Article
Chemistry, Inorganic & Nuclear
Anuj Dalal, Kapeesha Nehra, Anjli Hooda, Sitender Singh, Shri Bhagwan, Devender Singh, Sumit Kumar
Summary: This study reports the synthesis and photoluminescence performance of a series of heteroleptic europium complexes with fluorinated chromophoric ligand and 2,2'-bipyridine or their derivatives as ancillary ligand. The structure and photoluminescence properties of the synthesized complexes were analyzed using various spectroscopic techniques. The experimental and theoretical results from LUMPAC software show that the prepared complexes exhibit red emissive nature and can be used as red light emitting materials in various display devices.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Optics
Bartosz Bondzior, Chi Nguyen, Thi Hong Quan Vu, Diego Pugliese, Przemyslaw J. Deren, Laeticia Petit
Summary: The Judd-Ofelt theory was tested on Eu3+-doped glasses to evaluate their potential as luminescent thermometers. The theory accurately estimated the thermometric sensitivity, and the addition of B2O3 or SiO2 increased the absolute sensitivity without affecting the position of Eu3+ ions.
JOURNAL OF LUMINESCENCE
(2022)
Article
Optics
Kapeesha Nehra, Anuj Dalal, Anjli Hooda, Sitender Singh, Devender Singh
Summary: Highly red luminescent octacoordinated complexes were successfully synthesized by coordinating Eu(III) ion with auxiliary ligands. Spectroscopic characterization revealed the red luminescent properties of the complexes, indicating effective sensitization of the trivalent europium ion. Various parameters were calculated from the photoluminescence emission data, and color parameters suggested the red luminous behavior of the synthesized complexes. The research findings indicate the potential applications of these complexes in solid state lighting, OLEDs, and flat panel displays.
JOURNAL OF LUMINESCENCE
(2022)
Article
Optics
Pooja Hooda, Vaishnavi Lather, R. K. Malik, V. B. Taxak, S. P. Khatkar, Savita Khatri, Pratibha Ahlawat, Rajesh Kumar
Summary: The synthesis of europium (III) complexes using beta-keto acid and nitrogen donor chelates by grinding technique showed promising applications in lighting devices, lasers, solar cells, semiconductors, and biomedical field. Characteristic luminescence peak, color purity, and optical properties suggest potential use in display devices and optoelectronics. Biological studies indicate better results for complexes than ligands in pharmaceutical applications, hinting at their future potential in biomedical research.
Article
Chemistry, Physical
Kapeesha Nehra, Anuj Dalal, Anjli Hooda, Devender Singh, Sumit Kumar, Rajender Singh Malik
Summary: A series of heteroleptic luminescent europium moieties based on 1,10-phenanthroline and its derivatives were synthesized and studied for their photophysical characteristics through theoretical and experimental methods. The results showed that these complexes exhibited good quantum efficiency and emission properties, making them suitable for the design of various display devices.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Savita Khatri, Pooja Hooda, Pratibha Ahlawat, S. P. Khatkar, V. B. Taxak, Rajesh Kumar
Summary: Five luminescent ternary and one binary Europium(III) complexes were synthesized using an ecofriendly grinding method. The complexes were characterized and their photophysical properties were studied. Some of the complexes showed potential for laser emission transitions and red light emitting display devices.
RESEARCH ON CHEMICAL INTERMEDIATES
(2022)
Article
Optics
Anuj Dalal, Kapeesha Nehra, Anjli Hooda, Devender Singh, Sumit Kumar, Rajender Singh Malik
Summary: A series of octa coordinated tris(2-benzoylacetophenonate)europium complexes were synthesized with bidentate heteroaromatic auxiliary ligands, such as 2,2'-Bipyridine (Bpy) and its derivatives. The synthesized materials were structurally analyzed using various spectroscopic techniques. The results showed that these complexes exhibited good luminescence intensity, high quantum efficiency, and long luminescence lifetime, indicating their potential as red light emitting materials in flat panel displays and optoelectronic devices.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Analytical
Nishita Dua, Monika Punia, Pooja Chhillar, Manisha Bedi, Satyender Pal Khatkar, Vinod Bala Taxak, Priti Boora Doon
Summary: The study synthesized one binary and four ternary Eu(III)-based complexes with high thermal stability and promising potential for organic light-emitting diodes. The optical parameters of the complexes, such as nonradiative and radiative decay rates, luminescence decay time, and intrinsic quantum efficiency, were determined. The complexes exhibited red light emission and can be used in military radars and biological labeling.
Article
Chemistry, Analytical
Anuj Dalal, Kapeesha Nehra, Anjli Hooda, Devender Singh, Sumit Kumar, Rajender Singh Malik
Summary: Solid ternary europium complexes were synthesized using fluorinated beta-diketone and heteroaromatic bidentate auxiliary ligands. The luminescence features of the complexes were studied and showed efficient sensitization of the Eu3+ ion. The complexes were effectively excited in the UV region and exhibited characteristic red emission peaks. The properties of the complexes were determined and theoretical estimations were made.
Article
Materials Science, Multidisciplinary
Gabriel H. L. Munguba, Jose Diogo L. Dutra, Alfredo M. Simas
Summary: This article explores the challenges posed by the wide range of plausible stereoisomers found in europium complexes and their impact on the analysis and interpretation of luminescence data. The study reveals that various stereoisomer geometries, including those generated by the Complex Build Software, can effectively fit photophysical data using commonly employed luminescence formalisms. However, the existence of numerous experimental and theoretical stereoisomers often goes unnoticed, increasing the risk of selecting incorrect structures and overlooking alternative configurations. Additionally, the transition from solid-state to solution environments can trigger restructuring phenomena among these stereoisomers. Despite these challenges, luminescence analysis still holds potential for extracting valuable structural information.
Article
Biochemistry & Molecular Biology
Trofim Polikovskiy, Vladislav Korshunov, Mikhail Metlin, Viktoria Gontcharenko, Darya Metlina, Nikolay Datskevich, Mikhail Kiskin, Yury Belousov, Alisia Tsorieva, Ilya Taydakov
Summary: Six new complexes of the ligand HQ(cy) and Ln(3+) ions were synthesized and characterized. The study investigated the photochemical properties and luminescence properties of the complexes, and revealed the influence of complex stoichiometry on their luminescence properties.
Article
Chemistry, Physical
N. Kiwsakunkran, W. Chaiphaksa, N. Chanthima, H. J. Kim, S. Kothan, A. Prasatkhetragarn, J. Kaewkhao
Summary: The study investigated the optical properties of dysprosium-doped potassium aluminum gadolinium phosphate glass, revealing an increase in absorption spectra intensity with higher dysprosium oxide concentrations and the presence of four intense peaks in the photoluminescence spectra at 350 nm. The integration mode of scintillation efficiency at 9% for 0.50 mol% dysprosium-doped KAGP glass compared to BGO crystal shows potential for applications in medical and industrial X-ray imaging.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Chemistry, Physical
Kapeesha Nehra, Anuj Dalal, Anjli Hooda, Devender Singh, Sumit Kumar, Rajender Singh Malik, Parvin Kumar
Summary: The photophysical and optoelectronic characteristics of a series of ternary europium complexes with different heteroaromatic ancillary ligands were carefully studied. The synthesized octa coordinated complexes showed excellent luminescent intensity and long decay time due to the antenna effect of the beta-diketone ligand sensitizing the Eu (III) ion. These red luminescent materials have potential applications in solid state electronics, flat panel devices, and OLEDs.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Devender Singh, Shri Bhagwan, Anuj Dalal, Kapeesha Nehra, Raman Kumar Saini, Kapoor Singh, Anura Priyajith Simantilleke, Sumit Kumar, Ishwar Singh
Summary: Europium complex ternary materials with different ancillary ligands were prepared and studied for their optoelectronic characteristics. The materials exhibited bright red emission in the visible region spectrum, showing an efficient energy transport pathway through ancillary ligand-sensitized luminescence. Interaction between the metal and ligand significantly affected the quantum efficiency and Judd-Ofelt intensity factor of the materials.
Article
Materials Science, Multidisciplinary
Mohamed Atef Cherbib, Ismail Khattech, Habib Elhouichet
Summary: This study investigates the effects of phosphate network topology on the luminescent properties of mixed sodium/alkaline earths metaphosphate glasses doped with Sm2O3. Through experimental analysis, it was found that the structure of the glasses has a significant impact on their luminescence.
Article
Engineering, Electrical & Electronic
Ming Lu, Shuen Wei, Yanhua Luo, Bowen Zhang, Gang-Ding Peng
Summary: Compared to the untreated sample, the emission intensity (I(infinity)) increases with higher temperature or a longer dwell time, while both the unbleachable ratio (gamma(UB)) and bleaching time (tau(B)) decrease. The results show that BAC-Si could be bleached faster, while additional amount of BAC-Si could be retained in thermally quenched samples. The lower photostability of the newly quenching activated BAC is impacted by different quenching conditions.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2021)
Article
Optics
Gui Xiao, Binbin Yan, Yanhua Luo, Jianxiang Wen, Desheng Fan, Xinghu Fu, Yushi Chu, Jianzhong Zhang, Gang-Ding Peng
Summary: The study systematically investigated the impact of lead or erbium co-doping on the spectroscopic properties of Bi-doped fibers, demonstrating that lead co-doping can more effectively suppress the formation and emission of bismuth-related active centers, possibly due to the analogy property between Bin+ and Pbn+.
JOURNAL OF LUMINESCENCE
(2021)
Article
Optics
Jianxiang Wen, Ying Wan, Yanhua Dong, Haihong Zhan, Yanhua Luo, Fengzai Tang, Geoff D. West, Fufei Pang, Gangding Peng, Tingyun Wang
Summary: A novel Pb/Bi co-doped silica optical fiber was fabricated using a unique technique, demonstrating strong absorption and wideband luminescence properties. The co-doped fiber performed well in the near-infrared wavelength regime, showing promising potential for various applications.
JOURNAL OF LUMINESCENCE
(2021)
Article
Engineering, Electrical & Electronic
Shuang Tian, Tianyu Yang, Junxi Zhang, Kang Xie, Jiajun Ma, Liang Hong, Yanhua Luo, Zhijia Hu
Summary: A compact multi-band thermal optical switch is proposed by filling liquid crystal in the air holes of a photonic crystal fiber. The switch covers important telecommunication bands with high extinction ratio, and shows sensitivity to ambient temperature, making it suitable for temperature monitoring.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Ghazal Tafti, John Canning, Shuai Wang, Yanhua Luo, Kevin Cook, Gang-Ding Peng
Summary: The impact of drawing pressure on the structure of solid-core structured optical fibres (SOFs) is investigated using a modified model, which shows that the effective pressure is approximately one-fifth less than the applied air pressure. Additionally, the model suggests that when examining birefringent SOFs with thinner walls and asymmetric holes, the reduction in effective pressure is found to be about one-quarter of the applied pressure.
OPTICAL FIBER TECHNOLOGY
(2021)
Article
Physics, Multidisciplinary
Jiaying Wang, Zimeng Wu, Jing Kong, Kuoyuan Wang, Yushi Chu, Yanhua Luo, Jianzhong Zhang, Gang-Ding Peng
Summary: This paper introduces the application of 3D printing in the development of special silica optical fibers (SOFs), including technical aspects and prospects, as well as the material processing flow of SOFs based on 3D digital light processing technology. The authors also demonstrate the efficiency and effectiveness of the continuous debinding-sintering process in producing desirable results, and discuss the remaining challenges and possible solutions in further development of 3D SOFs.
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2022)
Article
Engineering, Electrical & Electronic
Shuen Wei, Ming Lu, Yanhua Luo, Bowen Zhang, Yitao Wang, Matthieu Lancry, John Canning, Gang-Ding Peng
Summary: The study found that an irreversible reduction in optical losses can be achieved through multiple annealing cycles at 800 degrees Celsius. Changes in Raman spectroscopy confirmed densification of the core, and the temperature-dependent loss in the fiber was consistent with modal field overlap at the core-cladding interface.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Ye Tian, Gui Xiao, Yanhua Luo, Jianzhong Zhang, Libo Yuan
Summary: This article reviews the development of nanoliter liquid sensors based on microhole fiber, outlining their characteristics and advantages, and aims to provide useful reference for researchers and students.
OPTICAL FIBER TECHNOLOGY
(2022)
Article
Optics
Jiaqi Huang, Jianxiang Wen, Ying Wan, Yan Wu, Yanhua Luo, Iaobei Zhang, Sujuan Huang, Fufei Pang, Tingyun Wang
Summary: In this study, an Er:YAG crystal-derived silica fiber was fabricated using a CO2 laser-heating drawing technique, and a continuous-wave ring-cavity single frequency fiber laser (SFFL) was constructed. The SFFL exhibited high output power of 32.7 mW, narrow linewidth, excellent stability, and low noise, making it a promising candidate for coherent optical communications, high-precision sensors, laser radars, and other advanced applications.
Article
Optics
Yan Chen, Weiqi Wang, Yuanyuan Yang, Jianxiang Wen, Yanhua Dong, Yana Shang, Yanhua Luo, Tingyun Wang
Summary: Bismuth doped fiber (BDF) and bismuth/phosphosilicate co-doped fiber (BPDF) were fabricated using atomic layer deposition (ALD) combined with modified chemical vapor deposition (MCVD). The spectral characteristics of the fibers were experimentally studied, showing that BPDF has good excitation effect in the O band. A diode pumped BPDF amplifier with a gain over 20 dB from 1298-1348 nm (50 nm) was demonstrated, with a maximum gain of 30 dB observed at 1320 nm and a gain coefficient of around 0.5 dB/m. Simulation results also showed that BPDF has a stronger excited state and greater significance in the O-band compared to BDF, mainly due to the formation of bismuth-phosphorus active centers through phosphorus (P) doping. The high gain coefficient of the fiber is of great importance for the industrialization of O-band fiber amplifiers.
Article
Engineering, Electrical & Electronic
Xiuxiu Chen, Yanhua Dong, Jianxiang Wen, Hongyu Liu, Weizhu Ji, Xiangping Pan, Yanhua Luo, Tingyun Wang
Summary: We report a novel PbS/Er co-doped silica fiber (PEDF) that exhibits improved spectral properties in the O-band (1260-1360 nm). The PEDF achieves a gain exceeding 15 dB in the range of 1150-1360 nm, with a gain improvement of 6.4-10.9 dB compared to PbS-doped silica fiber in the O-band. The higher concentration of Pb and S in the PEDF core, as well as the more concentrated size distribution of PbS nanoparticles, contribute to its enhanced gain characteristics.
IEEE PHOTONICS JOURNAL
(2023)
Article
Optics
Xinghu Fu, Zhexu Huang, Jiahao Zhou, Wendong Zhang, Wa Jin, Guangwei Fu, Feng Liu, Weihong Bi, Yanhua Luo, Gang -Ding Peng
Summary: Based on a self-developed erbium ytterbium co-doped fiber, this paper introduces a sensing system consisting of an amplified spontaneous emission (ASE) source and an optical fiber sensor. The system's spectral test results and ASE source stability are provided. A dual-parameter sensor for temperature and curvature is demonstrated using an in-line cascaded Mach-Zehnder interferometer (MZI), composed of single-mode fiber (SMF) and Nano-Erbium-Ytterbium co-doped fiber (Nano-EYDF). The sensor exhibits different responses to temperature and curvature and can measure them simultaneously using wavelength shifts.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Optics
Rui Zhang, Wenyu Du, Fei Shao, Siqi Li, Yan Kuai, Zhigang Cao, Feng Xu, Yu Liu, Yanhua Luo, Gang-ding Peng, Kang Xie, Benli Yu, Zhijia Hu
Summary: In this article, highly sensitive voltage, thermal and magnetic field fiber sensors were achieved by doping magnetic nanoparticles into E7 liquid crystals filled into photonic crystal fibers (PLCF). The voltage and temperature sensitivity reached 12.598 nm/V and -3.874 nm/°C, respectively. The minimum voltage response time was 48.2 ms. The phase transition temperature Tc of liquid crystal with magnetic dopant was reduced from 60°C to 46°C. The magnetic field sensor based on magnetic nanoparticles-doped PLCF had a sensitivity of 118.2 pm/mT from 400 to 460 mT.
Article
Engineering, Electrical & Electronic
Mengdi Zhang, Jianxiang Wen, Yan Wu, Ying Cao, Yanhua Luo, Xiaobei Zhang, Fufei Pang, Wei Chen, Tingyun Wang
Summary: In this study, we propose a method to generate third-order orbital angular momentum (OAM) modes with reduced losses by cascading two adiabatic mode selective couplers (MSCs), and amplify the generated mode in an all-fiber system. This system has promising applications in long-distance mode division multiplexing technology.
IEEE PHOTONICS JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Lingyue Li, Jianxiang Wen, Zirui Chen, Yanhua Luo, Xiaobei Zhang, Fufei Pang, Gang Ding Peng, Tingyun Wang
Summary: Three Er-doped fibers (EDFs) with different concentrations of Bi ions doping were fabricated by atomic layer deposition combined with modified chemical vapor deposition. Co-doping Bi can dramatically weaken the radiation-induced absorption (RIA). The Bi/Er co-doped fiber (BEDF) showed a 56.0% lower RIA at 1300 nm than that of EDF after a 1500 Gy irradiation treatment. The gain characteristics and laser threshold power of BEDF are less varied than those of EDF before and after irradiation, indicating significant performance improvements in radiation resistance.
OPTICAL MATERIALS EXPRESS
(2023)
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)
