Article
Multidisciplinary Sciences
Alexander Savvin, Alexander Dormidonov, Evgeniya Smetanina, Vladimir Mitrokhin, Evgeniy Lipatov, Dmitriy Genin, Sergey Potanin, Alexander Yelisseyev, Viktor Vins
Summary: The authors successfully demonstrated lasing in (NV-) centers in diamond, achieving improved laser efficiency by fine-tuning the pump conditions to reduce photoionization. Investigation into lasing conditions and gain saturation was conducted under high-power laser pulse pumping of diamond crystal.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Tetsuya Tatsuishi, Kyotaro Kanehisa, Taisuke Kageura, Takahiro Sonoda, Yuki Hata, Kazuto Kawakatsu, Takashi Tanii, Shinobu Onoda, Alastair Stacey, Shozo Kono, Hiroshi Kawarada
Summary: This paper presents a new methodology for fabrication of 2D aligned NV ensembles by using pure diamond growth and high nitrogen coverage on (111) surface. The resulting 2D NV ensembles have high alignment ratio and long coherence time. Introducing thermal annealing of the nitrogen termination improves alignment rate.
Article
Materials Science, Multidisciplinary
Sergey Titkov, Valentina V. Yakovleva, Ilya D. Breev, Roman A. Babunts, Pavel G. Baranov, Nikolay S. Bortnikov
Summary: The NV-/W15 centers in natural diamonds were investigated using optically detected magnetic resonance (ODMR) spectroscopy. These centers are artificially created through irradiation and annealing for use in quantum sensors and computer qubits. The ODMR spectra showed that natural diamonds have lower stress levels and a variation in ODMR parameters over their volume. Confocal 2D scanning revealed that the concentration of NV- centers is higher within slipping planes {111}, indicating the formation of these centers through postgrowth plastic deformation.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Midrel Wilfried Ngandeu Ngambou, Clement Pellet-Mary, Ovidiu Brinza, Alessi Antonino, Gabriel Hetet, Alexandre Tallaire, Fabien Benedic, Jocelyn Achard
Summary: In this study, the CVD growth conditions were optimized to achieve a high NV density within a high-quality diamond layer. The effects of growth parameters and annealing temperature on NV doping and spin properties were investigated. A high NV density with narrow resonance linewidth was obtained, and defects were efficiently removed through annealing at high temperature.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Harini Hapuarachchi, Francesco Campaioli, Jared H. Cole
Summary: The nitrogen-vacancy (NV) center in diamond is highly sensitive to various factors and can be optically interrogated. By utilizing plasmonic resonances, the brightness and collection efficiency of NV centers can be enhanced, which is important for their application in sensing devices. However, the interaction between NV centers and plasmonic structures is not well-explored. This study presents a general theory of NV-plasmonic nanoparticle interactions and provides a quantitative explanation for existing experimental measurements.
Article
Chemistry, Physical
A. Watanabe, T. Nishikawa, H. Kato, M. Fujie, M. Fujiwara, T. Makino, S. Yamasaki, E. D. Herbschleb, N. Mizuochi
Summary: The study focuses on the spin and optical properties of NV centers in phosphorus-doped n-type diamond, demonstrating an extension of spin-coherence time, stabilization of charge state, and improvement of creation yield at a depth of approximately 15 nm. The longest T-2 of about 580 μs for shallow NV centers approaches the limit in bulk diamond, limited by the nuclear spins of natural abundant C-13.
Article
Chemistry, Physical
Yufei Zhang, Kaiyue Wang, Gangyuan Jia, Junlin Li, Hongxing Wang, Yuming Tian
Summary: The optical properties of a silicon-vacancy (Si-V) centre were studied using photoluminescence (PL) with temperature and excitation power dependencies. The intensity decrease, red shift, and broadening of line width with increasing temperature were observed, while the PL intensity of Si-V centre was sub-linear with increasing power. Additionally, the Fermi level shifted below the ground state level of Si-V in the irradiation region due to the introduction of neutral single vacancy (GR1) centre, suppressing the PL signal of the Si-V centre.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Optics
Zong-Da Zhang, Si-Yu Yin, Li-Cheng Wang, Ying-De Wang, Yun-Fei Li, Zhen-Nan Tian, Qi-Dai Chen
Summary: An array of single NV centers was prepared using the femtosecond laser direct writing method to address the accuracy and consistency issues in static magnetic field detection. The prepared NV centers have fewer defects and good stress uniformity, with an average spatial positioning error of only 0.2 μm. This array enables high accuracy measurement of magnetic field vector and gradient.
Article
Chemistry, Physical
Priyadharshini Balasubramanian, Christian Osterkamp, Ovidiu Brinza, Maxime Rollo, Isabelle Robert-Philip, Philippe Goldner, Vincent Jacques, Fedor Jelezko, Jocelyn Achard, Alexandre Tallaire
Summary: In this study, properties of negatively charged nitrogen-vacancy (NV-) centers created during single crystal diamond growth on [113]-oriented substrates with N2O as a dopant gas using chemical vapor deposition (CVD) were investigated. The results showed that at moderate growth temperatures, dense NV- ensembles with high NV-/ N0s ratios and high creation yield can be achieved. The material obtained here combines a high NV- density, long coherence times, and partial preferential orientation, making it a promising candidate for diamond-based quantum sensors.
Article
Physics, Applied
Juergen Weippert, Jan Engels, Patricia Quellmalz, Christian Giese, Tingpeng Luo, Niklas Mathes, Lukas Lindner, Jan Jeske, Peter Knittel, Lutz Kirste, Jan Kustermann, Vadim Lebedev
Summary: Heteroepitaxial chemical vapor deposition is currently the best option for fabricating diamond devices on a large scale. However, transferring the growth and structuring processes from small homoepitaxial to larger heteroepitaxial samples is not straightforward. In this study, we present an approach for fabricating functional microstructures on heteroepitaxially grown diamond films. The characterization reveals the growth of higher-index facets and localized doping on the sides of the microstructures, indicating potential for producing high-quality diamond devices.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
W. Pfaffle, D. Antonov, J. Wrachtrup, G. Bester
Summary: The computational approach presented in this study, based on density functional theory and screened configuration interaction, is capable of accurately treating highly correlated electron spins localized around semiconductor defects. It is computationally not more demanding than a usual density functional theory calculation, making it suitable for calculating isolated defects or defect complexes. This approach has been successfully applied to the nitrogen vacancy defect in diamond with very good agreement with experimental results.
Article
Engineering, Electrical & Electronic
Xuemin Wang, Doudou Zheng, Xiaocheng Wang, Xinyu Liu, Qimeng Wang, Junzhi Zhao, Hao Guo, Li Qin, Jun Tang, Zongmin Ma, Jun Liu
Summary: This study proposes a 520-nm laser diode integrated with a NV magnetometer, which solves the issue of large laser volume affecting the integration and performance of magnetometers.
IEEE SENSORS JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Sergei Malykhin, Yuliya Mindarava, Rinat Ismagilov, Fedor Jelezko, Alexander Obraztsov
Summary: In this study, single-crystal diamond needles with micrometer-scale sharp pyramids were successfully produced using a combination of chemical vapor deposition and thermal oxidation processes. Various color centers, such as nitrogen-vacancy (NV), silicon-vacancy (SiV), and germanium-vacancy (GeV), were formed in these needles during plasma enhanced chemical vapor deposition. The luminescent characteristics of the needles were observed, and the mechanisms of impurities introduction into the crystal lattice during the growth process were proposed and verified.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Optics
D. B. Radishev, M. A. Lobaev, S. A. Bogdanov, A. M. Gorbachev, A. L. Vikharev, M. N. Drozdov
Summary: Co-doping with nitrogen and phosphorus allows NV centers in diamond to predominantly exist in the NV- state and stabilize it under high excitation laser power. Cooling with liquid nitrogen further increases the fraction of the NV- state, which may be beneficial for optimizing the sensitivity of magnetometers.
JOURNAL OF LUMINESCENCE
(2021)
Article
Optics
Andris Berzins, Janis Smits, Andrejs Petruhins, Roberts Rimsa, Gatis Mozolevskis, Martins Zubkins, Ilja Fescenko
Summary: In this paper, the imaging of stresses in the top layer of diamond with deposited structures of Cr2O3 at temperatures 19°C and 37°C was demonstrated using stress-sensitive optically detected magnetic resonances (ODMR) in NV centers. The stresses in the diamond-film interface were also calculated and correlated to measured ODMR frequency shifts. The results show that NV microscopy can be used to optically detect and quantify the spatial distributions of stresses in diamond-based photonic devices with micrometer precision, and thin films can be used for local application of temperature-controlled stresses.
Article
Chemistry, Multidisciplinary
Geraldine Dantelle, Valerie Reita, Cecile Delacour
Summary: The dual-light emitting Yb3+,Er3+-codoped alpha-La(IO3)(3) nanocrystals can be used as optical nanoprobes and thermal sensors, with the ability to emit visible photoluminescence signals in cortical and hippocampal neurons, and has a relative thermal sensitivity of 1.2% K-1.
Review
Chemistry, Analytical
Maxime Perdriat, Clement Pellet-Mary, Paul Huillery, Loic Rondin, Gabriel Hetet
Summary: Controlling the motion of macroscopic oscillators in the quantum regime using opto-mechanical systems has been successful, particularly with the manipulation of levitating objects at the quantum level. Proposed schemes involving single long-lived atomic spins coupled with levitating mechanical oscillators offer the prospect of transferring quantum properties to the oscillators, with implications in quantum sensing and quantum mechanics tests. The integration of spin degrees of freedom into experiments may provide a rich playground at the intersection of condensed matter and atomic physics, with potential for significant advancements.
Article
Physics, Applied
Lucio Stefan, Anthony K. C. Tan, Baptiste Vindolet, Michael Hogen, Dickson Thian, Hang Khume Tan, Loic Rondin, Helena S. Knowles, Jean-Francois Roch, Anjan Soumyanarayanan, Mete Atature
Summary: The study introduces a multiangle reconstruction method that captures full nanoscale domain morphology and achieves photoluminescence quenching in all magnetic field regimes. This approach extends the application of diamond magnetometers to a wider pool of magnetic materials and phenomena for noninvasive nanoscale magnetic field imaging.
PHYSICAL REVIEW APPLIED
(2021)
Article
Chemistry, Multidisciplinary
Zhaoyang Liu, Haixin Qiu, Shuai Fu, Can Wang, Xuelin Yao, Alex G. Dixon, Stephane Campidelli, Egon Pavlica, Gvido Bratina, Shen Zhao, Loic Rondin, Jean-Sebastien Lauret, Akimitsu Narita, Mischa Bonn, Klaus Muellen, Artur Ciesielski, Hai Wang, Paolo Samori
Summary: The study demonstrates that the formation of graphene-NG van der Waals heterostructures can greatly enhance the responsivity and detectivity of photodetectors, showing potential for high-performance applications in optoelectronics.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Thomas Liu, Claire Tonnele, Shen Zhao, Loic Rondin, Christine Elias, Daniel Medina-Lopez, Hanako Okuno, Akimitsu Narita, Yannick Chassagneux, Christophe Voisin, Stephane Campidelli, David Beljonne, Jean-Sebastien Lauret
Summary: This study reports on the photophysics of C96H24(C12H25) graphene quantum dots. Through optical studies and molecular modeling, the importance of coupling to vibrations in the emission process is demonstrated. Optical fingerprints for H-like aggregates are also identified. These findings not only contribute to the precise control of sample production, but also pave the way for exciting physics research on twisted graphenoids.
Article
Nanoscience & Nanotechnology
Francois Riviere, Timothee de Guillebon, Damien Raynal, Martin Schmidt, Jean-Sebastien Lauret, Jean-Francois Roch, Loic Rondin
Summary: The Brownian motion of a particle hotter than its environment is a significant research topic that provides important insights into nanoscale thermal effects. This study uses optically levitated nanodiamonds to investigate the effects of particle's shape and material on its internal temperature and dynamics, and presents a model adaptable to other particles to assess the nanodiamond internal temperature. It also reveals the influence of other mechanisms on the nanodiamond dynamics and trapping stability.
Article
Physics, Condensed Matter
Geraldine Dantelle, Valerie Reita, Alain Ibanez, Gilles Ledoux, Christophe Dujardin
Summary: YAG nanocrystals codoped with Nd3+ and Cr3+ ions were produced using a modified solvothermal method, and their properties were characterized through X-ray diffraction and photoluminescence measurements. Temperature-dependent luminescence spectra were analyzed based on different excitation wavelengths.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Chemistry, Multidisciplinary
Quang-Trung Nguyen, Truong-Giang Le, Philippe Bergonzo, Quang-Thuan Tran
Summary: This work presents a method for preparing graphene/nickel nanocomposite materials using low-cost materials. The nanocomposite exhibits high performance as a sensor material, with small size nickel nanoparticles uniformly dispersed on a graphene oxide matrix. The sensor allows for rapid quantification of Sunset Yellow in the range of 10-1000 nM, with low detection limit and high sensitivity.
APPLIED SCIENCES-BASEL
(2022)
Article
Neurosciences
Qiao-Ling Chou, Ania Alik, Francois Marquier, Ronald Melki, Francois Treussart, Michel Simonneau
Summary: Endosomal transport and positioning play an important role in the establishment and function of neuronal compartments, and dysfunction of endo-lysosomal has been identified as a common mechanism in neurodegenerative diseases. This study analyzed the effect of alpha-synuclein and beta-amyloid on endolysosomal transport in mouse cortical neurons, and found that these protein aggregates significantly reduced the transport of endosomes and lysosomes, leading to disturbances in neuronal homeostasis. These findings suggest that targeting the internalization and transport of pathogenic protein aggregates may be a potential therapeutic strategy for neurodegenerative diseases.
Review
Chemistry, Multidisciplinary
Geraldine Dantelle, Sandrine Beauquis, Ronan Le Dantec, Virginie Monnier, Christine Galez, Yannick Mugnier
Summary: With the miniaturization of electronic-based devices, there is increasing research interest in the elaboration of multifunctional noncentrosymmetric nanocrystals with ferroelectric, pyroelectric, piezoelectric, and nonlinear optical properties. This article critically reviews recent achievements in the preparation of 0-D perovskite and nonperovskite oxides in the size range of 5-500 nm using solution-based methods, and discusses the size, morphology, and aggregation state in relation to the proposed formation mechanisms. The research community needs to pay special attention to the detailed understanding of the reaction pathways and crystallization mechanisms in order to improve the rational design of these multifunctional oxides in the future.
Article
Chemistry, Multidisciplinary
Baptiste Grimaud, Maxence Fretaud, Feriel Terras, Antoine Benassy, Karine Duroure, Valerie Bercier, Gaelle Trippe-Allard, Rabei Mohammedi, Thierry Gacoin, Filippo Del Bene, Francois Marquier, Christelle Langevin, Francois Treussart
Summary: This study measured fast axonal transport by tracing the SHG signal of nanoKTP endocytosed by zebrafish larvae brain neurons. The researchers confirmed the feasibility of the method by using different mutants and inhibitors, and accurately monitored subtle alterations in axonal transport in the brain.
Article
Chemistry, Multidisciplinary
Julien Lavie, Van Binh Vu, Daniel Medina-Lopez, Yannick Dappe, Thomas Liu, Loic Rondin, Jean-Sebastien Lauret, Sylvain Latil, Stephane Campidelli
Summary: Carbon nanomaterials, such as fullerene, nanotubes, graphene, and graphene quantum dots (GQDs), have been extensively studied by the scientific community for over 30 years. The synthesis of GQDs can be achieved through top-down and bottom-up approaches, with the latter allowing better control over size and shape. In this study, rectangular-shaped GQDs containing up to 162 sp(2) carbon atoms were successfully synthesized without functionalization. The dispersion and optical properties of the GQDs were investigated using sodium deoxycholate surfactant in water. The larger GQDs showed better dispersibility, possibly due to the increased number of surfactant molecules on their surfaces.
HELVETICA CHIMICA ACTA
(2023)
Article
Physics, Multidisciplinary
Damien Raynal, Timothee de Guillebon, David Guery-Odelin, Emmanuel Trizac, Jean-Sebastien Lauret, Loic Rondin
Summary: This article reports on the speeding-up equilibrium recovery in the previously unexplored underdamped regime using an optically levitated particle. The convergence towards equilibrium is accelerated by an order of magnitude compared to natural relaxation time. Furthermore, the efficiency of the studied protocols, especially for multidimensional systems, is discussed. These results pave the way for optimizing realistic nanomachines and developing efficient nanoheat engines.
PHYSICAL REVIEW LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Florian Semmer, Marie-Charlotte Emperauger, Colin Lopez, Christine Bogicevic, Francois Treussart, Karen Perronet, Francois Marquier
Summary: This article describes a three-dimensional real-time tracking technique based on nonlinear nanocrystals and a digital micromirror device, which can accurately assess biological processes and provide detailed information about molecular dynamics.
Article
Chemistry, Multidisciplinary
Sandra Claveau, Marek Kindermann, Alexandre Papine, Zamira Diaz-Riascos, Xavier Delen, Patrick Georges, Roser Lopez-Alemany, Oscar Martinez Tirado, Jean-Remi Bertrand, Ibane Abasolo, Petr Cigler, Francois Treussart
Summary: Nanodiamonds can transport active drugs in vivo, but methods for accurately determining their bioavailability are lacking. By making nanodiamonds fluorescent and developing an automated quantification method, we achieved high-resolution imaging with single-particle sensitivity in mouse organ and tumor tissue sections.
Article
Optics
R. B. Adamov, G. A. Melentev, I. V. Sedova, S. V. Sorokin, G. V. Klimko, I. S. Makhov, D. A. Firsov, V. A. Shalygin
Summary: This study investigates the THz luminescence in doped nanostructures with GaAs/AlGaAs quantum wells under interband optical pumping. The results show that the spatial separation of donors and acceptors can greatly enhance the integrated intensity of THz emission.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yanru Li, Lei Zhong, Sha Jiang, Yutong Wang, Binyao Huang, Guotao Xiang, Li Li, Yongjie Wang, Chuan Jing, Xianju Zhou
Summary: In this study, a ratiometric luminescent thermometry based on dual-emission centers was developed using co-doped CaNb2O6 phosphors with Bi3+ and Pr3+. The obtained samples exhibited good thermosensitive and thermochromic characteristics, with a maximum absolute sensitivity of 0.09 K-1 @ 528 K and a maximum relative sensitivity of 2.17 % K-1 @ 453 K.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yujing Gong, Yeqing Wang, Zhiyuan Wang, Yijian Sun, Yi Yu
Summary: Single crystals of Dy3+ single-doped and Dy3+/Tb3+ co-doped CaYAlO4 were grown and analyzed. The incorporation of Tb3+ resulted in increased absorption and emission cross sections. The fluorescence lifetimes and branching ratios of the yellow emission were affected by the presence of Tb3+. The deactivation effect of Tb3+ ions and energy transfer mechanism were also discussed.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Lu Chen, Zhuangzhuang Ma, Jian Chen, Wang Guo
Summary: This study focuses on enhancing the thermal robustness of phosphor converter materials by preparing composite ceramics of YAG:Ce combined with high-thermal-conductivity MgO. The composite ceramics showed high density and thermal conductivity at the optimum temperature of 1400℃. Stable laser-driven white light was obtained under blue laser excitation.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yuwei Wu, Chunhui Niu, Lei Wang, Mingqing Yang, Shiyu Zhang
Summary: Er3+-doped germanate-tellurite glasses were prepared and their structure, luminescent, and temperature-sensing properties were studied. The glass exhibited large values of O2 and O6 and its luminescence intensity varied with temperature.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Kensei Ichiba, Takumi Kato, Kenichi Watanabe, Yuma Takebuchi, Daisuke Nakauchi, Noriaki Kawaguchi, Takayuki Yanagida
Summary: In this study, Eu-doped YVO4 single crystals with different concentrations were fabricated to evaluate their photoluminescence and scintillation properties. The results showed that the samples doped with Eu exhibited emission peaks due to 4f-4f transitions in PL and scintillation spectra. Based on the pulse height spectra, the light yield of the Eu-doped samples increased with increasing Eu concentration, while the afterglow level decreased.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Daiwen Xiao, Hei-Yui Kai, Anjun Huang, Menglin Song, Ka-Leung Wong, Peter A. Tanner
Summary: The emission spectra of Cs2NaEuCl6 nanoparticles synthesized by the hot injection method are explained. The dispersion of the nanoparticles in alkane solvents in the experiment allows the determination of the magnetic dipole radiative rate for the D-5(0) -F-7(1) channel in vacuum, which is in agreement with the calculated value.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Italia V. Barbosa, Geraldine Dantelle, Alain Ibanez, Lauro J. Q. Maia
Summary: The thermal response and luminescence properties of different oxide matrices were evaluated to design more accurate thermal probes. It was found that thermal probes emitting in BW-II provide better thermal sensing with higher signal-to-noise ratio. Additionally, doping Nd3+ in Y2O3 matrix maximizes luminescence intensity, making it a promising matrix for thermal sensing.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Xin Li, Yu Zhang, Hongrui Ren, Lunlong Xie, Yinsheng Di, Mengqing Han, Zhaohui Bai, Quansheng Liu, Liangliang Zhang, Jiahua Zhang
Summary: This study successfully prepared phosphor samples based on Ca3-xLuxSc2-xMgxSi3O12:Ce3+ and investigated their luminescence properties. With the increase in Lu-Mg concentration, the peak of the sample redshifted, but the thermal stability gradually decreased. The LD devices made from CLSMS:Ce3+ fluorescent materials showed a decrease in cyan-green light and an increase in red light as the Lu-Mg concentration increased.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Tim Pier, Julia Hopster, Thomas Juestel
Summary: This study investigates and reports on several samples of cerium-activated gallium-based garnet phosphors. The optimal activator concentration was found to be 1 atom-%. The size of non-emitting lanthanide ions and the molar concentration of cerium strongly influenced the crystal field splitting, which in turn shaped the excitation and emission wavelengths.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Guijie Zhao, Wei Shi, Xin Xin, Fengcai Ma, Yongqing Li
Summary: This study reveals for the first time the proton transfer pathways and changes in the photophysical properties of P-TNS with three intramolecular hydrogen bonds. The reaction mechanism and driving force for the proton transfer process are explained through analysis of potential energy surface, frontier molecular orbitals, and hydrogen bond parameters, among others.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Li He, Jinshu Huang, Zhengce An, Haozhang Huang, Yu Zhao, Kexin Zhong, Bo Zhou
Summary: In this study, we designed a NaYF4:Yb3+/Tm3+@NaYF4 core-shell nanostructure to achieve thermochromic upconversion and high thermal sensitivity. We found that the blue upconversion emission of Tm3+ decreased while the deep-red emission increased with elevating temperature. The sample also showed a gradual emission color change from blue to purplish-red, and the optimal relative sensitivity reached 2.79% K-1.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Rupesh A. Talewar
Summary: A series of Li2TiO3 phosphors doped with Mn4+ and codoped with Mn4+ and Er3+ were synthesized, which demonstrated the ability of Mn4+ ions to absorb UV-Vis photons and subsequently transfer energy to Er3+ ions, resulting in the emission of near-infrared light. These materials have the potential to enhance the absorption efficiency of Er3+-based luminescent materials.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Xingyuan Ma, Jianfeng Li
Summary: Carbon quantum dots (CQDs) with tunable photoluminescence properties have been synthesized using suitable carbon and dopant sources in an aqueous system. The synthesized CQDs exhibited blue, green, yellow, and red emissions, and solid-state luminescence was achieved through the preparation of solid-state fluorescent films and phosphors. This study provides important technical support for the future development of CQDs synthesis.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
De Bin Fu, Yang Bing Xu, Yu Teng Zhang, Shan Ting Liu, Xiao Fei Yang, Sheng Hua Liu
Summary: A pair of new chiral molecules, (S)-4 and (R)-4, have been designed and synthesized by introducing valine-containing groups at symmetrical positions on the periphery of an indolo[3,2-b]carbazole unit. These molecules exhibit aggregation-induced circular dichroism (AICD) properties in DMF/water mixtures, and in a mixture with 99% water fraction, they show strong, mirror-image, blue circularly polarized luminescence (CPL) signals.
JOURNAL OF LUMINESCENCE
(2024)
