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Chen Y, Ge F, Lai Y, Wang L, Zhao X, Wang R, Peng S, Wu XJ, Zhou Y. A Multistate Thermoresponsive Smart Window Based on a Multifunctional Luminescent Solar Concentrator. ACS APPLIED MATERIALS & INTERFACES 2024; 16:14072-14081. [PMID: 38442356 DOI: 10.1021/acsami.3c19307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
Conventional luminescent solar concentrators (LSCs) usually only have the ability to absorb solar energy and convert it to electricity but are not able to regulate the transmitted light. Herein, a multistate thermoresponsive smart window (SW) based on LSC has been fabricated, in which the stimuli-responsive host layer consists of polydimethylsiloxane (PDMS) and ethylene glycol solution (EGS) microdroplets stacking with LSC layer-based on near-infrared (NIR) CuInSe2-xSx/ZnS core/shell quantum dots (QDs) and PDMS matrix. As-synthesized CISSe/ZnS QDs with broad NIR absorption in LSC exhibit controllable emission spectra over 833-1088 nm and high photoluminescence (PL) quantum yield from 45 to 83%. Coupling with Si solar cells as a reference, optimized LSC-SW devices with dimensions of 5 × 5 × 0.9 cm3 exhibit higher power conversion efficiency (PCE) of 1.19-1.36% with increased temperature from 0 to 50 °C than those of sole LSC and SW devices. The corresponding visible light transmissions are regulated from 75.1 to 48.1% accordingly. The improvement of PCEs in an opaque state is mainly due to enhanced absorption of QDs originating from rescattered photons from the EGS/PDMS layer, leading to more emitted photons reaching photovoltaics. This work is expected to bring up new opportunities for applications in greenhouses, building facades, and energy-efficient smart windows.
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Affiliation(s)
- Yiqing Chen
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Feiyue Ge
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yueling Lai
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Lianju Wang
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Xianglong Zhao
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Ruilin Wang
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, P. R. China
- Engineering Research Center of Alternative Energy Materials and Devices, Ministry of Education, Chengdu 610065, P. R. China
| | - Shou Peng
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Xue-Jun Wu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yufeng Zhou
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, P. R. China
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Ebrahim F, Al-Hartomy O, Wageh S. Cadmium-Based Quantum Dots Alloyed Structures: Synthesis, Properties, and Applications. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5877. [PMID: 37687569 PMCID: PMC10488842 DOI: 10.3390/ma16175877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/22/2023] [Accepted: 07/24/2023] [Indexed: 09/10/2023]
Abstract
Cadmium-based alloyed quantum dots are one of the most popular metal chalcogenides in both the industrial and research fields owing to their extraordinary optical and electronic properties that can be manipulated by varying the compositional ratio in addition to size control. This report aims to cover the main information concerning the synthesis techniques, properties, and applications of Cd-based alloyed quantum dots. It provides a comprehensive overview of the most common synthesis methods for these QDs, which include hot injection, co-precipitation, successive ionic layer adsorption and reaction, hydrothermal, and microwave-assisted synthesis methods. This detailed literature highlights the optical and structural properties of both ternary and quaternary quantum dots. Also, this review provides the high-potential applications of various alloyed quantum dots.
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Affiliation(s)
- Fadia Ebrahim
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (F.E.); (O.A.-H.)
- Department of Physics, College of Applied Science, Umm Al-Qura University, Makkah 21955, Saudi Arabia
- K. A. CARE Energy Research and Innovation Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Omar Al-Hartomy
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (F.E.); (O.A.-H.)
| | - S. Wageh
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (F.E.); (O.A.-H.)
- K. A. CARE Energy Research and Innovation Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Physics and Engineering Mathematics Department, Faculty of Electronic Engineering, Menoufia University, Menouf 32952, Egypt
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Sreenan B, Lee B, Wan L, Zeng R, Zhao J, Zhu X. Review of Mn-Doped Semiconductor Nanocrystals for Time-Resolved Luminescence Biosensing/Imaging. ACS APPLIED NANO MATERIALS 2022; 5:17413-17435. [PMID: 36874078 PMCID: PMC9980291 DOI: 10.1021/acsanm.2c04337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Colloidal semiconductor nanocrystals (NCs) have been developed for decades and are widely applied in biosensing/imaging. However, their biosensing/imaging applications are mainly based on luminescence-intensity measurement, which suffers from autofluorescence in complex biological samples and thus limits the biosensing/imaging sensitivities. It is expected for these NCs to be further developed to gain luminescence features that can overcome sample autofluorescence. On the other hand, time-resolved luminescence measurement utilizing long-lived-luminescence probes is an efficient technique to eliminate short-lived autofluorescence of samples while recording time-resolved luminescence of the probes for signal measurement after pulsed excitation from a light source. Despite time-resolved measurement being very sensitive, the optical limitations of many of the current long-lived-luminescence probes cause time-resolved measurement to be generally performed in laboratories with bulky and costly instruments. In order to apply highly sensitive time-resolved measurement for in-field or point-of-care (POC) testing, it is essential to develop probes possessing high brightness, low-energy (visible-light) excitation, and long lifetimes of up to milliseconds. Such desired optical features can significantly simplify the design criteria of time-resolved measurement instruments and facilitate the development of low-cost, compact, sensitive instruments for in-field or POC testing. Mn-doped NCs have recently been in rapid development and provide a strategy to solve the challenges faced by both colloidal semiconductor NCs and time-resolved luminescence measurement. In this review, we outline the major achievements in the development of Mn-doped binary and multinary NCs, with emphasis on their synthesis approaches and luminescence mechanisms. Specifically, we demonstrate how researchers approached these obstacles to achieve the aforementioned desired optical properties on the basis of the progressive understanding of Mn emission mechanisms. Afterward, we review representative applications of Mn-doped NCs in time-resolved luminescence biosensing/imaging and present the potential of Mn-doped NCs in advancing time-resolved luminescence biosensing/imaging for in-field or POC testing.
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Affiliation(s)
- Benjamin Sreenan
- Department of Electrical and Biomedical Engineering, University of Nevada-Reno, Reno, Nevada 89557, United States
| | - Bryan Lee
- Department of Electrical and Biomedical Engineering, University of Nevada-Reno, Reno, Nevada 89557, United States
| | - Li Wan
- Department of Physics, Wenzhou University, Wenzhou 325035, China
| | - Ruosheng Zeng
- School of Physical Science and Technology, Guangxi University, Nanning 530004, China
| | - Jialong Zhao
- School of Physical Science and Technology, Guangxi University, Nanning 530004, China
| | - Xiaoshan Zhu
- Department of Electrical and Biomedical Engineering, University of Nevada-Reno, Reno, Nevada 89557, United States
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Optical Properties of Mn-Doped CuGa(In)S-ZnS Nanocrystals (NCs): Effects of Host NC and Mn Concentration. NANOMATERIALS 2022; 12:nano12060994. [PMID: 35335807 PMCID: PMC8956066 DOI: 10.3390/nano12060994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 03/14/2022] [Accepted: 03/15/2022] [Indexed: 11/17/2022]
Abstract
Time-gated fluorescence measurement (TGFM) using long-life fluorescence probes is a highly sensitive fluorescence-measurement technology due to the inherently high signal-to-background ratio. Although many probes for TGFM such as luminescent-metal-complex probes and lanthanide-doped nanoparticles are in development, they generally need sophisticated/expensive instruments for biosensing/imaging applications. Probes possessing high brightness, low-energy (visible light) excitation, and long lifetimes up to milliseconds of luminescence, are highly desired in order to simplify the optical and electronic design of time-gated instruments (e.g., adopting non-UV-grade optics or low-speed electronics), lower the instrument complexity and cost, and facilitate broader applications of TGFM. In this work, we developed Mn-doped CuGa(In)S-ZnS nanocrystals (NCs) using simple and standard synthetic steps to achieve all the desired optical features in order to investigate how the optical properties (fluorescence/absorption spectra, brightness, and lifetimes) of the Mn-doped NCs are affected by different host NCs and Mn concentrations in host NCs. With optimal synthetic conditions, a library of Mn-doped NCs was achieved that possessed high brightness (up to 47% quantum yield), low-energy excitation (by 405 nm visible light), and long lifetimes (up to 3.67 ms). Additionally, the time-domain fluorescence characteristics of optimal Mn-doped NCs were measured under pulsed 405 nm laser excitation and bandpass-filter-based emission collection. The measurement results indicate the feasibility of these optimal Mn-doped NCs in TGFM-based biosensing/imaging.
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Crystal structure and photo-physical properties in a perovskite–type semiconducting hybrid phase: {(m-C6H7N2O2)2CdCl4}n. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Lee B, Hegseth T, Song Y, Zhao J, Zhu X. Mn-Doped AgZnInS/ZnS Nanocrystals (NCs): Effects of Zn Etching on the NC Optical Properties. OPTICAL MATERIALS 2022; 123:111941. [PMID: 35068693 PMCID: PMC8775054 DOI: 10.1016/j.optmat.2021.111941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Mn-doped I(II)-III-VI NCs (e.g., Mn-doped AgZnInS/ZnS NCs) possessing low-energy excitation, high brightness and long fluorescence lifetimes have been desired for time-gated fluorescence biosensing/imaging. In this type of NCs, their optical properties are significantly affected by the microscopic interactions between Mn and Mn and between Mn and host NC, the compositions of NCs, and the defects in NCs. On the other hand, it is known that Zn etching to core I(II)-III-VI NCs in NC synthesis can significantly enhance the NC brightness because Zn can exchange surface atoms (e.g., Ag and In) in NCs to minimize NC surface-defects. But for Mn-doped I(II)-III-VI NCs, Zn etching could etch out not only surface-atoms of host NCs (e.g., Ag and In) but also Mn in NCs. As a result, it could significantly affect the NC compositions and the microscopic interactions between Mn and Mn as well as between Mn and host NC, and thus the optical properties of NCs (like lifetime and absorption/emission spectra). Therefore, it is needed to investigate how Zn etching would affect the optical properties of such Mn-doped NCs. In this study, a series of Mn-doped AgZnInS NCs with different Mn doping levels were prepared through nucleation doping, and then Zn etching was applied to etch these core NCs. To identify the effects of Zn etching on NC optical properties, ZnS coating (a different ZnS shelling approach by injecting Zn precursor and S precursor alternately in synthesis) was performed on the same Mn:AgZnInS NCs, and the optical properties of NCs with these two different ZnS shelling approaches were compared. Experimental results showed that under appropriate Mn doping levels in synthesis, Zn etching instead of ZnS coating can produce low-energy excitable NCs with higher QYs and longer lifetimes, which would further facilitate the use of such NCs in time-gated fluorescence measurement. To understand the reasons for the different optical properties under different ZnS shelling approaches, the material characteristics of the prepared NCs were further measured/analyzed and the possible fluorescence mechanisms were discussed.
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Affiliation(s)
- Bryan Lee
- Department of Electrical and Biomedical Engineering,
University of Nevada Reno, NV, USA
- Biomedical Engineering Program, University of Nevada Reno,
NV, USA
| | - Tristan Hegseth
- Department of Electrical and Biomedical Engineering,
University of Nevada Reno, NV, USA
| | - Yusheng Song
- School of Physical Science and Technology, Guangxi
University, Guangxi, China
| | - Jialong Zhao
- School of Physical Science and Technology, Guangxi
University, Guangxi, China
| | - Xiaoshan Zhu
- Department of Electrical and Biomedical Engineering,
University of Nevada Reno, NV, USA
- Biomedical Engineering Program, University of Nevada Reno,
NV, USA
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Ming SK, Taylor RA, McNaughter PD, Lewis DJ, O’Brien P. Tunable structural and optical properties of Ag xCu yInS 2 colloidal quantum dots. NEW J CHEM 2022. [DOI: 10.1039/d2nj03169h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein is discussed tunable absorption and emission properties of AgxCuyInS2 quantum dots involving wurtzite to chalcopyrite phase transformation dependent on Ag+ dopant content.
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Affiliation(s)
- Shanna-Kay Ming
- Department of Chemistry, The University of the West Indies, St. Augustine, Trinidad and Tobago
| | - Richard A. Taylor
- Department of Chemistry, The University of the West Indies, St. Augustine, Trinidad and Tobago
| | - Paul D. McNaughter
- Department of Chemistry, University of Manchester, Manchester M13 9PL, UK
| | - David J. Lewis
- Department of Materials, University of Manchester, Manchester M13 9PL, UK
| | - Paul O’Brien
- Department of Chemistry, University of Manchester, Manchester M13 9PL, UK
- Department of Materials, University of Manchester, Manchester M13 9PL, UK
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8
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Feng Y, Su Y, Liu R, Lv Y. Engineering activatable nanoprobes based on time-resolved luminescence for chemo/biosensing. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116283] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Ming SK, Taylor RA, McNaughter PD, Lewis DJ, Leontiadou MA, O'Brien P. Tunable structural and optical properties of CuInS 2 colloidal quantum dots as photovoltaic absorbers. RSC Adv 2021; 11:21351-21358. [PMID: 35478826 PMCID: PMC9034010 DOI: 10.1039/d1ra03659a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 06/09/2021] [Indexed: 11/30/2022] Open
Abstract
Facile phase selective synthesis of CuInS2 (CIS) nanostructures has been an important pursuit because of the opportunity for tunable optical properties of the phases, and in this respect is investigated by hot-injection colloidal synthesis in this study. Relatively monodispersed colloidal quantum dots (3.8–5.6 nm) of predominantly chalcopyrite structure synthesized at 140, 180 and 210 °C over 60 minutes from copper(ii) hexafluoroacetylacetonate hydrate and indium(iii) diethyldithiocarbamate precursors exhibit temperature-dependent structural variability. The slightly off-stoichiometric quantum dots are copper-deficient in which copper vacancies , indium interstitials , indium–copper anti-sites and surface trapping states are likely implicated in broad photoluminescence emission with short radiative lifetimes, τ1, τ2, and τ3 of 1.5–2.1, 7.8–13.9 and 55.2–70.8 ns and particle-size dependent tunable band gaps between 2.25 and 2.32 eV. Further structural and optical tunability (Eg between 2.03 and 2.28 eV) is achieved with possible time-dependent wurtzite to chalcopyrite phase transformation at 180 °C likely involving a dynamic interplay of kinetic and thermodynamic factors. We report the facile hot-injection colloidal synthesis of near-stoichiometric CuInS2 quantum dots at varying reaction times and temperatures which exhibit both optical and structural tunability with implications for enhanced photovoltaic utility.![]()
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Affiliation(s)
- Shanna-Kay Ming
- Department of Chemistry, University of the West Indies St. Augustine Trinidad and Tobago
| | - Richard A Taylor
- Department of Chemistry, University of the West Indies St. Augustine Trinidad and Tobago
| | | | - David J Lewis
- Department of Materials, University of Manchester Manchester M13 9PL UK
| | - Marina A Leontiadou
- Department of Physics and Astronomy & Photon Science Institute, The University of Manchester Manchester M13 9PL UK
| | - Paul O'Brien
- Department of Chemistry, University of Manchester M13 BB UK.,Department of Materials, University of Manchester Manchester M13 9PL UK
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Long Z, Zhang W, Tian J, Chen G, Liu Y, Liu R. Recent research on the luminous mechanism, synthetic strategies, and applications of CuInS2 quantum dots. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01228a] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We discuss the synthesis and luminescence mechanisms of CuInS2 QDs, the strategies to improve their luminous performance and their potential application in light-emitting devices, solar energy conversion, and the biomedical field.
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Affiliation(s)
- Zhiwei Long
- National Engineering Research Center for Rare Earth Materials
- General Research Institute for Nonferrous Metals
- Grirem Advanced Materials Co. Ltd
- Beijing
- P. R China
| | - Wenda Zhang
- National Engineering Research Center for Rare Earth Materials
- General Research Institute for Nonferrous Metals
- Grirem Advanced Materials Co. Ltd
- Beijing
- P. R China
| | - Junhang Tian
- National Engineering Research Center for Rare Earth Materials
- General Research Institute for Nonferrous Metals
- Grirem Advanced Materials Co. Ltd
- Beijing
- P. R China
| | - Guantong Chen
- National Engineering Research Center for Rare Earth Materials
- General Research Institute for Nonferrous Metals
- Grirem Advanced Materials Co. Ltd
- Beijing
- P. R China
| | - Yuanhong Liu
- National Engineering Research Center for Rare Earth Materials
- General Research Institute for Nonferrous Metals
- Grirem Advanced Materials Co. Ltd
- Beijing
- P. R China
| | - Ronghui Liu
- National Engineering Research Center for Rare Earth Materials
- General Research Institute for Nonferrous Metals
- Grirem Advanced Materials Co. Ltd
- Beijing
- P. R China
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Ji S, Yuan X, Cao S, Ji W, Zhang H, Wang Y, Li H, Zhao J, Zou B. Near-Unity Red Mn 2+ Photoluminescence Quantum Yield of Doped CsPbCl 3 Nanocrystals with Cd Incorporation. J Phys Chem Lett 2020; 11:2142-2149. [PMID: 32108473 DOI: 10.1021/acs.jpclett.0c00372] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Although Mn2+ doping in semiconductor nanocrystals (NCs) has been studied for nearly three decades, the near 100% photoluminescence (PL) quantum yield (QY) of Mn2+ emission has never been realized so far. Herein, greatly improved PL QYs of Mn2+ emissions are reported in Mn2+-doped CsPbCl3 NCs with various Mn2+ doping concentrations after CdCl2 post-treatment at room temperature. Specifically, the near-unity QY and near single-exponential decay of red Mn2+ emission peaking at 627 nm in doped CsPbCl3 NCs are obtained for the first time. The temperature dependence of steady-state and time-resolved PL spectra reveals that the CdCl2 post-treatment significantly reduces the nonradiative defect states and enhances the energy transfer from host to Mn2+ ions. Moreover, the Mn2+:CsPbCl3 NCs after CdCl2 post-treatment exhibit robust stability and high PL QYs after multipurification. The results will provide an effective route to obtain doped perovskite NCs with high performance for white lighting emitting diodes.
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Affiliation(s)
- Sihang Ji
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
- Department of Physics, Jilin University, Changchun 130023, China
| | - Xi Yuan
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Sheng Cao
- Center on Nano-energy Research, School of Physical Science and Technology, and Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, China
| | - Wenyu Ji
- Department of Physics, Jilin University, Changchun 130023, China
| | - Hanzhuang Zhang
- Department of Physics, Jilin University, Changchun 130023, China
| | - Yunjun Wang
- Suzhou Xingshuo Nanotech Co., Ltd. (Mesolight), Suzhou 215123, China
| | - Haibo Li
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Jialong Zhao
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
- Center on Nano-energy Research, School of Physical Science and Technology, and Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, China
| | - Bingsuo Zou
- Center on Nano-energy Research, School of Physical Science and Technology, and Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, China
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Chetty SS, Praneetha S, Vadivel Murugan A, Govarthanan K, Verma RS. Human Umbilical Cord Wharton's Jelly-Derived Mesenchymal Stem Cells Labeled with Mn 2+ and Gd 3+ Co-Doped CuInS 2-ZnS Nanocrystals for Multimodality Imaging in a Tumor Mice Model. ACS APPLIED MATERIALS & INTERFACES 2020; 12:3415-3429. [PMID: 31875453 DOI: 10.1021/acsami.9b19054] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Mesenchymal stem cell (MSCs) therapy has recently received profound interest as a targeting platform in cancer theranostics because of inherent tumor-homing abilities. However, the terminal tracking of MSCs engraftment by fluorescent in situ hybridization, immuno-histochemistry, and flow-cytometry techniques to translate into clinics is still challenging because of a dearth of inherent MSCs-specific markers and FDA approval for genetic modifications of MSCs. To address this challenge, a cost-effective noninvasive imaging technology based on multifunctional nanocrystals (NCs) with enhanced detection sensitivity, spatial-temporal resolution, and deep-tissue diagnosis is needed to be developed to track the transplanted stem cells. A hassle-free labeling of human umbilical cord Wharton's Jelly (WJ)-derived MSCs with Mn2+ and Gd3+ co-doped CuInS2-ZnS (CIS-ZMGS) NCs has been demonstrated in 2 h without requiring an electroporation process or transfection agents. It has been found that WJ-MSCs labeling did not affect their multilineage differentiation (adipocyte, osteocyte, chondrocyte), immuno-phenotypes (CD44+, CD105+, CD90+), protein (β-actin, vimentin, CD73, α-SMCA), and gene expressions. Interestingly, CIS-ZMGS-NCs-labeled WJ-MSCs exhibit near-infrared (NIR) fluorescence with a quantum yield of 84%, radiant intensity of ∼3.999 × 1011 (p/s/cm2/sr)/(μW/cm2), magnetic relaxivity (longitudinal r1 = 2.26 mM-1 s-1, transverse r2 = 16.47 mM-1 s-1), and X-ray attenuation (78 HU) potential for early noninvasive multimodality imaging of a subcutaneous melanoma in B16F10-tumor-bearing C57BL/6 mice in 6 h. The ex vivo imaging and inductively coupled plasma mass-spectroscopy analyses of excised organs along with confocal microscopy and immunofluorescence of tumor results also significantly confirmed the positive tropism of CIS-ZMGS-NCs-labeled WJ-MSCs in the tumor environment. Hence, we propose the magnetofluorescent CIS-ZMGS-NCs-labeled WJ-MSCs as a next-generation nanobioprobe of three commonly used imaging modalities for stem cell-assisted anticancer therapy and tracking tissue/organ regenerations.
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Affiliation(s)
- Shashank Shankar Chetty
- Advanced Functional Nanostructured Materials Laboratory, Centre for Nanoscience and Technology, Madanjeet School of Green Energy Technologies , Pondicherry University (A Central University) , Puducherry 605014 , India
| | - Selvarasu Praneetha
- Advanced Functional Nanostructured Materials Laboratory, Centre for Nanoscience and Technology, Madanjeet School of Green Energy Technologies , Pondicherry University (A Central University) , Puducherry 605014 , India
| | - Arumugam Vadivel Murugan
- Advanced Functional Nanostructured Materials Laboratory, Centre for Nanoscience and Technology, Madanjeet School of Green Energy Technologies , Pondicherry University (A Central University) , Puducherry 605014 , India
| | - Kavitha Govarthanan
- Stem Cell and Molecular Biology Laboratory, Bhupat and Jyoti Mehta School of Biosciences, Department of Biotechnology , Indian Institute of Technology-Madras (IIT-M) , Chennai 600036 , India
| | - Rama Shanker Verma
- Stem Cell and Molecular Biology Laboratory, Bhupat and Jyoti Mehta School of Biosciences, Department of Biotechnology , Indian Institute of Technology-Madras (IIT-M) , Chennai 600036 , India
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Makkar M, Saha A, Khalid S, Viswanatha R. Thermodynamics of Dual Doping in Quantum Dots. J Phys Chem Lett 2019; 10:1992-1998. [PMID: 30945549 DOI: 10.1021/acs.jpclett.9b00606] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Dual doping is a powerful way to tailor the properties of semiconductor quantum dots (QDs) arising out of host-dopant and dopant-dopant interactions. Nevertheless, it has seldom been explored due to a variety of thermodynamic challenges, such as the differential bonding strength and diffusion constant within the host matrix that integrates with the host in dissimilar ways. This work discusses the challenges involved in administering them within the constraints of one host under similar conditions of temperature, time, and chemical parameters such as solubility and reactivity using CoPt-doped CdS QDs as a model system. In addition, the various forces in play, such as Kirkendall diffusion, solid- and liquid-state diffusion, hard acid soft base interaction with the host, and the effect of lattice strain due to lattice mismatch, are studied to understand the feasibility of the core to doped transformation. These findings suggest a potential approach for manipulating the properties of semiconductors by dual doping engineering.
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Affiliation(s)
| | | | - Syed Khalid
- Brookhaven National Laboratory , Upton , New York 11973-5000 , United States
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Kim JH, Kim KH, Yoon SY, Kim Y, Lee SH, Kim HS, Yang H. Tunable Emission of Bluish Zn-Cu-Ga-S Quantum Dots by Mn Doping and Their Electroluminescence. ACS APPLIED MATERIALS & INTERFACES 2019; 11:8250-8257. [PMID: 30698949 DOI: 10.1021/acsami.8b20894] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
On the basis of bluish-emitting double-shelled quantum dots (QDs) of Zn-Cu-Ga-S (ZCGS)/ZnS/ZnS, Mn doping into ZCGS host with different Mn/Cu concentrations is implemented via surface adsorption and lattice diffusion. The resulting double-shelled Mn-doped ZCGS (ZCGS/Mn) QDs exhibit a distinct Mn2+ 4T1-6A1 emission as a consequence of effective lattice incorporation simultaneously with host intragap states-involving emissions of free-to-bound and donor-acceptor pair recombinations. The relative contribution of Mn emission to the overall photoluminescence (PL) is consistently proportional to its concentration, resulting in tunable PL from bluish, white, to reddish white. Regardless of Mn doping and its concentration, all QDs possess high PL quantum yield levels of 74-79%. Those undoped and doped QDs are then employed as an emitting layer (EML) of all-solution-processed QD-light-emitting diodes (QLEDs) with hybrid charge transport layers and their electroluminescence (EL) is compared. Compared to undoped QDs, doped analogues give rise to a huge spectral disparity of EL versus PL, specifically showing a near-complete quenching of Mn2+ EL. This unexpected observation is rationalized primarily by considering unbalanced carrier injection to QD EML on the basis of energetic alignment of the present QLED and rapid trapping of holes injected at intragap states of QDs.
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Affiliation(s)
- Jong-Hoon Kim
- Department of Materials Science and Engineering , Hongik University , Seoul 04066 , Korea
| | - Kyung-Hye Kim
- Department of Materials Science and Engineering , Hongik University , Seoul 04066 , Korea
| | - Suk-Young Yoon
- Department of Materials Science and Engineering , Hongik University , Seoul 04066 , Korea
| | - Yuri Kim
- Department of Materials Science and Engineering , Hongik University , Seoul 04066 , Korea
| | - Sun-Hyoung Lee
- Department of Materials Science and Engineering , Hongik University , Seoul 04066 , Korea
| | - Hyun-Sik Kim
- Department of Materials Science and Engineering , Hongik University , Seoul 04066 , Korea
| | - Heesun Yang
- Department of Materials Science and Engineering , Hongik University , Seoul 04066 , Korea
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15
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Fei L, Yuan X, Hua J, Ikezawa M, Zeng R, Li H, Masumoto Y, Zhao J. Enhanced luminescence and energy transfer in Mn 2+ doped CsPbCl 3-xBr x perovskite nanocrystals. NANOSCALE 2018; 10:19435-19442. [PMID: 30310895 DOI: 10.1039/c8nr05492d] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Manganese ion (Mn2+) doped CsPbCl3-xBrx nanocrystals (NCs) with dual emissions have emerged as a promising candidate for white light emitting devices. The luminescence properties of Mn2+ doped CsPbCl3-xBrx NCs were studied by steady-state and time-resolved photoluminescence (PL) spectroscopy at temperature ranging from 80 to 300 K. The Mn2+ doped NCs with varied Br compositions were synthesized by means of Cl-to-Br anion exchange. The obtained doped NCs exhibited a tunable narrow band-edge emission band from 405 to 500 nm with a lengthened PL lifetime and a wide Mn2+ emission band at 600 nm with a shortened PL lifetime as the Br composition increases. It was interestingly found that PL intensity of the Mn2+ emission band was significantly enhanced by replacing Cl ions with Br and reached the maximum value in Mn2+:CsPbCl2.15Br0.85 NCs. Especially at low temperature (80 K), the intensity ratios of Mn2+ emission to band-edge emission increased ∼80 times in Mn2+:CsPbCl2.15Br0.85 NCs, compared with Mn2+:CsPbCl3 ones. The temperature-dependent energy-transfer efficiencies of Mn2+:CsPbCl3 and Mn2+:CsPbCl2.15Br0.85 NCs from excitons in NCs to Mn2+ ions were obtained. The PL enhancement of Mn2+ in CsPbCl3-xBrx NCs was attributed to Br composition-dependent exciton energy transfer to Mn2+.
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Affiliation(s)
- Liling Fei
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping 136000, China.
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16
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Zaeimian MS, Gallian B, Harrison C, Wang Y, Zhao J, Zhu X. Mn Doped AZIS/ZnS Nanocrystals (NCs): Effects of Ag and Mn Levels on NC Optical Properties. JOURNAL OF ALLOYS AND COMPOUNDS 2018; 765:236-244. [PMID: 30008517 PMCID: PMC6039121 DOI: 10.1016/j.jallcom.2018.06.173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this work, Mn-doped AZIS/ZnS NCs were prepared using a nucleation doping approach with the tuning of Mn and Ag levels in their synthesis. The optical properties of Mn:AZIS/ZnS NCs are found to be significantly affected by Ag and Mn levels. Specifically, more Ag and Mn atoms in Mn:AZIS/ZnS NCs cause their fluorescence red-shift, and as the Ag or Mn level reaches a high threshold, the fluorescence lifetime of Mn:AZIS/ZnS NC has a significant drop. The reasons for the effects of Mn and Ag levels on NC optical properties were explored and discussed. Through this study, it is also found that with certain Ag and Mn levels in synthesis, some Mn:AZIS/ZnS NCs present optimal optical properties including high brightness (QY > 40%), long fluorescence lifetime (> 1.2 ms), low energy for excitation (excitable at 405 nm), and no reabsorption. The feasibility of the optimized NCs for time-gated fluorescence measurement using a portable/compact instrument was further demonstrated, which indicates the application potential of the NCs in time-gated biosensing including point-of-care testing. Notably, this study also discloses that Mn:AZIS/ZnS NCs with different lifetimes can be achieved by tuning Mn and Ag levels in synthesis, which may further broaden the applications of Mn:AZIS/ZnS NCs in multiplexing detection/measurement.
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Affiliation(s)
- Masoumeh Saber Zaeimian
- Department of Electrical and Biomedical Engineering, University of Nevada Reno, NV, USA
- Biomedical Engineering Program, University of Nevada Reno, NV, USA
| | - Brandon Gallian
- Department of Electrical and Biomedical Engineering, University of Nevada Reno, NV, USA
- Biomedical Engineering Program, University of Nevada Reno, NV, USA
| | - Clay Harrison
- Department of Electrical and Biomedical Engineering, University of Nevada Reno, NV, USA
| | - Yu Wang
- Key Laboratory of Functional Materials Physics and Chemistry of The Ministry of Education, Jilin Normal University, Jilin, China
| | - Jialong Zhao
- Key Laboratory of Functional Materials Physics and Chemistry of The Ministry of Education, Jilin Normal University, Jilin, China
| | - Xiaoshan Zhu
- Department of Electrical and Biomedical Engineering, University of Nevada Reno, NV, USA
- Biomedical Engineering Program, University of Nevada Reno, NV, USA
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17
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Halder G, Ghosh D, Ali MY, Sahasrabudhe A, Bhattacharyya S. Interface Engineering in Quantum-Dot-Sensitized Solar Cells. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:10197-10216. [PMID: 29584956 DOI: 10.1021/acs.langmuir.8b00293] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The unique properties of II-VI semiconductor nanocrystals such as superior light absorption, size-dependent optoelectronic properties, solution processability, and interesting photophysics prompted quantum-dot-sensitized solar cells (QDSSCs) as promising candidates for next-generation photovoltaic (PV) technology. QDSSCs have advantages such as low-cost device fabrication, multiple exciton generation, and the possibility to push over the theoretical power conversion efficiency (PCE) limit of 32%. In spite of dedicated research efforts to enhance the PCE, optimize individual solar cell components, and better understand the underlying science, QDSSCs have unfortunately not lived up to their potential due to shortcomings in the fabrication process and with the QDs themselves. In this feature article, we briefly discuss the QDSSC concepts and mechanisms of the charge carrier recombination pathways that occur at multiple interfaces, viz., (i) metal oxide (MO)/QDs, (ii) MO/QDs/electrolyte, and (iii) counter electrode (CE)/electrolyte. The rational strategies that have been developed to minimize/block these charge recombination pathways are elaborated. The article concludes with a discussion of the present challenges in fabricating efficient devices and future prospects for QDSSCs.
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Affiliation(s)
- Ganga Halder
- Department of Chemical Sciences and Centre for Advanced Functional Materials , Indian Institute of Science Education and Research (IISER) Kolkata , Mohanpur 741246 , India
| | - Dibyendu Ghosh
- Department of Chemical Sciences and Centre for Advanced Functional Materials , Indian Institute of Science Education and Research (IISER) Kolkata , Mohanpur 741246 , India
| | - Md Yusuf Ali
- Department of Chemical Sciences and Centre for Advanced Functional Materials , Indian Institute of Science Education and Research (IISER) Kolkata , Mohanpur 741246 , India
| | - Atharva Sahasrabudhe
- Department of Chemical Sciences and Centre for Advanced Functional Materials , Indian Institute of Science Education and Research (IISER) Kolkata , Mohanpur 741246 , India
| | - Sayan Bhattacharyya
- Department of Chemical Sciences and Centre for Advanced Functional Materials , Indian Institute of Science Education and Research (IISER) Kolkata , Mohanpur 741246 , India
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18
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Kaur M, Sharma A, Olutas M, Erdem O, Kumar A, Sharma M, Demir HV. Cd-free Cu-doped ZnInS/ZnS Core/Shell Nanocrystals: Controlled Synthesis And Photophysical Properties. NANOSCALE RESEARCH LETTERS 2018; 13:182. [PMID: 29916083 PMCID: PMC6006007 DOI: 10.1186/s11671-018-2599-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 06/11/2018] [Indexed: 06/08/2023]
Abstract
Here, we report efficient composition-tunable Cu-doped ZnInS/ZnS (core and core/shell) colloidal nanocrystals (CNCs) synthesized by using a colloidal non-injection method. The initial precursors for the synthesis were used in oleate form rather than in powder form, resulting in a nearly defect-free photoluminescence (PL) emission. The change in Zn/In ratio tunes the percentage incorporation of Cu in CNCs. These highly monodisperse Cu-doped ZnInS CNCs having variable Zn/In ratios possess peak emission wavelength tunable from 550 to 650 nm in the visible spectrum. The quantum yield (QY) of these synthesized Cd-free CNCs increases from 6.0 to 65.0% after coating with a ZnS shell. The CNCs possessing emission from a mixed contribution of deep trap and dopant states to only dominant dopant-related Stokes-shifted emission are realized by a careful control of stoichiometric ratio of different reactant precursors during synthesis. The origin of this shift in emission was understood by using steady state and time-resolved fluorescence (TRF) spectroscopy studies. As a proof-of-concept demonstration, these blue excitable Cu-doped ZnInS/ZnS CNCs have been integrated with commercial blue LEDs to generate white-light emission (WLE). The suitable combination of these highly efficient doped CNCs results led to a Commission Internationale de l'Enclairage (CIE) color coordinates of (0.33, 0.31) at a color coordinate temperature (CCT) of 3694 K, with a luminous efficacy of optical radiation (LER) of 170 lm/Wopt and a color rendering index (CRI) of 88.
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Affiliation(s)
- Manpreet Kaur
- Department of Nanotechnology, Sri Guru Granth Sahib World University, Punjab, 140406 India
- Department of Electrical and Electronics Engineering, Department of Physics, and UNAM–Institute of Materials Science and Nanotechnology, Bilkent University, 06800 Ankara, Turkey
| | - Ashma Sharma
- Department of Electrical and Electronics Engineering, Department of Physics, and UNAM–Institute of Materials Science and Nanotechnology, Bilkent University, 06800 Ankara, Turkey
- LUMINOUS! Center of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronics Engineering, School of Physical and Mathematical Sciences, School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, Singapore, 639798 Singapore
| | - Murat Olutas
- Department of Electrical and Electronics Engineering, Department of Physics, and UNAM–Institute of Materials Science and Nanotechnology, Bilkent University, 06800 Ankara, Turkey
- Department of Physics, Abant Izzet Baysal University, 14030 Bolu, Turkey
| | - Onur Erdem
- Department of Electrical and Electronics Engineering, Department of Physics, and UNAM–Institute of Materials Science and Nanotechnology, Bilkent University, 06800 Ankara, Turkey
| | - Akshay Kumar
- Department of Nanotechnology, Sri Guru Granth Sahib World University, Punjab, 140406 India
| | - Manoj Sharma
- Department of Nanotechnology, Sri Guru Granth Sahib World University, Punjab, 140406 India
- Department of Electrical and Electronics Engineering, Department of Physics, and UNAM–Institute of Materials Science and Nanotechnology, Bilkent University, 06800 Ankara, Turkey
- LUMINOUS! Center of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronics Engineering, School of Physical and Mathematical Sciences, School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, Singapore, 639798 Singapore
| | - Hilmi Volkan Demir
- Department of Electrical and Electronics Engineering, Department of Physics, and UNAM–Institute of Materials Science and Nanotechnology, Bilkent University, 06800 Ankara, Turkey
- LUMINOUS! Center of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronics Engineering, School of Physical and Mathematical Sciences, School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, Singapore, 639798 Singapore
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19
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Selvaraj J, Mahesh A, Baskaralingam V, Dhayalan A, Paramasivam T. Colloidal Gradated Alloyed (Cu)ZnInS/ZnS Core/Shell Nanocrystals with Tunable Optical Properties for Live Cell Optical Imaging. ChemistrySelect 2018. [DOI: 10.1002/slct.201800742] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Joicy Selvaraj
- Centre for Nanoscience and TechnologyPondicherry University Puducherry - 605 014 India
| | - Arun Mahesh
- Department of BiotechnologyPondicherry University Puducherry - 605 014 India
| | - Vaseeharan Baskaralingam
- Department of Animal Health and ManagementAlagappa University Karaikudi – 630 003, Tamil Nadu India
| | - Arunkumar Dhayalan
- Department of BiotechnologyPondicherry University Puducherry - 605 014 India
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20
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Zhang KY, Yu Q, Wei H, Liu S, Zhao Q, Huang W. Long-Lived Emissive Probes for Time-Resolved Photoluminescence Bioimaging and Biosensing. Chem Rev 2018; 118:1770-1839. [DOI: 10.1021/acs.chemrev.7b00425] [Citation(s) in RCA: 479] [Impact Index Per Article: 79.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Kenneth Yin Zhang
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, P. R. China
| | - Qi Yu
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, P. R. China
| | - Huanjie Wei
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, P. R. China
| | - Shujuan Liu
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, P. R. China
| | - Qiang Zhao
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, P. R. China
| | - Wei Huang
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, P. R. China
- Shaanxi
Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), Xi’an 710072, P. R. China
- Key
Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced
Materials (IAM), Jiangsu National Synergetic Innovation Center for
Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), Nanjing 211800, P. R. China
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21
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Liu W, Zheng J, Cao S, Wang L, Gao F, Chou KC, Hou X, Yang W. Mass production of Mn2+-doped CsPbCl3 perovskite nanocrystals with high quality and enhanced optical performance. Inorg Chem Front 2018. [DOI: 10.1039/c8qi00824h] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel microwave-assisted hot injection strategy for mass production of high quality Mn2+:CsPbCl3 NCs was reported.
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Affiliation(s)
- Wenna Liu
- State Key Laboratory of Advanced Metallurgy
- University of Science and Technology Beijing
- Beijing 100083
- China
- Institute of Materials
| | - Jinju Zheng
- Institute of Materials
- Ningbo University of Technology
- Ningbo City
- China
| | - Sheng Cao
- Department of Chemical and Biomolecular Engineering
- National University of Singapore
- Singapore 119260
- Singapore
| | - Lin Wang
- Institute of Materials
- Ningbo University of Technology
- Ningbo City
- China
| | - Fengmei Gao
- Institute of Materials
- Ningbo University of Technology
- Ningbo City
- China
| | - Kuo-Chih Chou
- State Key Laboratory of Advanced Metallurgy
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Xinmei Hou
- State Key Laboratory of Advanced Metallurgy
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Weiyou Yang
- Institute of Materials
- Ningbo University of Technology
- Ningbo City
- China
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22
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Xu R, Liao C, Xu Y, Zhang C, Xiao M, Zhang L, Lu C, Cui Y, Zhang J. Bright type-II photoluminescence from Mn-doped CdS/ZnSe/ZnS quantum dots with Mn 2+ ions as exciton couplers. NANOSCALE 2017; 9:18281-18289. [PMID: 29139512 DOI: 10.1039/c7nr05670b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Mn2+ ions were introduced as exciton couplers to enhance the quantum yield (QY) of type-II photoluminescence (PL) from CdS/ZnSe/ZnS quantum dots (QDs) with slow hot-exciton cooling and low radiative rate. Transient absorption spectroscopy verifies the faster bleach recovery and faster peak red-shifting at the charge-transfer state. And the transient PL peak of the QDs changes from blue-shifting to red-shifting due to Mn2+ doping. The QY of type-II PL can be enhanced from ∼35% to ∼60% by Mn2+ doping. As the energy-transfer-stations of hot excitons during rapid ET (∼100 ps), Mn2+ ions transform more excitons from hot to cold for emission. As the couplers of cold excitons during long thermal equilibrium (∼100 ns), Mn2+ ions further decrease exciton trapping by strong bidirectional coupling. This work provides a unique way of acquiring high QY of type-II PL, and highlights the general law of PL enhancement in Mn-doped QDs.
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Affiliation(s)
- Ruilin Xu
- Advanced Photonic Center, Southeast University, Nanjing 210096, China.
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23
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Tsolekile N, Parani S, Matoetoe MC, Songca SP, Oluwafemi OS. Evolution of ternary I–III–VI QDs: Synthesis, characterization and application. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.nanoso.2017.08.012] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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24
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Nsibande S, Forbes P. Fluorescence detection of pesticides using quantum dot materials – A review. Anal Chim Acta 2016; 945:9-22. [DOI: 10.1016/j.aca.2016.10.002] [Citation(s) in RCA: 158] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 09/09/2016] [Accepted: 10/02/2016] [Indexed: 11/15/2022]
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25
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Sustainable, Rapid Synthesis of Bright-Luminescent CuInS2-ZnS Alloyed Nanocrystals: Multistage Nano-xenotoxicity Assessment and Intravital Fluorescence Bioimaging in Zebrafish-Embryos. Sci Rep 2016; 6:26078. [PMID: 27188464 PMCID: PMC4870560 DOI: 10.1038/srep26078] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 04/26/2016] [Indexed: 11/21/2022] Open
Abstract
Near-infrared (NIR) luminescent CuInS2-ZnS alloyed nanocrystals (CIZS-NCs) for highly fluorescence bioimaging have received considerable interest in recent years. Owing, they became a desirable alternative to heavy-metal based-NCs and organic dyes with unique optical properties and low-toxicity for bioimaging and optoelectronic applications. In the present study, bright and robust CIZS-NCs have been synthesized within 5 min, as-high-as 230 °C without requiring any inert-gas atmosphere via microwave-solvothermal (MW-ST) method. Subsequently, the in vitro and in vivo nano-xenotoxicity and cellular uptake of the MUA-functionalized CIZS-NCs were investigated in L929, Vero, MCF7 cell lines and zebrafish-embryos. We observed minimal toxicity and acute teratogenic consequences upto 62.5 μg/ml of the CIZS-NCs in zebrafish-embryos. We also observed spontaneous uptake of the MUA-functionalized CIZS-NCs by 3 dpf older zebrafish-embryos that are evident through bright red fluorescence-emission at a low concentration of 7.8 μg/mL. Hence, we propose that the rapid, low-cost, large-scale “sustainable” MW-ST synthesis of CIZS-NCs, is an ideal bio-nanoprobe with good temporal and spatial resolution for rapid labeling, long-term in vivo tracking and intravital-fluorescence-bioimaging (IVBI).
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26
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Jo DY, Kim D, Kim JH, Chae H, Seo HJ, Do YR, Yang H. Tunable White Fluorescent Copper Gallium Sulfide Quantum Dots Enabled by Mn Doping. ACS APPLIED MATERIALS & INTERFACES 2016; 8:12291-7. [PMID: 27120773 DOI: 10.1021/acsami.6b01763] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Fluorescence of semiconductor quantum dots (QDs) can be tuned by engineering the band gap via size and composition control and further doping them with impurity ions. Targeting on highly bright white-emissive I-III-VI -type copper gallium sulfide (Cu-Ga-S, CGS) host QDs with the entire visible spectral coverage of blue to red, herein, Mn(2+) ion doping, through surface adsorption and lattice diffusion is fulfilled. Upon doping a distinct Mn emission from (4)T1-(6)A1 transition successfully appears in white photoluminescence (PL) of undoped CGS/ZnS core/shell QDs and with varying Mn concentration a systematic white spectral evolution of CGS:Mn/ZnS QDs is achievable with high PL quantum yield retained. The origins of white PL of CGS:Mn/ZnS QDs that is well decomposed into three emission bands are appropriately assigned. The resulting single-phased, doped QDs are then employed as near-UV-to-white down converters for the fabrication of white light-emitting diodes (LEDs). Electroluminescent properties of white QD-LEDs depending on Mn concentration of CGS:Mn/ZnS QDs and forward current are also discussed in detail.
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Affiliation(s)
- Dae-Yeon Jo
- Department of Materials Science and Engineering, Hongik University , Seoul 121-791, Korea
| | - Daekyoung Kim
- Sungkyunkwan Advanced Institute of Nanotechnology, Sungkyunkwan University (SKKU) , Suwon 440-746, Korea
| | - Jong-Hoon Kim
- Department of Materials Science and Engineering, Hongik University , Seoul 121-791, Korea
| | - Heeyeop Chae
- Sungkyunkwan Advanced Institute of Nanotechnology, Sungkyunkwan University (SKKU) , Suwon 440-746, Korea
| | - Hyo Jin Seo
- Department of Physics, Pukyong National University , Busan 608-737, Korea
| | - Young Rag Do
- Department of Chemistry, Kookmin University , Seoul 136-702, Korea
| | - Heesun Yang
- Department of Materials Science and Engineering, Hongik University , Seoul 121-791, Korea
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27
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Zhou C, Wu Z, Guo Y, Li Y, Cao H, Zheng X, Dou X. Ultrasensitive, Real-time and Discriminative Detection of Improvised Explosives by Chemiresistive Thin-film Sensory Array of Mn(2+) Tailored Hierarchical ZnS. Sci Rep 2016; 6:25588. [PMID: 27161193 PMCID: PMC4861922 DOI: 10.1038/srep25588] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 04/18/2016] [Indexed: 11/25/2022] Open
Abstract
A simple method combing Mn2+ doping with a hierarchical structure was developed for the improvement of thin-film sensors and efficient detection of the explosives relevant to improvised explosive devices (IEDs). ZnS hierarchical nanospheres (HNs) were prepared via a solution-based route and their sensing performances were manipulated by Mn2+ doping. The responses of the sensors based on ZnS HNs towards 8 explosives generally increase firstly and then decrease with the increase of the doped Mn2+ concentration, reaching the climate at 5% Mn2+. Furthermore, the sensory array based on ZnS HNs with different doping levels achieved the sensitive and discriminative detection of 6 analytes relevant to IEDs and 2 military explosives in less than 5 s at room temperature. Importantly, the superior sensing performances make ZnS HNs material interesting in the field of chemiresistive sensors, and this simple method could be a very promising strategy to put the sensors based on thin-films of one-dimensional (1D) nanostructures into practical IEDs detection.
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Affiliation(s)
- Chaoyu Zhou
- School of Life Science and Biotechnology, Liaoning Key Lab of Bio-organic Chemistry, Dalian University, Dalian 116622, Liaoning Province, P. R. China.,Laboratory of Environmental Science and Technology, Xinjiang Technical Institute of Physics &Chemistry; Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China
| | - Zhaofeng Wu
- Laboratory of Environmental Science and Technology, Xinjiang Technical Institute of Physics &Chemistry; Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China
| | - Yanan Guo
- Laboratory of Environmental Science and Technology, Xinjiang Technical Institute of Physics &Chemistry; Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China
| | - Yushu Li
- Laboratory of Environmental Science and Technology, Xinjiang Technical Institute of Physics &Chemistry; Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China
| | - Hongyu Cao
- School of Life Science and Biotechnology, Liaoning Key Lab of Bio-organic Chemistry, Dalian University, Dalian 116622, Liaoning Province, P. R. China
| | - Xuefang Zheng
- School of Life Science and Biotechnology, Liaoning Key Lab of Bio-organic Chemistry, Dalian University, Dalian 116622, Liaoning Province, P. R. China
| | - Xincun Dou
- Laboratory of Environmental Science and Technology, Xinjiang Technical Institute of Physics &Chemistry; Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China
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28
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Xuan TT, Liu JQ, Yu CY, Xie RJ, Li HL. Facile Synthesis of Cadmium-Free Zn-In-S:Ag/ZnS Nanocrystals for Bio-Imaging. Sci Rep 2016; 6:24459. [PMID: 27074820 PMCID: PMC4830992 DOI: 10.1038/srep24459] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 03/29/2016] [Indexed: 12/23/2022] Open
Abstract
High quality cadmium-free Zn-In-S:Ag doped-nanocrystals (d-NCs) were synthesized via a simple one-step noninjection route using silver nitrate, indium acetate, zinc acetate, oleylamine, S powder and 1-dodecanethiol as starting materials in an organic phase. The size and optical properties can be effectively tailored by controlling the reaction time, reaction temperature, Ag(+) dopant concentration, and the molar ratio of In to Zn. The photoluminescence wavelength of as-prepared Zn-In-S:Ag NCs covered a broad visible range from 458 nm to 603 nm. After being passivated by protective ZnS shell, the photoluminescence quantum yield (PLQY) of Zn-In-S:Ag(+) /ZnS was greatly improved to 43.5%. More importantly, the initial high PLQY of the obtained core/shell d-NCs in organic media can be preserved when being transferred into the aqueous media via ligand exchange. Finally, high quality Zn-In-S:Ag(+) /ZnS d-NCs in aqueous phase were applied as bio-imaging agents for identifying living KB cells.
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Affiliation(s)
- Tong-Tong Xuan
- Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Materials Science, East China Normal University, Shanghai, 200062, China
| | - Jia-Qing Liu
- Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Materials Science, East China Normal University, Shanghai, 200062, China
| | - Cai-Yan Yu
- Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Materials Science, East China Normal University, Shanghai, 200062, China
| | - Rong-Jun Xie
- Sialon Group, National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Hui-Li Li
- Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Materials Science, East China Normal University, Shanghai, 200062, China
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29
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Kaiser U, Sabir N, Carrillo-Carrion C, del Pino P, Bossi M, Heimbrodt W, Parak WJ. Förster resonance energy transfer mediated enhancement of the fluorescence lifetime of organic fluorophores to the millisecond range by coupling to Mn-doped CdS/ZnS quantum dots. NANOTECHNOLOGY 2016; 27:055101. [PMID: 26670636 DOI: 10.1088/0957-4484/27/5/055101] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Manganese-doped CdS/ZnS quantum dots have been used as energy donors in a Förster-like resonance energy transfer (FRET) process to enhance the effective lifetime of organic fluorophores. It was possible to tune the effective lifetime of the fluorophores by about six orders of magnitude from the nanosecond (ns) up to the millisecond (ms) region. Undoped and Mn-doped CdS/ZnS quantum dots functionalized with different dye molecules were selected as a model system for investigating the multiple energy transfer process and the specific interaction between Mn ions and the attached dye molecules. While the lifetime of the free dye molecules was about 5 ns, their linking to undoped CdS/ZnS quantum dots led to a long effective lifetime of about 150 ns, following a non-exponential transient. Manganese-doped core-shell quantum dots further enhanced the long-lasting decay time of the dye to several ms. This opens up a pathway to analyse different fluorophores in the time domain with equal spectral emissions. Such lifetime multiplexing would be an interesting alternative to the commonly used spectral multiplexing in fluorescence detection schemes.
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Affiliation(s)
- Uwe Kaiser
- Department of Physics and Material Sciences Center (WZMW), Philipps-University Marburg, Renthof 5, D-35032 Marburg, Germany
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30
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Pradhan N. Red-Tuned Mn d-d Emission in Doped Semiconductor Nanocrystals. Chemphyschem 2016; 17:1087-94. [PMID: 26632423 DOI: 10.1002/cphc.201500953] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Indexed: 12/30/2022]
Abstract
Light-emitting Mn-doped semiconductor nanocrystals have been extensively studied for the last three decades for their intense and stable Mn d-d emission. In principle, this emission should be fixed at 585 nm (yellow), but recent studies have shown that the emission can be widely tuned even to 650 nm (red). This is a spectacular achievement as this would make Mn-doped nanocrystals efficient and tunable light emitters. Keeping these developments in view, the chemistry of the synthesis of these materials, their photophysical processes and the expected origins of their red emission are summarized in this Minireview. All the related important studies from 1992 onwards are chronologically discussed, and one particular case is elaborated on in detail. As these materials are potentially important for biology, and photovoltaic, sensing and light-emitting devices, this Minireview is expected to help researchers investigating the chemistry, physics and applications of these materials.
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Affiliation(s)
- Narayan Pradhan
- Department of Materials Science, Indian Association for the Cultivation of Science, Kolkata, 700032, India.
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31
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Ghosh A, Palchoudhury S, Thangavel R, Zhou Z, Naghibolashrafi N, Ramasamy K, Gupta A. A new family of wurtzite-phase Cu2ZnAS4−x and CuZn2AS4 (A = Al, Ga, In) nanocrystals for solar energy conversion applications. Chem Commun (Camb) 2016; 52:264-7. [DOI: 10.1039/c5cc07743e] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A new family of semiconductors Cu2ZnAS4−x and CuZn2AS4 (A = Al, Ga, In) that absorb strongly at visible wavelengths has been synthesized as nanocrystals.
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Affiliation(s)
- Anima Ghosh
- Center for Materials for Information Technology
- The University of Alabama
- Tuscaloosa
- USA
- Department of Applied Physics
| | | | | | - Ziyou Zhou
- Center for Materials for Information Technology
- The University of Alabama
- Tuscaloosa
- USA
| | | | - Karthik Ramasamy
- Center for Integrated Nanotechnologies
- Los Alamos National Laboratory
- Albuquerque
- USA
| | - Arunava Gupta
- Center for Materials for Information Technology
- The University of Alabama
- Tuscaloosa
- USA
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32
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Thangaraju D, Masuda Y, Mohamed Mathar Sahip IK, Inami W, Kawata Y, Hayakawa Y. Multi-modal imaging of HeLa cells using a luminescent ZnS:Mn/NaGdF4:Yb:Er nanocomposite with enhanced upconversion red emission. RSC Adv 2016. [DOI: 10.1039/c6ra02422j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
ZnS:Mn/NaGdF4:Yb:Er nanocomposite was synthesized using a single-step hot injection method and then applied in the downconversion and upconversion optical imaging of living HeLa cells.
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Affiliation(s)
| | - Yuriko Masuda
- Graduate School of Science and Technology
- Shizuoka University
- Hamamatsu 432-8011
- Japan
| | | | - Wataru Inami
- Research Institute of Electronics
- Shizuoka University
- Hamamatsu 432-8011
- Japan
- Graduate School of Science and Technology
| | - Yoshimasa Kawata
- Research Institute of Electronics
- Shizuoka University
- Hamamatsu 432-8011
- Japan
- Graduate School of Science and Technology
| | - Yasuhiro Hayakawa
- Research Institute of Electronics
- Shizuoka University
- Hamamatsu 432-8011
- Japan
- Graduate School of Science and Technology
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33
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Zhang QH, Tian Y, Wang CF, Chen S. Construction of Ag-doped Zn–In–S quantum dots toward white LEDs and 3D luminescent patterning. RSC Adv 2016. [DOI: 10.1039/c6ra05689j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The synthesis of green photoluminescent Ag-doped Zn–In–S quantum dots and their applications in patterning and white LEDs are reported.
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Affiliation(s)
- Qiu-Hong Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemical Engineering
- Nanjing Tech University (the former: Nanjing University of Technology)
- Nanjing 210009
- P. R. China
| | - Yu Tian
- State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemical Engineering
- Nanjing Tech University (the former: Nanjing University of Technology)
- Nanjing 210009
- P. R. China
| | - Cai-Feng Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemical Engineering
- Nanjing Tech University (the former: Nanjing University of Technology)
- Nanjing 210009
- P. R. China
| | - Su Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemical Engineering
- Nanjing Tech University (the former: Nanjing University of Technology)
- Nanjing 210009
- P. R. China
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34
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Li J, Liu Y, Hua J, Tian L, Zhao J. Photoluminescence properties of transition metal-doped Zn–In–S/ZnS core/shell quantum dots in solid films. RSC Adv 2016. [DOI: 10.1039/c6ra05485d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The photoluminescence (PL) properties of transition metal ion (Mn2+ or Cu+) doped Zn–In–S/ZnS core/shell quantum dots (QDs) in solution and solid films were investigated by using steady-state and time-resolved PL spectra.
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Affiliation(s)
- Jiaming Li
- Department of Physics
- Yanbian University
- Yanji 133002
- China
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education
| | - Yang Liu
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education
- Jilin Normal University
- Siping 136000
- China
| | - Jie Hua
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education
- Jilin Normal University
- Siping 136000
- China
| | - Lianhua Tian
- Department of Physics
- Yanbian University
- Yanji 133002
- China
| | - Jialong Zhao
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education
- Jilin Normal University
- Siping 136000
- China
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35
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Large Stokes Shift and High Efficiency Luminescent Solar Concentrator Incorporated with CuInS2/ZnS Quantum Dots. Sci Rep 2015; 5:17777. [PMID: 26642815 PMCID: PMC4672350 DOI: 10.1038/srep17777] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 11/04/2015] [Indexed: 12/23/2022] Open
Abstract
Luminescent solar concentrator (LSC) incorporated with quantum dots (QDs) have been widely regarded as one of the most important development trends of cost-effective solar energy. In this study, for the first time we report a new QDs-LSC integrated with heavy metal free CuInS2/ZnS core/shell QDs with large Stokes shift and high optical efficiency. The as-prepared CuInS2/ZnS QDs possess advantages of high photoluminescence quantum yield of 81% and large Stocks shift more than 150 nm. The optical efficiency of CuInS2/ZnS QDs-LSC reaches as high as 26.5%. Moreover, the power conversion efficiency of the QDs-LSC-PV device reaches more than 3 folds to that of pure PMMA-PV device. Furthermore, the PV device is able to harvest 4.91 folds solar energy with the assistance of this new CuInS2/ZnS QDs-LSC for the same size c-Si PV cell. The results demonstrate that this new CuInS2/ZnS QDs-LSC provides a promising way for the high efficiency, nonhazardous and low cost solar energy.
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36
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Peng L, Huang K, Zhang Z, Zhang Y, Shi Z, Xie R, Yang W. Bandgap- and Radial-Position-Dependent Mn-Doped Zn-Cu-In-S/ZnS Core/Shell Nanocrystals. Chemphyschem 2015; 17:752-8. [DOI: 10.1002/cphc.201500787] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Indexed: 12/26/2022]
Affiliation(s)
- Lucheng Peng
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry; College of Chemistry; Jilin University; Changchun 130012 China
| | - Keke Huang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry; College of Chemistry; Jilin University; Changchun 130012 China
| | - Zhuolei Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry; College of Chemistry; Jilin University; Changchun 130012 China
| | - Ying Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry; College of Chemistry; Jilin University; Changchun 130012 China
| | - Zhan Shi
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry; College of Chemistry; Jilin University; Changchun 130012 China
| | - Renguo Xie
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry; College of Chemistry; Jilin University; Changchun 130012 China
| | - Wensheng Yang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry; College of Chemistry; Jilin University; Changchun 130012 China
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37
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Yuan X, Ma R, Zhang W, Hua J, Meng X, Zhong X, Zhang J, Zhao J, Li H. Dual emissive manganese and copper Co-doped Zn-In-S quantum dots as a single color-converter for high color rendering white-light-emitting diodes. ACS APPLIED MATERIALS & INTERFACES 2015; 7:8659-66. [PMID: 25866991 DOI: 10.1021/acsami.5b00925] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Novel white light emitting diodes (LEDs) with environmentally friendly dual emissive quantum dots (QDs) as single color-converters are one of the most promising high-quality solid-state lighting sources for meeting the growing global demand for resource sustainability. A facile method was developed for the synthesis of the bright green-red-emitting Mn and Cu codoped Zn-In-S QDs with an absorption bangdgap of 2.56 eV (485 nm), a large Stokes shift of 150 nm, and high emission quantum yield up to 75%, which were suitable for warm white LEDs based on blue GaN chips. The wide photoluminescence (PL) spectra composed of Cu-related green and Mn-related red emissions in the codoped QDs could be controlled by varying the doping concentrations of Mn and Cu ions. The energy transfer processes in Mn and Cu codoped QDs were proposed on the basis of the changes in PL intensity and lifetime measured by means of steady-state and time-resolved PL spectra. By integrating these bicolor QDs with commercial GaN-based blue LEDs, the as-fabricated tricolor white LEDs showed bright natural white light with a color rendering index of 95, luminous efficacy of 73.2 lm/W, and color temperature of 5092 K. These results indicated that (Mn,Cu):Zn-In-S/ZnS QDs could be used as a single color-converting material for the next generation of solid-state lighting.
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Affiliation(s)
- Xi Yuan
- †Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping 136000, China
| | - Ruixin Ma
- †Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping 136000, China
| | - Wenjin Zhang
- ‡Institute of Applied Chemistry, East China University of Science and Technology, Shanghai 200237, China
| | - Jie Hua
- †Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping 136000, China
- §State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
| | - Xiangdong Meng
- †Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping 136000, China
| | - Xinhua Zhong
- ‡Institute of Applied Chemistry, East China University of Science and Technology, Shanghai 200237, China
| | - Jiahua Zhang
- ∥State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
| | - Jialong Zhao
- †Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping 136000, China
| | - Haibo Li
- †Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping 136000, China
- §State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
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