materials and
Applications, Henan University, Kaifeng 475004, P. R. China
| | - Jorge Pascual
- Polymat, University of the Basque Country UPV/EHU, Donostia-San Sebastian 20018, Spain
| | - Chao Liang
- MOE
Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed
Matter, School of Physics, Xi’an
Jiaotong University, Xi’an 710049, P. R.
China
| | - Zhenhuang Su
- Shanghai
Synchrotron Radiation Facility (SSRF), Shanghai
Advanced Research Institute, Chinese Academy of Sciences, 239 Zhangheng Road, Shanghai 201204, P. R. China
| | - Zhe Li
- School of
Engineering and Materials Science (SEMS), Queen Mary University of London, London E1 4NS, United Kingdom
| | - Xingyu Gao
- Shanghai
Synchrotron Radiation Facility (SSRF), Shanghai
Advanced Research Institute, Chinese Academy of Sciences, 239 Zhangheng Road, Shanghai 201204, P. R. China
| | - Bo Hou
- School
of Physics and Astronomy, Cardiff University, Cardiff CF24 3AA, Wales, United Kingdom
| | - Shujie Wang
- Key
Lab for Special Functional Materials of Ministry of Education, National
& Local Joint Engineering Research Center for High-efficiency
Display and Lighting Technology, School of Materials Science and Engineering,
and Collaborative Innovation Center of Nano Functional Materials and
Applications, Henan University, Kaifeng 475004, P. R. China
| | - Gang Zhou
- Lab
of Advanced Materials, State Key Laboratory of Molecular Engineering
of Polymers, Fudan University, Shanghai 200438, P. R. China
| | - Zuliang Du
- Key
Lab for Special Functional Materials of Ministry of Education, National
& Local Joint Engineering Research Center for High-efficiency
Display and Lighting Technology, School of Materials Science and Engineering,
and Collaborative Innovation Center of Nano Functional Materials and
Applications, Henan University, Kaifeng 475004, P. R. China
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3
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Wang Z, Tang J, Han J, Xia J, Ma T, Chen XW. Bright Nonblinking Photoluminescence with Blinking Lifetime from a Nanocavity-Coupled Quantum Dot. NANO LETTERS 2024; 24:1761-1768. [PMID: 38261791 DOI: 10.1021/acs.nanolett.3c04661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
Colloidal quantum dots (QDs) are excellent luminescent nanomaterials for many optoelectronic applications. However, photoluminescence blinking has limited their practical use. Coupling QDs to plasmonic nanostructures shows potential in suppressing blinking. However, the underlying mechanism remains unclear and debated, hampering the development of bright nonblinking dots. Here, by deterministically coupling a QD to a plasmonic nanocavity, we clarify the mechanism and demonstrate unprecedented single-QD brightness. In particular, we report for the first time that a blinking QD could obtain nonblinking photoluminescence with a blinking lifetime through coupling to the nanocavity. We show that the plasmon-enhanced radiative decay outcompetes the nonradiative Auger process, enabling similar quantum yields for charged and neutral excitons in the same dot. Meanwhile, we demonstrate a record photon detection rate of 17 MHz from a colloidal QD, indicating an experimental photon generation rate of more than 500 MHz. These findings pave the way for ultrabright nonblinking QDs, benefiting diverse QD-based applications.
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Affiliation(s)
- Zhiyuan Wang
- School of Physics, Wuhan National Laboratory for Optoelectronics, Institute for Quantum Science and Engineering and Hubei Key Laboratory of Gravitation and Quantum Physics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Jianwei Tang
- School of Physics, Wuhan National Laboratory for Optoelectronics, Institute for Quantum Science and Engineering and Hubei Key Laboratory of Gravitation and Quantum Physics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
- Wuhan Institute of Quantum Technology, Wuhan 430206, P. R. China
| | - Jiahao Han
- School of Physics, Wuhan National Laboratory for Optoelectronics, Institute for Quantum Science and Engineering and Hubei Key Laboratory of Gravitation and Quantum Physics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Juan Xia
- School of Physics, Wuhan National Laboratory for Optoelectronics, Institute for Quantum Science and Engineering and Hubei Key Laboratory of Gravitation and Quantum Physics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Tianzi Ma
- School of Physics, Wuhan National Laboratory for Optoelectronics, Institute for Quantum Science and Engineering and Hubei Key Laboratory of Gravitation and Quantum Physics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Xue-Wen Chen
- School of Physics, Wuhan National Laboratory for Optoelectronics, Institute for Quantum Science and Engineering and Hubei Key Laboratory of Gravitation and Quantum Physics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
- Wuhan Institute of Quantum Technology, Wuhan 430206, P. R. China
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4
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Ye Y, Lin X, Fang W. Room-Temperature Single-Photon Sources Based on Colloidal Quantum Dots: A Review. MATERIALS (BASEL, SWITZERLAND) 2023; 16:7684. [PMID: 38138825 PMCID: PMC10744688 DOI: 10.3390/ma16247684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/06/2023] [Accepted: 12/13/2023] [Indexed: 12/24/2023]
Abstract
Single-photon sources (SPSs) play a crucial role in quantum photonics, and colloidal quantum dots (CQDs) have emerged as promising and cost-effective candidates for such applications due to their high-purity single-photon emission at room temperature. This review focuses on various aspects of CQDs as SPSs. Firstly, a brief overview of the fundamental optical properties of CQDs is provided, including emission wavelength engineering and fluorescence intermittency, and their single-photon emission properties. Subsequently, this review delves into research concerning CQDs as SPSs, covering topics such as the coupling of single CQDs to microcavities, both in weak and strong coupling regimes. Additionally, methods for localizing and positioning CQDs are explored, which are critical for on-chip SPSs devices.
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Affiliation(s)
- Yongzheng Ye
- Interdisciplinary Center for Quantum Information, State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China;
| | - Xing Lin
- College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China;
| | - Wei Fang
- Interdisciplinary Center for Quantum Information, State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China;
- Key Laboratory of Excited-State Materials of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
- Jiaxing Key Laboratory of Photonic Sensing & Intelligent Imaging, Jiaxing 314000, China
- Intelligent Optics & Photonics Research Center, Jiaxing Research Institute Zhejiang University, Jiaxing 314000, China
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5
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Zhang Y, Cai L, Fu Z, Cui F. Facile and Green Synthesis of Carbon Dots from Melia Azedarach Leaves for pH Sensing and Cell Imaging. J Fluoresc 2023; 33:1841-1851. [PMID: 36853552 DOI: 10.1007/s10895-023-03188-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 02/16/2023] [Indexed: 03/01/2023]
Abstract
Carbon dots (CDs) have preeminent application prospects as a new star in the nanomaterials field. In this work, a green and facile method to synthesize the blue-emitting CDs was proposed with Melia azedarach leaves as the carbon precursors. Using nature materials without other expensive reagents and instruments, the processes were simple and environmental-friendly. The CDs had high fluorescence quantum yield (11.8%) and excellent luminescence properties. The size of them were among 1.5-2.5 nm and the emission spectrum exhibited a strong peak at 460 nm when excited at 380 nm. Additionally, the CDs were stable in most ions but sensitive to different pH values. As a result, a pH sensor was established for the detection of pH with a linear range of 3-10 pH. Moreover, it was demonstrated that the synthesized CDs had extremely low cytotoxicity. Due to their low toxicity and good biocompatibility, they entered into the A549 cells successfully for cell imaging.
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Affiliation(s)
- Yan Zhang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, National Demonstration Center for Experimental Chemistry Education, Henan Engineering Laboratory for Bioconversion Technology of Functional Microbes, School of Chemistry and Chemical Engineering, College of Life Science, Henan Normal University, Xinxiang, 453007, People's Republic of China.
- College of Food and Biological Engineering, Henan University of Animal Husbandry and Economy, Zhengzhou, Henan, 450000, People's Republic of China.
| | - Lin Cai
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, National Demonstration Center for Experimental Chemistry Education, Henan Engineering Laboratory for Bioconversion Technology of Functional Microbes, School of Chemistry and Chemical Engineering, College of Life Science, Henan Normal University, Xinxiang, 453007, People's Republic of China
| | - Zheng Fu
- Department of Electrical Engineering, Henan Institute of Science and Technology, Henan, Xinxiang, 453000, People's Republic of China
| | - Fengling Cui
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, National Demonstration Center for Experimental Chemistry Education, Henan Engineering Laboratory for Bioconversion Technology of Functional Microbes, School of Chemistry and Chemical Engineering, College of Life Science, Henan Normal University, Xinxiang, 453007, People's Republic of China.
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6
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Lee G, Jeong WH, Kim B, Jeon S, Smith AM, Seo J, Suzuki K, Kim JY, Lee H, Choi H, Chung DS, Choi J, Choi H, Lim SJ. Design and Synthesis of CdHgSe/HgS/CdZnS Core/Multi-Shell Quantum Dots Exhibiting High-Quantum-Yield Tissue-Penetrating Shortwave Infrared Luminescence. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301161. [PMID: 37127870 PMCID: PMC11341011 DOI: 10.1002/smll.202301161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 04/18/2023] [Indexed: 05/03/2023]
Abstract
Cdx Hg1- x Se/HgS/Cdy Zn1- y S core/multi-shell quantum dots (QDs) exhibiting bright tissue-penetrating shortwave infrared (SWIR; 1000-1700 nm) photoluminescence (PL) are engineered. The new structure consists of a quasi-type-II Cdx Hg1- x Se/HgS core/inner shell domain creating luminescent bandgap tunable across SWIR window and a wide-bandgap Cdy Zn1- y S outer shell boosting the PL quantum yield (QY). This compositional sequence also facilitates uniform and coherent shell growth by minimizing interfacial lattice mismatches, resulting in high QYs in both organic (40-80%) and aqueous (20-70%) solvents with maximum QYs of 87 and 73%, respectively, which are comparable to those of brightest visible-to-near infrared QDs. Moreover, they maintain bright PL in a photocurable resin (QY 40%, peak wavelength ≈ 1300 nm), enabling the fabrication of SWIR-luminescent composites of diverse morphology and concentration. These composites are used to localize controlled amounts of SWIR QDs inside artificial (Intralipid) and porcine tissues and quantitatively evaluate the applicability as luminescent probes for deep-tissue imaging.
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Affiliation(s)
- Gyudong Lee
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang Daero, Hyeonpung-Eup, Dalseong-Gun, Daegu, 42988, Republic of Korea
- Division of Nanotechnology, DGIST, 333 Techno Jungang Daero, Hyeonpung-Eup, Dalseong-Gun, Daegu, 42988, Republic of Korea
| | - Woo Hyeon Jeong
- Division of Nanotechnology, DGIST, 333 Techno Jungang Daero, Hyeonpung-Eup, Dalseong-Gun, Daegu, 42988, Republic of Korea
- Department of Chemistry and Research Institute for Natural Science, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Beomjoo Kim
- Department of Robotics Engineering, DGIST, 333 Techno Jungang Daero, Hyeonpung-Eup, Dalseong-Gun, Daegu, 42988, Republic of Korea
- DGIST-ETH Microrobotics Research Center, DGIST, 333 Techno Jungang Daero, Hyeonpung-Eup, Dalseong-Gun, Daegu, 42988, Republic of Korea
| | - Sungwoong Jeon
- DGIST-ETH Microrobotics Research Center, DGIST, 333 Techno Jungang Daero, Hyeonpung-Eup, Dalseong-Gun, Daegu, 42988, Republic of Korea
- IMsystem Corp., DGIST, 333 Techno Jungang Daero, Hyeonpung-Eup, Dalseong-Gun, Daegu, 42988, Republic of Korea
| | - Andrew M Smith
- Department of Bioengineering, University of Illinois Urbana-Champaign (UIUC), Urbana, IL, 61801, USA
- Department of Materials Science and Engineering, UIUC, Urbana, IL, 61801, USA
- Cancer Center at Illinois, UIUC, Urbana, IL, 61801, USA
- Carle Illinois College of Medicine, UIUC, Urbana, IL, 61801, USA
| | - Jongcheol Seo
- Department of Chemistry, POSTECH, 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongsangbuk-Do, 37673, Republic of Korea
| | - Kengo Suzuki
- Applied Spectroscopy System Department, Hamamatsu Photonics K.K., 812 Joko-Cho, Higashi-Ku, Hamamatsu City, 431-3196, Japan
| | - Jin-Young Kim
- DGIST-ETH Microrobotics Research Center, DGIST, 333 Techno Jungang Daero, Hyeonpung-Eup, Dalseong-Gun, Daegu, 42988, Republic of Korea
- Division of Biotechnology, DGIST, 333 Techno Jungang Daero, Hyeonpung-Eup, Dalseong-Gun, Daegu, 42988, Republic of Korea
| | - Hyunki Lee
- DGIST-ETH Microrobotics Research Center, DGIST, 333 Techno Jungang Daero, Hyeonpung-Eup, Dalseong-Gun, Daegu, 42988, Republic of Korea
- Division of Intelligent Robot, DGIST, 333 Techno Jungang Daero, Hyeonpung-Eup, Dalseong-Gun, Daegu, 42988, Republic of Korea
| | - Hongsoo Choi
- Department of Robotics Engineering, DGIST, 333 Techno Jungang Daero, Hyeonpung-Eup, Dalseong-Gun, Daegu, 42988, Republic of Korea
- DGIST-ETH Microrobotics Research Center, DGIST, 333 Techno Jungang Daero, Hyeonpung-Eup, Dalseong-Gun, Daegu, 42988, Republic of Korea
| | - Dae Sung Chung
- Department of Chemical Engineering, POSTECH, 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongsangbuk-Do, 37673, Republic of Korea
| | - Jongmin Choi
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang Daero, Hyeonpung-Eup, Dalseong-Gun, Daegu, 42988, Republic of Korea
| | - Hyosung Choi
- Department of Chemistry and Research Institute for Natural Science, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Sung Jun Lim
- Division of Nanotechnology, DGIST, 333 Techno Jungang Daero, Hyeonpung-Eup, Dalseong-Gun, Daegu, 42988, Republic of Korea
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Nguyen HA, Dixon G, Dou FY, Gallagher S, Gibbs S, Ladd DM, Marino E, Ondry JC, Shanahan JP, Vasileiadou ES, Barlow S, Gamelin DR, Ginger DS, Jonas DM, Kanatzidis MG, Marder SR, Morton D, Murray CB, Owen JS, Talapin DV, Toney MF, Cossairt BM. Design Rules for Obtaining Narrow Luminescence from Semiconductors Made in Solution. Chem Rev 2023. [PMID: 37311205 DOI: 10.1021/acs.chemrev.3c00097] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Solution-processed semiconductors are in demand for present and next-generation optoelectronic technologies ranging from displays to quantum light sources because of their scalability and ease of integration into devices with diverse form factors. One of the central requirements for semiconductors used in these applications is a narrow photoluminescence (PL) line width. Narrow emission line widths are needed to ensure both color and single-photon purity, raising the question of what design rules are needed to obtain narrow emission from semiconductors made in solution. In this review, we first examine the requirements for colloidal emitters for a variety of applications including light-emitting diodes, photodetectors, lasers, and quantum information science. Next, we will delve into the sources of spectral broadening, including "homogeneous" broadening from dynamical broadening mechanisms in single-particle spectra, heterogeneous broadening from static structural differences in ensemble spectra, and spectral diffusion. Then, we compare the current state of the art in terms of emission line width for a variety of colloidal materials including II-VI quantum dots (QDs) and nanoplatelets, III-V QDs, alloyed QDs, metal-halide perovskites including nanocrystals and 2D structures, doped nanocrystals, and, finally, as a point of comparison, organic molecules. We end with some conclusions and connections, including an outline of promising paths forward.
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Affiliation(s)
- Hao A Nguyen
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Grant Dixon
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Florence Y Dou
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Shaun Gallagher
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Stephen Gibbs
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Dylan M Ladd
- Department of Materials Science and Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States
| | - Emanuele Marino
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Dipartimento di Fisica e Chimica, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy
| | - Justin C Ondry
- Department of Chemistry, James Franck Institute, and Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - James P Shanahan
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Eugenia S Vasileiadou
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Stephen Barlow
- Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, Colorado 80303, United States
| | - Daniel R Gamelin
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - David S Ginger
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - David M Jonas
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
- Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, Colorado 80303, United States
| | - Mercouri G Kanatzidis
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Seth R Marder
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
- Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, Colorado 80303, United States
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States
| | - Daniel Morton
- Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, Colorado 80303, United States
| | - Christopher B Murray
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Jonathan S Owen
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Dmitri V Talapin
- Department of Chemistry, James Franck Institute, and Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Michael F Toney
- Department of Materials Science and Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States
- Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, Colorado 80303, United States
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States
| | - Brandi M Cossairt
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
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8
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Nguyen HA, Sharp D, Fröch JE, Cai YY, Wu S, Monahan M, Munley C, Manna A, Majumdar A, Kagan CR, Cossairt BM. Deterministic Quantum Light Arrays from Giant Silica-Shelled Quantum Dots. ACS APPLIED MATERIALS & INTERFACES 2023; 15:4294-4302. [PMID: 36507852 DOI: 10.1021/acsami.2c18475] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Colloidal quantum dots (QDs) are promising candidates for single-photon sources with applications in photonic quantum information technologies. Developing practical photonic quantum devices with colloidal materials, however, requires scalable deterministic placement of stable single QD emitters. In this work, we describe a method to exploit QD size to facilitate deterministic positioning of single QDs into large arrays while maintaining their photostability and single-photon emission properties. CdSe/CdS core/shell QDs were encapsulated in silica to both increase their physical size without perturbing their quantum-confined emission and enhance their photostability. These giant QDs were then precisely positioned into ordered arrays using template-assisted self-assembly with a 75% yield for single QDs. We show that the QDs before and after assembly exhibit antibunching behavior at room temperature and their optical properties are retained after an extended period of time. Together, this bottom-up synthetic approach via silica shelling and the robust template-assisted self-assembly offer a unique strategy to produce scalable quantum photonics platforms using colloidal QDs as single-photon emitters.
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Affiliation(s)
- Hao A Nguyen
- Department of Chemistry, University of Washington, Seattle, Washington 98189, United States
| | - David Sharp
- Department of Physics, University of Washington, Seattle, Washington 98185, United States
| | - Johannes E Fröch
- Department of Physics, University of Washington, Seattle, Washington 98185, United States
- Department of Electrical and Computer Engineering, University of Washington, Seattle, Washington 98195, United States
| | - Yi-Yu Cai
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Shenwei Wu
- Department of Chemistry, University of Washington, Seattle, Washington 98189, United States
| | - Madison Monahan
- Department of Chemistry, University of Washington, Seattle, Washington 98189, United States
| | - Christopher Munley
- Department of Physics, University of Washington, Seattle, Washington 98185, United States
| | - Arnab Manna
- Department of Physics, University of Washington, Seattle, Washington 98185, United States
| | - Arka Majumdar
- Department of Physics, University of Washington, Seattle, Washington 98185, United States
- Department of Electrical and Computer Engineering, University of Washington, Seattle, Washington 98195, United States
| | - Cherie R Kagan
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Brandi M Cossairt
- Department of Chemistry, University of Washington, Seattle, Washington 98189, United States
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9
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Lyu B, Hu J, Chen Y, Ma Z. Spectra Stable Quantum Dots Enabled by Band Engineering for Boosting Electroluminescence in Devices. MICROMACHINES 2022; 13:1315. [PMID: 36014239 PMCID: PMC9416132 DOI: 10.3390/mi13081315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 08/12/2022] [Accepted: 08/12/2022] [Indexed: 06/15/2023]
Abstract
The band level landscape in quantum dots is of great significance toward achieving stable and efficient electroluminescent devices. A series of quantum dots with specific emission and band structure of the intermediate layer is designed, including rich CdS (R-CdS), thick ZnSe (T-ZnSe), thin ZnSe (t-ZnSe) and ZnCdS (R-ZnCdS) intermediate alloy shell layers. These quantum dots in QLEDs show superior performance, including maximum current efficiency, external quantum efficiencies and a T50 lifetime (at 1000 cd/m2) of 47.2 cd/A, 11.2% and 504 h for R-CdS; 61.6 cd/A, 14.7% and 612 h for t-ZnSe; 70.5 cd/A, 16.8% and 924 h for T-ZnSe; and 82.0 cd/A, 19.6% and 1104 h for R-ZnCdS. Among them, the quantum dots with the ZnCdS interlayer exhibit deep electron confinement and shallow hole confinement capabilities, which facilitate the efficient injection and radiative recombination of carriers into the emitting layer. Furthermore, the optimal devices show a superior T50 lifetime of more than 1000 h. The proposed novel methodology of quantum dot band engineering is expected to start a new way for further enhancing QLED exploration.
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Affiliation(s)
- Bingbing Lyu
- School of Physics, Harbin Institute of Technology, Harbin 150001, China
| | - Junxia Hu
- School of Information Engineering, Xinyang Agriculture and Forestry University, Xinyang 464000, China
| | - Yani Chen
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China
| | - Zhiwei Ma
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
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10
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Yang H, Li S, Zhang L, Xiang W, Zhang Y, Wang X, Xiao M, Cui Y, Zhang J. Observation of high-density multi-excitons in medium-size CdSe/CdZnS/ZnS colloidal quantum dots through transient spectroscopy and their optical gain properties. NANOSCALE 2022; 14:5369-5376. [PMID: 35311884 DOI: 10.1039/d2nr00761d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Semiconductor quantum dots have extremely significant advantages in terms of optoelectronic devices. However, it is unfeasible to avoid the generation of charged exciton states during operation. Such states can change the radiation recombination rate and bring additional non-radiative Auger recombination channels. Herein, we synthesize high photoluminescence quantum yield medium-size CdSe/CdZnS/ZnS core/alloy shell/shell QDs. Their multiexciton spectra and dynamics were systematically studied by pump-power-dependent fluorescence blinking and time-correlated spectroscopy. The lifetimes of positively/negatively charged trions and biexcitons are estimated to be 0.74/6.1 and 0.16 ns, respectively. It demonstrated that the band-edge biexciton is influenced by the Coulomb interaction and Stark effect. The amplified spontaneous emission threshold is only 81 μJ cm-2 and can retain a long operation lifetime under continuous pumping. A vertical microcavity surface-emitting laser device is fabricated using these QDs. The coupling factor between the spontaneous emission and cavity mode is 0.81, which benefits the low stimulated emission threshold. This work provides a new perspective of the charged states in the multiexciton AR process in the QDs, implying a promising application prospect of such QDs as optical gain materials in "zero-threshold" laser fabrication.
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Affiliation(s)
- Hongyu Yang
- Advanced Photonic Center, School of Electronic science and Engineering, Southeast University, Nanjing 210096, China.
| | - Si Li
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, and School of Physics, Nanjing University, Nanjing 210093, China.
| | - Lei Zhang
- Advanced Photonic Center, School of Electronic science and Engineering, Southeast University, Nanjing 210096, China.
| | - Wenbin Xiang
- Advanced Photonic Center, School of Electronic science and Engineering, Southeast University, Nanjing 210096, China.
| | - Yi Zhang
- College of Energy and Electrical Engineering, Hohai University, Nanjing, 210098, China.
| | - Xiaoyong Wang
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, and School of Physics, Nanjing University, Nanjing 210093, China.
| | - Min Xiao
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, and School of Physics, Nanjing University, Nanjing 210093, China.
- University of Arkansas, Fayetteville, Arkansas 72701, USA
| | - Yiping Cui
- Advanced Photonic Center, School of Electronic science and Engineering, Southeast University, Nanjing 210096, China.
| | - Jiayu Zhang
- Advanced Photonic Center, School of Electronic science and Engineering, Southeast University, Nanjing 210096, China.
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11
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Hu Z, Shu Y, Qin H, Hu X, Peng X. Water Effects on Colloidal Semiconductor Nanocrystals: Correlation of Photophysics and Photochemistry. J Am Chem Soc 2021; 143:18721-18732. [PMID: 34705444 DOI: 10.1021/jacs.1c09363] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
With high-quality CdSe/CdS core/shell nanocrystals as the main model system and under a controlled atmosphere, responses of photoexcited semiconductor nanocrystals to two active species (water and/or oxygen) in an ambient environment are studied systematically. Under photoexcitation, although high-quality semiconductor nanocrystals in either thin solid films or various solutions have a near-unity photoluminescence quantum yield, there is still a small probability (∼10-5 per photon absorbed) to be photoreduced by the water molecules efficiently accumulated in the highly hydrophilic nanocrystal-ligands interface. The resulting negatively charged nanocrystals are the starting point of most photophysical variations, and the hydroxyl radical─key photo-oxidation product of water─plays the main role for initiating various photochemical processes. Depending on the supplementation of water to the interface, accessibility to oxygen, photoirradiation power, type of matrices, type of measurement schemes, and solubility of nanocrystals in the solution, various photophysical/photochemical phenomena─either reported or not reported in the literature─are reproducibly observed. Results confirm that photophysical properties and photochemical reactions can be well-correlated, offering a unified and unique basis for fundamental studies and the design of processing techniques in industry.
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Affiliation(s)
- Zhuang Hu
- Key Laboratory of Excited-State Materials of Zhejiang Province and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yufei Shu
- Key Laboratory of Excited-State Materials of Zhejiang Province and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Haiyan Qin
- Key Laboratory of Excited-State Materials of Zhejiang Province and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Xiaofei Hu
- Key Laboratory of Excited-State Materials of Zhejiang Province and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Xiaogang Peng
- Key Laboratory of Excited-State Materials of Zhejiang Province and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
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12
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Kumar V, Nagal V, Srivastava S, Kumar M, Gupta BK, Hafiz AK, Singh K. Power Dependent Hot Carrier Cooling Dynamics in Trioctylphosphine Capped CsPbBr
3
Perovskite Quantum Dots Using Ultrafast Spectroscopy. ChemistrySelect 2021. [DOI: 10.1002/slct.202102450] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Virendra Kumar
- Nanotechnology Lab School of Physical Sciences Jawaharlal Nehru University (JNU) New Delhi 110067 India
| | - Vandana Nagal
- Quantum and Nano-photonics Research Laboratory Centre for Nanoscience and Nanotechnology Jamia Millia Islamia (A Central University) New Delhi 110025 India
| | - Shubhda Srivastava
- CSIR - National Physical Laboratory Dr. K. S. Krishnan Road New Delhi 110012 India
| | - Mahesh Kumar
- CSIR - National Physical Laboratory Dr. K. S. Krishnan Road New Delhi 110012 India
| | - Bipin K. Gupta
- CSIR - National Physical Laboratory Dr. K. S. Krishnan Road New Delhi 110012 India
| | - Aurangzeb K. Hafiz
- Quantum and Nano-photonics Research Laboratory Centre for Nanoscience and Nanotechnology Jamia Millia Islamia (A Central University) New Delhi 110025 India
| | - Kedar Singh
- Nanotechnology Lab School of Physical Sciences Jawaharlal Nehru University (JNU) New Delhi 110067 India
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13
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Wei Z, Wang B, Hong D, Xie M, Wan S, Yang W, Lu S, Tian Y. Rational Building of Nonblinking Carbon Dots via Charged State Recovery. J Phys Chem Lett 2021; 12:8614-8620. [PMID: 34469165 DOI: 10.1021/acs.jpclett.1c02594] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Carbon dots (CDs), as emerging luminescent nanomaterials, possess excellent but complex properties, and thus, they have attracted immense attention for their applications. Further practical application of CDs has been hindered by their limited photostability and photoluminescence intermittency. In this study, we demonstrated that an antioxidant (Trolox) can dramatically enhance the photostability and minimize the photoblinking of CDs without affecting their native spectral characteristics. Significant photoluminescence enhancement and stabilization were observed with the addition of Trolox in ensemble level. Meanwhile, strikingly stable emissions from individual CDs have been observed in the presence of Trolox in single-particle-level experiments. Our observations revealed that the charged state of CDs can be effectively recovered to a neutral state by Trolox via electron transfer. These results prove that the combination of antioxidants and CDs is a powerful means to improve their fluorescence robustness, which is crucial for applications that demand long-lived, nonblinking emission.
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Affiliation(s)
- Zhihong Wei
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Vehicle Emissions Control, Nanjing University, Nanjing 210023, China
| | - Boyang Wang
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Daocheng Hong
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, China
| | - Mingcai Xie
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Vehicle Emissions Control, Nanjing University, Nanjing 210023, China
| | - Sushu Wan
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Vehicle Emissions Control, Nanjing University, Nanjing 210023, China
| | - Weiqing Yang
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Vehicle Emissions Control, Nanjing University, Nanjing 210023, China
| | - Siyu Lu
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Yuxi Tian
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Vehicle Emissions Control, Nanjing University, Nanjing 210023, China
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14
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Lei L, Huang D, Chen S, Zhang C, Chen Y, Deng R. Metal chalcogenide/oxide-based quantum dots decorated functional materials for energy-related applications: Synthesis and preservation. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213715] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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15
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Guo W, Tang J, Zhang G, Li B, Yang C, Chen R, Qin C, Hu J, Zhong H, Xiao L, Jia S. Photoluminescence Blinking and Biexciton Auger Recombination in Single Colloidal Quantum Dots with Sharp and Smooth Core/Shell Interfaces. J Phys Chem Lett 2021; 12:405-412. [PMID: 33356280 DOI: 10.1021/acs.jpclett.0c03065] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
There is an inconsistence on whether a smooth core/shell interface can reduce Auger recombination and suppress photoluminescence (PL) blinking in single colloidal quantum dots (QDs). Here, we investigate the influence of a core/shell interface on PL blinking and biexciton Auger recombination by comparing the single-dot PL spectra of CdxZn1-xSeyS1-y/ZnS core/shell QDs with sharp and smooth interfaces. The inconsistence can be clarified when considering different PL blinking mechanisms. For the single QDs showing Auger blinking, a smooth core/shell interface potential can suppress PL blinking through reducing the Auger recombination. In contrast, we find slightly reduced biexciton Auger recombination rates but increased PL blinking activities in the band-edge carrier (BC)-blinking QDs with the smooth core/shell interface. This is because the smooth interface potential cannot reduce the PL blinking caused by the transfer of electrons to the surface states; however, there is potential to increase electron wave function delocalization for reducing the biexciton Auger recombination rate.
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Affiliation(s)
- Wenli Guo
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Jialun Tang
- Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Guofeng Zhang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Bin Li
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
- Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, College of Physics and Information Engineering, Shanxi Normal University, Linfen 041004, China
| | - Changgang Yang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Ruiyun Chen
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Chengbing Qin
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Jianyong Hu
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Haizheng Zhong
- Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Liantuan Xiao
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Suotang Jia
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
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16
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Zhao Y, Xue D, Wang J, Lu M, Shen X, Gao X, Yu WW, Bai X. Smart quantum dot LEDs with simulated solar spectrum for intelligent lighting. NANOTECHNOLOGY 2020; 31:505207. [PMID: 32736372 DOI: 10.1088/1361-6528/abab2f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
LED light bulbs that simulate solar spectrum were fabricated using CdSe core-shell quantum dots in combination with GaN blue-light chips. They exhibited excellent optical properties such as white CIE coordinates of (0.33, 0.33), high color rendering index (CRI) of 98 and correlated color temperature (CCT) of 5352 K. Moreover, a circuit system was used to control the LEDs so that the lighting spectrum changes with the time in a day to simulate the actual solar spectrum. The results show that the sun-like spectrum smart bulbs not only have good optical properties and high electrical stability, but also can automatically adjust their spectrum according to the time, making the lighting natural. This work makes sun-like lighting conditions for some special environments to promote the application of smart bulbs in smart lighting.
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Affiliation(s)
- Yue Zhao
- State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, People's Republic of China
| | - Dingke Xue
- State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, People's Republic of China
| | - Jiatong Wang
- State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, People's Republic of China
| | - Min Lu
- State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, People's Republic of China
| | - Xinyu Shen
- State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, People's Republic of China
| | - Xupeng Gao
- State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, People's Republic of China
| | - William W Yu
- State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, People's Republic of China
- Department of Chemistry and Physics, Louisiana State University, Shreveport, LA 71115, United States of America
| | - Xue Bai
- State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, People's Republic of China
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17
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Kargozar S, Hoseini SJ, Milan PB, Hooshmand S, Kim H, Mozafari M. Quantum Dots: A Review from Concept to Clinic. Biotechnol J 2020; 15:e2000117. [DOI: 10.1002/biot.202000117] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 07/10/2020] [Indexed: 01/30/2023]
Affiliation(s)
- Saeid Kargozar
- Tissue Engineering Research Group (TERG), Department of Anatomy and Cell Biology, School of Medicine Mashhad University of Medical Sciences Mashhad Iran
| | - Seyed Javad Hoseini
- Department of Medical Biotechnology and Nanotechnology, School of Medicine Mashhad University of Medical Sciences Mashhad Iran
| | - Peiman Brouki Milan
- Cellular and Molecular Research Centre Iran University of Medical Sciences Tehran Iran
- Institutes of Regenerative Medicine, Faculty of Advanced Technologies in Medicine Iran University of Medical Sciences Tehran Iran
- Department of Tissue Engineering and Regenerative Medicine, Faculty of Advanced Technologies in Medicine Iran University of Medical Sciences Tehran Iran
| | - Sara Hooshmand
- Pharmacological Research Center of Medicinal Plants Mashhad University of Medical Sciences Mashhad Iran
- Department of Pharmacology, Faculty of Medicine Mashhad University of Medical Sciences Mashhad Iran
| | - Hae‐Won Kim
- Institute of Tissue Regeneration Engineering (ITREN) Dankook University Cheonan Republic of Korea
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine Dankook University Cheonan Republic of Korea
- Department of Biomaterials Science, School of Dentistry Dankook University Cheonan Republic of Korea
| | - Masoud Mozafari
- Department of Tissue Engineering and Regenerative Medicine, Faculty of Advanced Technologies in Medicine Iran University of Medical Sciences Tehran Iran
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18
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Bai P, Hu A, Liu Y, Jin Y, Gao Y. Printing and In Situ Assembly of CdSe/CdS Nanoplatelets as Uniform Films with Unity In-Plane Transition Dipole Moment. J Phys Chem Lett 2020; 11:4524-4529. [PMID: 32432888 DOI: 10.1021/acs.jpclett.0c00748] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Distribution of the transition dipole moments (TDMs) of light emitters can intrinsically affect the light out-coupling efficiency of planar light-emitting diodes (LEDs). Lacking the control of TDM distribution has limited the efficiency of nanocrystal-based LEDs to 20%. Here, we present a method that deposits uniform nanocrystal films with unity in-plane TDM distribution. Combining an inkjet printing technique and colloidal nanocrystal self-assembly, we achieved direct printing and in situ assembly of colloidal CdSe/CdS nanoplatelets to all orient "face-down" on various substrates. With motorized translation stages, pattern printing is realized, which demonstrates the potential for integration in industrial-scale fabrication. The method is applied to achieve uniform nanoplatelet films with unity in-plane TDM distribution on zinc-oxide films, a commonly used electron-transport layer. Thus, our work paves the way to break the light out-coupling efficiency limitation of 20% in state-of-the-art nanocrystal-based LEDs, which exclusively possess an isotropic TDM distribution.
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Affiliation(s)
- Peng Bai
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - An Hu
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - Yang Liu
- Centre for Chemistry of High-Performance & Novel Materials, State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yizheng Jin
- Centre for Chemistry of High-Performance & Novel Materials, State Key Laboratory of Silicon Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yunan Gao
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
- Frontiers Science Center for Nano-optoelectronics, Beijing 100871, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
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19
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Pu C, Dai X, Shu Y, Zhu M, Deng Y, Jin Y, Peng X. Electrochemically-stable ligands bridge the photoluminescence-electroluminescence gap of quantum dots. Nat Commun 2020; 11:937. [PMID: 32071297 PMCID: PMC7028909 DOI: 10.1038/s41467-020-14756-5] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 01/16/2020] [Indexed: 12/13/2022] Open
Abstract
Colloidal quantum dots are promising emitters for quantum-dot-based light-emitting-diodes. Though quantum dots have been synthesized with efficient, stable, and high colour-purity photoluminescence, inheriting their superior luminescent properties in light-emitting-diodes remains challenging. This is commonly attributed to unbalanced charge injection and/or interfacial exciton quenching in the devices. Here, a general but previously overlooked degradation channel in light-emitting-diodes, i.e., operando electrochemical reactions of surface ligands with injected charge carriers, is identified. We develop a strategy of applying electrochemically-inert ligands to quantum dots with excellent luminescent properties to bridge their photoluminescence-electroluminescence gap. This material-design principle is general for boosting electroluminescence efficiency and lifetime of the light-emitting-diodes, resulting in record-long operational lifetimes for both red-emitting light-emitting-diodes (T95 > 3800 h at 1000 cd m−2) and blue-emitting light-emitting-diodes (T50 > 10,000 h at 100 cd m−2). Our study provides a critical guideline for the quantum dots to be used in optoelectronic and electronic devices. New design principles for bridging the photoluminescence and electroluminescence of colloidal quantum dots are needed. In this work, the authors report electrochemically-inert ligands as a general material-design strategy for realizing high-performance LEDs based on quantum dots.
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Affiliation(s)
- Chaodan Pu
- Centre for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Xingliang Dai
- Centre for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China.,State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027, China
| | - Yufei Shu
- Centre for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Meiyi Zhu
- Centre for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Yunzhou Deng
- Centre for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China.,State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027, China
| | - Yizheng Jin
- Centre for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China. .,State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027, China.
| | - Xiaogang Peng
- Centre for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China.
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20
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Jin X, Xie K, Zhang T, Lian H, Zhang Z, Xu B, Li D, Li Q. Cation exchange assisted synthesis of ZnCdSe/ZnSe quantum dots with narrow emission line widths and near-unity photoluminescence quantum yields. Chem Commun (Camb) 2020; 56:6130-6133. [DOI: 10.1039/d0cc01302a] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
ZnCdSe/ZnSe quantum dots reveal a notable FWHM of 17.1 nm with a near-unity PL QY at 631 nm.
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Affiliation(s)
- Xiao Jin
- Key Laboratory of Clean Energy Materials Chemistry of Guangdong Higher Education Institutes
- Lingnan Normal University
- Zhanjiang 524048
- P. R. China
- Key Laboratory of Environmentally Friendly Functional Materials and Devices
| | - Kanlin Xie
- Key Laboratory of Environmentally Friendly Functional Materials and Devices
- Lingnan Normal University
- Zhanjiang 524048
- P. R. China
| | - Tingting Zhang
- Key Laboratory of Environmentally Friendly Functional Materials and Devices
- Lingnan Normal University
- Zhanjiang 524048
- P. R. China
| | - Huada Lian
- Key Laboratory of Environmentally Friendly Functional Materials and Devices
- Lingnan Normal University
- Zhanjiang 524048
- P. R. China
| | - Zhenghe Zhang
- Key Laboratory of Environmentally Friendly Functional Materials and Devices
- Lingnan Normal University
- Zhanjiang 524048
- P. R. China
| | - Bing Xu
- Key Laboratory of Environmentally Friendly Functional Materials and Devices
- Lingnan Normal University
- Zhanjiang 524048
- P. R. China
| | - Dongyu Li
- Key Laboratory of Clean Energy Materials Chemistry of Guangdong Higher Education Institutes
- Lingnan Normal University
- Zhanjiang 524048
- P. R. China
- Key Laboratory of Environmentally Friendly Functional Materials and Devices
| | - Qinghua Li
- Key Laboratory of Clean Energy Materials Chemistry of Guangdong Higher Education Institutes
- Lingnan Normal University
- Zhanjiang 524048
- P. R. China
- Key Laboratory of Environmentally Friendly Functional Materials and Devices
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21
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Cao L, Liu X, Guo Z, Zhou L. Surface/Interface Engineering for Constructing Advanced Nanostructured Light-Emitting Diodes with Improved Performance: A Brief Review. MICROMACHINES 2019; 10:E821. [PMID: 31783596 PMCID: PMC6953049 DOI: 10.3390/mi10120821] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 11/21/2019] [Accepted: 11/25/2019] [Indexed: 01/30/2023]
Abstract
With the rise of nanoscience and nanotechnologies, especially the continuous deepening of research on low-dimensional materials and structures, various kinds of light-emitting devices based on nanometer-structured materials are gradually becoming the natural candidates for the next generation of advanced optoelectronic devices with improved performance through engineering their interface/surface properties. As dimensions of light-emitting devices are scaled down to the nanoscale, the plentitude of their surface/interface properties is one of the key factors for their dominating device performance. In this paper, firstly, the generation, classification, and influence of surface/interface states on nanometer optical devices will be given theoretically. Secondly, the relationship between the surface/interface properties and light-emitting diode device performance will be investigated, and the related physical mechanisms will be revealed by introducing classic examples. Especially, how to improve the performance of light-emitting diodes by using factors such as the surface/interface purification, quantum dots (QDs)-emitting layer, surface ligands, optimization of device architecture, and so on will be summarized. Finally, we explore the main influencing actors of research breakthroughs related to the surface/interface properties on the current and future applications for nanostructured light-emitting devices.
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Affiliation(s)
- Lianzhen Cao
- Department of Physics and Optoelectronic Engineering, Weifang University, Weifang 261061, China;
- CASKey Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Xia Liu
- Department of Physics and Optoelectronic Engineering, Weifang University, Weifang 261061, China;
- CASKey Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Zhen Guo
- CASKey Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
- Shandong Guo Ke Medical Technology Development Co., Ltd., Jinan 25001, China
- Zhongke Mass Spectrometry (Tianjin) Medical Technology Co., Ltd. Tianjin 300399, China
| | - Lianqun Zhou
- CASKey Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
- Jihua Laboratory, Foshan 528200, China
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22
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Tang X, Yang J, Li S, Liu Z, Hu Z, Hao J, Du J, Leng Y, Qin H, Lin X, Lin Y, Tian Y, Zhou M, Xiong Q. Single Halide Perovskite/Semiconductor Core/Shell Quantum Dots with Ultrastability and Nonblinking Properties. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1900412. [PMID: 31559125 PMCID: PMC6755528 DOI: 10.1002/advs.201900412] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 05/27/2019] [Indexed: 05/05/2023]
Abstract
The further practical applications of halide perovskite quantum dots (QDs) are blocked by problems of instability and nonradiative Auger recombination manifested as photoluminescence blinking. Here, single core/shell structured perovskite semiconductor QDs are successfully fabricated by capping CsPbBr3 QD core with CdS shell. It is demonstrated that CsPbBr3/CdS core/shell QDs exhibit ultrahigh chemical stability and nonblinking photoluminescence with high quantum yield due to the reduced electronic traps within the core/shell structure. Efficiency of amplified spontaneous emission exhibits obvious enhancement compared to that of pure CsPbBr3 QDs, originating from the mitigated competition between stimulated emission and suppressed nonradiative biexciton Auger recombination. Furthermore, low-threshold whispering-gallery-mode lasing with a high-quality factor is achieved by incorporating CsPbBr3/CdS QDs into microtubule resonators. Density functional theory (DFT)-based first-principles calculations are also performed to reveal the atomic interface structure, which supports the existence of CsPbBr3/CdS structure. An interesting feature of spatially separated charge density at CsPbBr3/CdS interface is found, which may greatly contribute to the suppressed Auger recombination. The results provide a practical approach to improve the stability and suppress the blinking of halide perovskite QDs, which may pave the way for future applications for various optoelectronic devices.
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Affiliation(s)
- Xiaosheng Tang
- Key Laboratory of Optoelectronic Technology and Systems (Ministry of Education)College of Optoelectronic EngineeringChongqing UniversityChongqing400044China
| | - Jie Yang
- Key Laboratory of Optoelectronic Technology and Systems (Ministry of Education)College of Optoelectronic EngineeringChongqing UniversityChongqing400044China
| | - Shiqi Li
- Key Laboratory of Optoelectronic Technology and Systems (Ministry of Education)College of Optoelectronic EngineeringChongqing UniversityChongqing400044China
| | - Zhengzheng Liu
- State Key Laboratory of High Field Laser PhysicsShanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai201800China
- Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing100049China
| | - Zhiping Hu
- Key Laboratory of Optoelectronic Technology and Systems (Ministry of Education)College of Optoelectronic EngineeringChongqing UniversityChongqing400044China
| | - Jiongyue Hao
- Key Laboratory of Optoelectronic Technology and Systems (Ministry of Education)College of Optoelectronic EngineeringChongqing UniversityChongqing400044China
| | - Juan Du
- State Key Laboratory of High Field Laser PhysicsShanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai201800China
- Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing100049China
| | - Yuxin Leng
- State Key Laboratory of High Field Laser PhysicsShanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai201800China
- Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing100049China
| | - Haiyan Qin
- Center for Chemistry of Nover and High‐Performance Materialsand Department of ChemistryZhejiang UniversityHangzhou310027P. R. China
| | - Xing Lin
- Center for Chemistry of Nover and High‐Performance Materialsand Department of ChemistryZhejiang UniversityHangzhou310027P. R. China
| | - Yue Lin
- Hefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefei230026China
| | - Yuxi Tian
- School of Chemistry and Chemical EngineeringKey Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Key Laboratory of Vehicle Emissions ControlNanjing UniversityNanjing210023China
| | - Miao Zhou
- Key Laboratory of Optoelectronic Technology and Systems (Ministry of Education)College of Optoelectronic EngineeringChongqing UniversityChongqing400044China
| | - Qihua Xiong
- Division of Physics and Applied PhysicsSchool of Physical and Mathematical SciencesNanyang Technological UniversitySingapore637371Singapore
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23
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Wu HL, Li XB, Tung CH, Wu LZ. Semiconductor Quantum Dots: An Emerging Candidate for CO 2 Photoreduction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1900709. [PMID: 31271262 DOI: 10.1002/adma.201900709] [Citation(s) in RCA: 142] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 05/04/2019] [Indexed: 05/24/2023]
Abstract
As one of the most critical approaches to resolve the energy crisis and environmental concerns, carbon dioxide (CO2 ) photoreduction into value-added chemicals and solar fuels (for example, CO, HCOOH, CH3 OH, CH4 ) has attracted more and more attention. In nature, photosynthetic organisms effectively convert CO2 and H2 O to carbohydrates and oxygen (O2 ) using sunlight, which has inspired the development of low-cost, stable, and effective artificial photocatalysts for CO2 photoreduction. Due to their low cost, facile synthesis, excellent light harvesting, multiple exciton generation, feasible charge-carrier regulation, and abundant surface sites, semiconductor quantum dots (QDs) have recently been identified as one of the most promising materials for establishing highly efficient artificial photosystems. Recent advances in CO2 photoreduction using semiconductor QDs are highlighted. First, the unique photophysical and structural properties of semiconductor QDs, which enable their versatile applications in solar energy conversion, are analyzed. Recent applications of QDs in photocatalytic CO2 reduction are then introduced in three categories: binary II-VI semiconductor QDs (e.g., CdSe, CdS, and ZnSe), ternary I-III-VI semiconductor QDs (e.g., CuInS2 and CuAlS2 ), and perovskite-type QDs (e.g., CsPbBr3 , CH3 NH3 PbBr3 , and Cs2 AgBiBr6 ). Finally, the challenges and prospects in solar CO2 reduction with QDs in the future are discussed.
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Affiliation(s)
- Hao-Lin Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xu-Bing Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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Hao J, Liu H, Miao J, Lu R, Zhou Z, Zhao B, Xie B, Cheng J, Wang K, Delville MH. A facile route to synthesize CdSe/ZnS thick-shell quantum dots with precisely controlled green emission properties: towards QDs based LED applications. Sci Rep 2019; 9:12048. [PMID: 31427624 PMCID: PMC6700096 DOI: 10.1038/s41598-019-48469-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 08/02/2019] [Indexed: 11/16/2022] Open
Abstract
In recent, the quantum yield (QY) and stability of green quantum dots (QDs) have been significantly improved. However, most of the progresses were achieved by using alloyed QDs, and the control of green emission QDs still remains challenging. Herein, we report a novel method for synthesizing thick-shell structure quantum dots (TSQDs) with saturated green-emitting where tri-n-octylphosphine (TOP) was used as both ligand and solvent to extract the redundant ions from the QDs surface and remove the lattice imperfections before any surface inorganic layer-by-layer coating. The as-prepared TSQDs demonstrate enhanced luminescent properties including high QY reaching up to 75%, full width at half maximum (FWHM) remaining close to 26 nm and tunable precise emission properties (532 nm), which can be utilized to perform 91% of the International Telecommunication Union (ITU) Recommendation BT. 2020 (Rec. 2020) for high definition and color gamut displays.
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Affiliation(s)
- Junjie Hao
- CNRS, University Bordeaux, ICMCB, UMR 5026, F-33608, Pessac, France
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Haochen Liu
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Jun Miao
- Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, China
| | - Rui Lu
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Ziming Zhou
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Bingxin Zhao
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Bin Xie
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Jiaji Cheng
- School of Materials Science and Engineering, Hubei University, Wuhan, 430062, China.
| | - Kai Wang
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
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25
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Hamachi LS, Yang H, Jen-La Plante I, Saenz N, Qian K, Campos MP, Cleveland GT, Rreza I, Oza A, Walravens W, Chan EM, Hens Z, Crowther AC, Owen JS. Precursor reaction kinetics control compositional grading and size of CdSe 1-x S x nanocrystal heterostructures. Chem Sci 2019; 10:6539-6552. [PMID: 31367306 PMCID: PMC6615248 DOI: 10.1039/c9sc00989b] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 05/14/2019] [Indexed: 12/13/2022] Open
Abstract
We report a method to control the composition and microstructure of CdSe1-x S x nanocrystals by the simultaneous injection of sulfide and selenide precursors into a solution of cadmium oleate and oleic acid at 240 °C. Pairs of substituted thio- and selenoureas were selected from a library of compounds with conversion reaction reactivity exponents (k E) spanning 1.3 × 10-5 s-1 to 2.0 × 10-1 s-1. Depending on the relative reactivity (k Se/k S), core/shell and alloyed architectures were obtained. Growth of a thick outer CdS shell using a syringe pump method provides gram quantities of brightly photoluminescent quantum dots (PLQY = 67 to 90%) in a single reaction vessel. Kinetics simulations predict that relative precursor reactivity ratios of less than 10 result in alloyed compositions, while larger reactivity differences lead to abrupt interfaces. CdSe1-x S x alloys (k Se/k S = 2.4) display two longitudinal optical phonon modes with composition dependent frequencies characteristic of the alloy microstructure. When one precursor is more reactive than the other, its conversion reactivity and mole fraction control the number of nuclei, the final nanocrystal size at full conversion, and the elemental composition. The utility of controlled reactivity for adjusting alloy microstructure is discussed.
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Affiliation(s)
- Leslie S Hamachi
- Department of Chemistry , Columbia University , New York , New York 10027 , USA .
| | - Haoran Yang
- The Molecular Foundry , Lawrence Berkeley National Laboratory , Berkeley , CA 94720 , USA
| | - Ilan Jen-La Plante
- Department of Chemistry , Columbia University , New York , New York 10027 , USA .
| | - Natalie Saenz
- Department of Chemistry , Columbia University , New York , New York 10027 , USA .
| | - Kevin Qian
- Department of Chemistry , Columbia University , New York , New York 10027 , USA .
| | - Michael P Campos
- Department of Chemistry , Columbia University , New York , New York 10027 , USA .
| | - Gregory T Cleveland
- Department of Chemistry , Columbia University , New York , New York 10027 , USA .
| | - Iva Rreza
- Department of Chemistry , Columbia University , New York , New York 10027 , USA .
| | - Aisha Oza
- Department of Chemistry , Barnard College , New York , New York 10027 , USA .
| | - Willem Walravens
- Physics and Chemistry of Nanostructures Group (PCN) , Ghent University , B-9000 Ghent , Belgium
| | - Emory M Chan
- The Molecular Foundry , Lawrence Berkeley National Laboratory , Berkeley , CA 94720 , USA
| | - Zeger Hens
- Physics and Chemistry of Nanostructures Group (PCN) , Ghent University , B-9000 Ghent , Belgium
- Center of Nano and Biophotonics , Ghent University , B-9000 Ghent , Belgium
| | - Andrew C Crowther
- Department of Chemistry , Barnard College , New York , New York 10027 , USA .
| | - Jonathan S Owen
- Department of Chemistry , Columbia University , New York , New York 10027 , USA .
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26
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Cui Y, Zhang R, Yang L, Lv S. Self-carried AIE nanoparticles for in vitro non-invasive long-term imaging. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.10.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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27
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Che W, Zhang L, Li Y, Zhu D, Xie Z, Li G, Zhang P, Su Z, Dou C, Tang BZ. Ultrafast and Noninvasive Long-Term Bioimaging with Highly Stable Red Aggregation-Induced Emission Nanoparticles. Anal Chem 2019; 91:3467-3474. [PMID: 30693764 DOI: 10.1021/acs.analchem.8b05024] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Strongly red luminescent and water-soluble probes are very important for studying biological events and processes. Fluorescent nanoparticles (NPs) built from the aggregation-induced emission luminogen (AIEgen) and amphipathic polymeric matrixes have been considered as promising candidates for bioimaging. However, AIE NPs with long-wavelength absorption suitable for in vivo application are still scarce. In this work, three AIE-active red-emissive BODIPY derivatives with long-wavelength absorption were rationally designed and synthesized. Then three NPs based on these AIEgens exhibit bright red photoluminescence with high fluorescence quantum yield in aqueous media. These NPs uniformly dispersed in water and showed excellent stability and good biocompatibility. They can be readily internalized by HeLa cells, and the staining process is performed by simply shaking the culture with cells for just a few seconds at room temperature, which indicates an ultrafast and easy-to-operate staining protocol. More importantly, long-term tracing in living cells and mouse over 15 days is successfully achieved. The strong fluorescence signals, ultrafast staining procedure, and long-term tracing abilities indicate that these AIE NPs hold great potential for monitoring biological processes.
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Affiliation(s)
- Weilong Che
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry , Northeast Normal University , 5268 Renmin Street , Changchun , Jilin Province 130024 , P. R. China
| | - Liping Zhang
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry , Northeast Normal University , 5268 Renmin Street , Changchun , Jilin Province 130024 , P. R. China
| | - Yuanyuan Li
- State Key Laboratory of Polymer Physics and Chemistry , Changchun Institute of Applied Chemistry Chinese Academy of Sciences , Changchun , 130022 , P. R. China
| | - Dongxia Zhu
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry , Northeast Normal University , 5268 Renmin Street , Changchun , Jilin Province 130024 , P. R. China
| | - Zhigang Xie
- State Key Laboratory of Polymer Physics and Chemistry , Changchun Institute of Applied Chemistry Chinese Academy of Sciences , Changchun , 130022 , P. R. China
| | - Guangfu Li
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry , Northeast Normal University , 5268 Renmin Street , Changchun , Jilin Province 130024 , P. R. China
| | - Pengfei Zhang
- Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon , Hong Kong , China
| | - Zhongmin Su
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry , Northeast Normal University , 5268 Renmin Street , Changchun , Jilin Province 130024 , P. R. China
- School of Chemistry and Environmental Engineering , Changchun University of Science and Technology , Changchun , 130022 , P. R. China
| | - Chuandong Dou
- State Key Laboratory of Polymer Physics and Chemistry , Changchun Institute of Applied Chemistry Chinese Academy of Sciences , Changchun , 130022 , P. R. China
| | - Ben Zhong Tang
- Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon , Hong Kong , China
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28
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Zhang H, Wang F, Kuang Y, Li Z, Lin Q, Shen H, Wang H, Guo L, Li LS. Se/S Ratio-Dependent Properties and Application of Gradient-Alloyed CdSe 1- xS x Quantum Dots: Shell-free Structure, Non-blinking Photoluminescence with Single-Exponential Decay, and Efficient QLEDs. ACS APPLIED MATERIALS & INTERFACES 2019; 11:6238-6247. [PMID: 30698938 DOI: 10.1021/acsami.8b17127] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Colloidal quantum dots (QDs) are promising optical and optoelectronic materials for various applications. The excited state properties are important indexes to assess the quality of QDs and may directly affect their applications. Different from controlling surface engineering (surface ligands, shell thickness, etc.) to adjust excited state properties, high-quality shell-free alloyed CdSe1- xS x (simplified as CdSeS) QDs with controlled excited state properties were synthesized by tuning the composition and using diphenylphosphine as a beneficial additive at a low temperature (∼180 °C). The optimized CdSeS shell-free alloyed QDs (Se/S = 1:8) exhibited excellent optical properties with tuning of the excited state, including single-exponential photoluminescence (PL) decay dynamics, a narrow full width at half maximum of 28 nm, and non-blinking emission behavior (>98% "on" time). Furthermore, all-solution-processed, multilayered quantum dot light-emitting diodes were fabricated using the conventional device structure to assess the performance of QDs with composition-controlled excited states. The best device displayed a maximum luminance of 92,330 cd m-2, a current efficiency of 50.3 cd A-1, and an external quantum efficiency of 14.5%.
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29
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Gao Z, Li Z, Gao Z, Wang F. Supramolecular alternate donor-acceptor copolymers mediated by PtPt metal-metal interactions and their photocatalytic applications. NANOSCALE 2018; 10:14005-14011. [PMID: 29995057 DOI: 10.1039/c8nr03739f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Precise arrangement of the aromatic donor-acceptor units is of paramount importance to dictate the performance of multi-component π-functional materials. Herein a novel strategy has been developed toward alternate donor-acceptor copolymers, by incorporating Pt(ii)Pt(ii) metal-metal interactions for the hetero-complexation process. The proximity of Pt atoms endows the resulting supramolecular copolymers with metal-metal-to-ligand charge-transfer transitions in the visible/NIR region. The signals have been further applied for low-energy visible-light photo-catalysis that is unattainable for the individual species. More interestingly, "on-demand" photo-catalytic efficiency can be achieved by manipulating the reversibility of the supramolecular copolymerization process. Hence, the current work demonstrates the efficiency of fabricating multi-component π-functional materials via the elaborate manipulation of non-covalent driving forces.
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Affiliation(s)
- Zhao Gao
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, China.
| | - Zijian Li
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, China.
| | - Zongchun Gao
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, China.
| | - Feng Wang
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, China.
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30
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Yang C, Zhang G, Feng L, Li B, Li Z, Chen R, Qin C, Gao Y, Xiao L, Jia S. Suppressing the photobleaching and photoluminescence intermittency of single near-infrared CdSeTe/ZnS quantum dots with p-phenylenediamine. OPTICS EXPRESS 2018; 26:11889-11902. [PMID: 29716105 DOI: 10.1364/oe.26.011889] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 04/18/2018] [Indexed: 06/08/2023]
Abstract
Intrinsic photobleaching and photoluminescence (PL) intermittency of single quantum dots (QDs), originating from photo-oxidation and photo-ionization respectively, are roadblocks for most single-dot applications. Here, we effectively suppress the photobleaching and the PL intermittency of single near-infrared emitting QDs with p-phenylenediamine (PPD). The PPD cannot only be used as a high-efficient reducing agent to remove reactive oxygen species around QDs to suppress the photo-oxidation, but can also bond with the surface defect sites of single QDs to reduce electron trap states to suppress the photo-ionization. It is shown that the survival time of single QDs, the on-state probability of PL intensity traces, and the total number of emitted photons are significantly increased for single QDs in PPD compared with that on glass coverslip.
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31
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Tang J, Xia J, Fang M, Bao F, Cao G, Shen J, Evans J, He S. Selective far-field addressing of coupled quantum dots in a plasmonic nanocavity. Nat Commun 2018; 9:1705. [PMID: 29704002 PMCID: PMC5924364 DOI: 10.1038/s41467-018-04077-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 04/03/2018] [Indexed: 01/16/2023] Open
Abstract
Plasmon–emitter hybrid nanocavity systems exhibit strong plasmon–exciton interactions at the single-emitter level, showing great potential as testbeds and building blocks for quantum optics and informatics. However, reported experiments involve only one addressable emitting site, which limits their relevance for many fundamental questions and devices involving interactions among emitters. Here we open up this critical degree of freedom by demonstrating selective far-field excitation and detection of two coupled quantum dot emitters in a U-shaped gold nanostructure. The gold nanostructure functions as a nanocavity to enhance emitter interactions and a nanoantenna to make the emitters selectively excitable and detectable. When we selectively excite or detect either emitter, we observe photon emission predominantly from the target emitter with up to 132-fold Purcell-enhanced emission rate, indicating individual addressability and strong plasmon–exciton interactions. Our work represents a step towards a broad class of plasmonic devices that will enable faster, more compact optics, communication and computation. Plasmonic nanostructures can tailor excitation and emission for quantum emitters, but generally only for a single emitter. In this work, the authors selectively excite and detect one out of two quantum dots coupled to a deep-subwavelength cavity composed of three gold nanorods assembled into a U-shape.
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Affiliation(s)
- Jianwei Tang
- Centre for Optical and Electromagnetic Research, State Key Laboratory of Modern Optical Instrumentation, National Engineering Research Center of Optical Instrumentation, JORCEP, College of Optical Science and Engineering, Zhejiang University, 310058, Hangzhou, China
| | - Juan Xia
- Centre for Optical and Electromagnetic Research, State Key Laboratory of Modern Optical Instrumentation, National Engineering Research Center of Optical Instrumentation, JORCEP, College of Optical Science and Engineering, Zhejiang University, 310058, Hangzhou, China
| | - Maodong Fang
- Centre for Optical and Electromagnetic Research, ZJU-SCNU Joint Center of Photonics, South China Academy of Advanced Optoelectronics, South China Normal University, 510006, Guangzhou, China
| | - Fanglin Bao
- Centre for Optical and Electromagnetic Research, ZJU-SCNU Joint Center of Photonics, South China Academy of Advanced Optoelectronics, South China Normal University, 510006, Guangzhou, China
| | - Guanjun Cao
- Centre for Optical and Electromagnetic Research, ZJU-SCNU Joint Center of Photonics, South China Academy of Advanced Optoelectronics, South China Normal University, 510006, Guangzhou, China
| | - Jianqi Shen
- Centre for Optical and Electromagnetic Research, State Key Laboratory of Modern Optical Instrumentation, National Engineering Research Center of Optical Instrumentation, JORCEP, College of Optical Science and Engineering, Zhejiang University, 310058, Hangzhou, China
| | - Julian Evans
- Centre for Optical and Electromagnetic Research, State Key Laboratory of Modern Optical Instrumentation, National Engineering Research Center of Optical Instrumentation, JORCEP, College of Optical Science and Engineering, Zhejiang University, 310058, Hangzhou, China
| | - Sailing He
- Centre for Optical and Electromagnetic Research, State Key Laboratory of Modern Optical Instrumentation, National Engineering Research Center of Optical Instrumentation, JORCEP, College of Optical Science and Engineering, Zhejiang University, 310058, Hangzhou, China. .,Centre for Optical and Electromagnetic Research, ZJU-SCNU Joint Center of Photonics, South China Academy of Advanced Optoelectronics, South China Normal University, 510006, Guangzhou, China. .,Department of Electromagnetic Engineering, School of Electrical Engineering, Royal Institute of Technology, S-100 44, Stockholm, Sweden.
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Zhang J, Xu B, Tian W, Xie Z. Tailoring the morphology of AIEgen fluorescent nanoparticles for optimal cellular uptake and imaging efficacy. Chem Sci 2018; 9:2620-2627. [PMID: 29675254 PMCID: PMC5892346 DOI: 10.1039/c7sc05130a] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Accepted: 01/15/2018] [Indexed: 12/16/2022] Open
Abstract
The rational design of robust fluorescent organic materials for long-term cell tracing is still challenging, and aggregation-caused quenching of emission is a big limitation of this strategy. Organic dyes with aggregation-induced emission (AIE) can effectively address this problem. Herein, AIEgen-containing nanoparticles, with different morphologies and emission, were prepared by assembling amphiphilic copolymers with an AIEgen. We compared the physical and chemical properties of rod-like and spherical nanoparticles, particularly investigating the effects of the shape on internalization and the imaging effect. The formulated nanoparticles exhibit advantageous features, such as a large Stokes shift, robust stability in physiological conditions, strong fluorescent emission, and photobleaching resistance. Interestingly, the rod-like nanoparticles were internalized more efficiently than their spherical counterparts, and their strong green fluorescence can still be clearly observed even after 15 days in vitro and in vivo. This work demonstrates the great potential of regulating the morphology of nanoparticles to obtain an ideal biological function.
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Affiliation(s)
- Jianxu Zhang
- State Key Laboratory of Polymer Physics and Chemistry , Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , 5625 Renmin Street , Changchun , Jilin 130022 , P. R. China . .,University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Bin Xu
- State Key Laboratory of Supramolecular Structure and Materials , Jilin University , Changchun , 130012 Jilin , P. R. China .
| | - Wenjing Tian
- State Key Laboratory of Supramolecular Structure and Materials , Jilin University , Changchun , 130012 Jilin , P. R. China .
| | - Zhigang Xie
- State Key Laboratory of Polymer Physics and Chemistry , Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , 5625 Renmin Street , Changchun , Jilin 130022 , P. R. China .
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Xu W, Hou X, Meng Y, Meng R, Wang Z, Qin H, Peng X, Chen XW. Deciphering Charging Status, Absolute Quantum Efficiency, and Absorption Cross Section of Multicarrier States in Single Colloidal Quantum Dots. NANO LETTERS 2017; 17:7487-7493. [PMID: 29160715 DOI: 10.1021/acs.nanolett.7b03399] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Upon photo- or electrical-excitation, colloidal quantum dots (QDs) are often found in multicarrier states due to multiphoton absorption, photocharging, or imbalanced carrier injection of the QDs. While many of these multicarrier states are observed in single-dot spectroscopy, their properties are not well studied due to random charging/discharging, emission intensity intermittency, and uncontrolled surface defects of single QDs. Here we report in situ deciphering of the charging status, precisely assessing the absorption cross section, and determining the absolute emission quantum yield of monoexciton and biexciton states for neutral, positively charged, and negatively charged single core/shell CdSe/CdS QDs. We uncover very different photon statistics of the three charge states in single QDs and unambiguously identify their charge signs together with the information on their photoluminescence decay dynamics. We then show their distinct photoluminescence saturation behaviors and evaluate the absolute values of absorption cross sections and quantum efficiencies of monoexcitons and biexcitons. We demonstrate that the addition of an extra hole or electron in a QD not only changes its emission properties but also varies its absorption cross section.
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Affiliation(s)
- Weiwang Xu
- School of Physics, Huazhong University of Science and Technology , Luoyu Road 1037, Wuhan 430074, People's Republic of China
| | - Xiaoqi Hou
- Center for Chemistry of Novel & High-Performance Materials, Department of Chemistry, Zhejiang University , Hangzhou 310027, China
| | - Yongjun Meng
- School of Physics, Huazhong University of Science and Technology , Luoyu Road 1037, Wuhan 430074, People's Republic of China
| | - Renyang Meng
- Center for Chemistry of Novel & High-Performance Materials, Department of Chemistry, Zhejiang University , Hangzhou 310027, China
| | - Zhiyuan Wang
- School of Physics, Huazhong University of Science and Technology , Luoyu Road 1037, Wuhan 430074, People's Republic of 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
| | - Xue-Wen Chen
- School of Physics, Huazhong University of Science and Technology , Luoyu Road 1037, Wuhan 430074, People's Republic of China
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34
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Zhou J, Zhu M, Meng R, Qin H, Peng X. Ideal CdSe/CdS Core/Shell Nanocrystals Enabled by Entropic Ligands and Their Core Size-, Shell Thickness-, and Ligand-Dependent Photoluminescence Properties. J Am Chem Soc 2017; 139:16556-16567. [DOI: 10.1021/jacs.7b07434] [Citation(s) in RCA: 154] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Jianhai Zhou
- Center for Chemistry of Novel
and High-Performance Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P.R. China
| | - Meiyi Zhu
- Center for Chemistry of Novel
and High-Performance Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P.R. China
| | - Renyang Meng
- Center for Chemistry of Novel
and High-Performance Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P.R. China
| | - Haiyan Qin
- Center for Chemistry of Novel
and High-Performance Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P.R. China
| | - Xiaogang Peng
- Center for Chemistry of Novel
and High-Performance Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P.R. China
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35
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Lin X, Dai X, Pu C, Deng Y, Niu Y, Tong L, Fang W, Jin Y, Peng X. Electrically-driven single-photon sources based on colloidal quantum dots with near-optimal antibunching at room temperature. Nat Commun 2017; 8:1132. [PMID: 29070867 PMCID: PMC5656660 DOI: 10.1038/s41467-017-01379-6] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 09/11/2017] [Indexed: 12/01/2022] Open
Abstract
Photonic quantum information requires high-purity, easily accessible, and scalable single-photon sources. Here, we report an electrically driven single-photon source based on colloidal quantum dots. Our solution-processed devices consist of isolated CdSe/CdS core/shell quantum dots sparsely buried in an insulating layer that is sandwiched between electron-transport and hole-transport layers. The devices generate single photons with near-optimal antibunching at room temperature, i.e., with a second-order temporal correlation function at zero delay (g(2)(0)) being <0.05 for the best devices without any spectral filtering or background correction. The optimal g(2)(0) from single-dot electroluminescence breaks the lower g(2)(0) limit of the corresponding single-dot photoluminescence. Such highly suppressed multi-photon-emission probability is attributed to both novel device design and carrier injection/recombination dynamics. The device structure prevents background electroluminescence while offering efficient single-dot electroluminescence. A quantitative model is developed to illustrate the carrier injection/recombination dynamics of single-dot electroluminescence. Single-photon sources are one of the most basic devices for quantum optical experiments and applications. Here, Lin et al. present an electrically driven single-photon source based on solution-processed colloidal quantum dots with near-optimal antibunching at room temperature.
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Affiliation(s)
- Xing Lin
- Center for Chemistry of High-Performance & Novel Materials, State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Xingliang Dai
- Center for Chemistry of High-Performance & Novel Materials, State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Chaodan Pu
- Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Yunzhou Deng
- Center for Chemistry of High-Performance & Novel Materials, State Key Laboratory of Silicon Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Yuan Niu
- Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Limin Tong
- Center for Chemistry of High-Performance & Novel Materials, State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Wei Fang
- Center for Chemistry of High-Performance & Novel Materials, State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Yizheng Jin
- Center for Chemistry of High-Performance & Novel Materials, State Key Laboratory of Silicon Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China.
| | - Xiaogang Peng
- Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China.
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36
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Chistyakov AA, Zvaigzne MA, Nikitenko VR, Tameev AR, Martynov IL, Prezhdo OV. Optoelectronic Properties of Semiconductor Quantum Dot Solids for Photovoltaic Applications. J Phys Chem Lett 2017; 8:4129-4139. [PMID: 28799772 DOI: 10.1021/acs.jpclett.7b00671] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Quantum dot (QD) solids represent a new type of condensed matter drawing high fundamental and applied interest. Quantum confinement in individual QDs, combined with macroscopic scale whole materials, leads to novel exciton and charge transfer features that are particularly relevant to optoelectronic applications. This Perspective discusses the structure of semiconductor QD solids, optical and spectral properties, charge carrier transport, and photovoltaic applications. The distance between adjacent nanoparticles and surface ligands influences greatly electrostatic interactions between QDs and, hence, charge and energy transfer. It is almost inevitable that QD solids exhibit energetic disorder that bears many similarities to disordered organic semiconductors, with charge and exciton transport described by the multiple trapping model. QD solids are synthesized at low cost from colloidal solutions by casting, spraying, and printing. A judicious selection of a layer sequence involving QDs with different size, composition, and ligands can be used to harvest sunlight over a wide spectral range, leading to inexpensive and efficient photovoltaic devices.
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Affiliation(s)
- A A Chistyakov
- National Research Nuclear University "MEPhI" (Moscow Engineering Physics Institute) , Moscow 115409, Russia
| | - M A Zvaigzne
- National Research Nuclear University "MEPhI" (Moscow Engineering Physics Institute) , Moscow 115409, Russia
| | - V R Nikitenko
- National Research Nuclear University "MEPhI" (Moscow Engineering Physics Institute) , Moscow 115409, Russia
| | - A R Tameev
- National Research Nuclear University "MEPhI" (Moscow Engineering Physics Institute) , Moscow 115409, Russia
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences , 31-building 4 Leninsky Prospect, Moscow 119071, Russia
| | - I L Martynov
- National Research Nuclear University "MEPhI" (Moscow Engineering Physics Institute) , Moscow 115409, Russia
| | - O V Prezhdo
- National Research Nuclear University "MEPhI" (Moscow Engineering Physics Institute) , Moscow 115409, Russia
- Department of Chemistry, Department of Physics, and Department of Astronomy, University of Southern California , Los Angeles, California 90089, United States
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37
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Qin H, Meng R, Wang N, Peng X. Photoluminescence Intermittency and Photo-Bleaching of Single Colloidal Quantum Dot. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1606923. [PMID: 28256776 DOI: 10.1002/adma.201606923] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 02/02/2017] [Indexed: 06/06/2023]
Abstract
Photoluminescence (PL) blinking of single colloidal quantum dot (QD)-PL intensity switching between different brightness states under constant excitation-and photo-bleaching are roadblocks for most applications of QDs. This progress report shall treat PL blinking and photo-bleaching both as photochemical events, namely, PL blinking as reversible and photo-bleaching being irreversible ones. Most studies on single-molecule spectroscopy of QDs in literature are related to PL blinking, which invites us to concentrate our discussions on the PL blinking, including its brief history in 20 years, analysis methods, competitive mechanisms and different strategies to battle it. In terms of suppression of the PL blinking, wavefunction confinement-confining photo-generated electron and hole within the core and inner portion of the shell of a core/shell QD-demonstrates significant advantages. This strategy yields nearly non-blinking QDs with their emission peaks covering most part of the visible window. As expected, the resulting QDs from this new strategy also show substantially improved anti-bleaching features.
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Affiliation(s)
- Haiyan Qin
- Center for Chemistry of Novel & High-Performance Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Renyang Meng
- Center for Chemistry of Novel & High-Performance Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Na Wang
- 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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38
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Dai X, Deng Y, Peng X, Jin Y. Quantum-Dot Light-Emitting Diodes for Large-Area Displays: Towards the Dawn of Commercialization. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1607022. [PMID: 28256780 DOI: 10.1002/adma.201607022] [Citation(s) in RCA: 260] [Impact Index Per Article: 37.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 02/02/2017] [Indexed: 05/21/2023]
Abstract
Quantum dots are a unique class of emitters with size-tunable emission wavelengths, saturated emission colors, near-unity luminance efficiency, inherent photo- and thermal- stability and excellent solution processability. Quantum dots have been used as down-converters for back-lighting in liquid-crystal displays to improve color gamut, leading to the booming of quantum-dot televisions in consumer market. In the past few years, efficiency and lifetime of electroluminescence devices based on quantum dots achieved tremendous progress. These encouraging facts foreshadow the commercialization of quantum-dot light-emitting diodes (QLEDs), which promises an unprecedented generation of cost-effective, large-area, energy-saving, wide-color-gamut, ultra-thin and flexible displays. Here we provide a Progress Report, covering interdisciplinary aspects including material chemistry of quantum dots and charge-transporting layers, optimization and mechanism studies of prototype devices and processing techniques to produce large-area and high-resolution red-green-blue pixel arrays. We also identify a few key challenges facing the development of active-matrix QLED displays.
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Affiliation(s)
- Xingliang Dai
- Center for Chemistry of High-Performance & Novel Materials, State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, People's Republic of China
| | - Yunzhou Deng
- Center for Chemistry of High-Performance & Novel Materials, State Key Laboratory of Silicon Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, People's Republic of China
| | - Xiaogang Peng
- Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, People's Republic of China
| | - Yizheng Jin
- Center for Chemistry of High-Performance & Novel Materials, State Key Laboratory of Silicon Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, People's Republic of China
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39
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Pu C, Qin H, Gao Y, Zhou J, Wang P, Peng X. Synthetic Control of Exciton Behavior in Colloidal Quantum Dots. J Am Chem Soc 2017; 139:3302-3311. [DOI: 10.1021/jacs.6b11431] [Citation(s) in RCA: 164] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Chaodan Pu
- Center for Chemistry of Novel & High-Performance Materials, and Department of Chemistry, Zhejiang University, Hangzhou 310027, PR China
| | - Haiyan Qin
- Center for Chemistry of Novel & High-Performance Materials, and Department of Chemistry, Zhejiang University, Hangzhou 310027, PR China
| | - Yuan Gao
- Center for Chemistry of Novel & High-Performance Materials, and Department of Chemistry, Zhejiang University, Hangzhou 310027, PR China
| | - Jianhai Zhou
- Center for Chemistry of Novel & High-Performance Materials, and Department of Chemistry, Zhejiang University, Hangzhou 310027, PR China
| | - Peng Wang
- Center for Chemistry of Novel & High-Performance Materials, and Department of Chemistry, Zhejiang University, Hangzhou 310027, PR China
| | - Xiaogang Peng
- Center for Chemistry of Novel & High-Performance Materials, and Department of Chemistry, Zhejiang University, Hangzhou 310027, PR China
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40
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Meng R, Qin H, Niu Y, Fang W, Yang S, Lin X, Cao H, Ma J, Lin W, Tong L, Peng X. Charging and Discharging Channels in Photoluminescence Intermittency of Single Colloidal CdSe/CdS Core/Shell Quantum Dot. J Phys Chem Lett 2016; 7:5176-5182. [PMID: 27973911 DOI: 10.1021/acs.jpclett.6b02448] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Understanding photoluminescence (PL) intermittency of single quantum dots (QDs) (intensity blinking by randomly switching between distinguishable brightness states under continuous excitation) has been a long-standing fundamental challenge and potential roadblock for their applications. Here we introduce a new analysis method for single-molecule spectroscopy that treats the blinking as photochemical/chemical processes (switching between neutral/bright and charged/dim states). It uncovers the channels for charging (bright to dim) and discharging (dim to bright) involved in PL blinking of single CdSe/CdS core/shell QDs. Both charging and discharging of the single CdSe/CdS core/shell QD possess a photochemical channel (∼10-5 to 10-6 events/photon) that linearly depends on excitation in both single- and multi-exciton regime. These two linear channels coupled to a spontaneous discharging channel (∼2 events/s) to dictate the QDs from nonblinking to gradually blinking under increasing excitation. For high-quality CdSe/CdS core/shell QDs, Auger ionization of multiexciton for both charging and discharging is negligible.
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Affiliation(s)
- Renyang Meng
- 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
| | - Yuan Niu
- Center for Chemistry of Novel & High-Performance Materials, Department of Chemistry, Zhejiang University , Hangzhou 310027, China
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University , Hangzhou 310027, China
| | - Wei Fang
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University , Hangzhou 310027, China
| | - Sen Yang
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University , Hangzhou 310027, China
| | - Xing Lin
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University , Hangzhou 310027, China
| | - Hujia Cao
- Center for Chemistry of Novel & High-Performance Materials, Department of Chemistry, Zhejiang University , Hangzhou 310027, China
| | - Junliang Ma
- Center for Chemistry of Novel & High-Performance Materials, Department of Chemistry, Zhejiang University , Hangzhou 310027, China
| | - Wanzhen Lin
- Center for Chemistry of Novel & High-Performance Materials, Department of Chemistry, Zhejiang University , Hangzhou 310027, China
| | - Limin Tong
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, 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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