Review
Chemistry, Multidisciplinary
Thais K. L. Rezende, Helliomar P. P. Barbosa, Luiz F. F. dos Santos, Karmel de O. Lima, Patricia Alves de Matos, Tayana M. M. Tsubone, Rogeria R. Goncalves, Jefferson L. L. Ferrari
Summary: Light-based therapies and diagnoses, such as photodynamic therapy (PDT), have been widely used in various fields of medicine. PDT requires a light source and a light-sensitive compound to detect and destroy cancer cells. However, one of the challenges is the depth of light penetration into biological tissues.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
H. T. Haile, F. B. Dejene
Summary: In this study, the structural, morphological, and photoluminescence properties of Y2SiO5:Ce3+ thin films deposited by pulsed laser deposition at varying oxygen deposition pressures were investigated. It was found that higher oxygen deposition pressures led to increased photoluminescence intensity, and the size of the nanoparticles deposited in the films ranged from 0.39 to 0.55 μm. The maximum average activation energy was obtained for films deposited at 1.5 mTorr, with a value of 0.438 eV.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Valter Kiisk, Michal Novotny, Margus Kodu, Siim Pikker, Tea Avarmaa, Jan Remsa, Jan Lancok, Martin Vrnata, Raivo Jaaniso
Summary: Many research activities focus on functional luminescent materials based on metal oxides and trivalent rare earth ions. Specific applications require optimizing material preparation, annealing, and excitation-detection techniques. In this study, pulsed laser deposition was used to obtain thin TiO2 films containing 1 at% of samarium or neodymium impurity ions. The effects of pulsed laser annealing on their structure and luminescent properties were investigated.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Ceramics
Ping Li, Liuyong Zhao, Song Wang, Xiaohui Zhang, Huaiyuan Jiang, Ruizhen Liu, Nengchuang Zhao, Jian Cheng, Caili Xu, He Zhao, Renliang Lyu
Summary: This study successfully synthesized rare-earth ions doped upconversion luminescent microparticles using the impinging stream method, optimizing the conditions to achieve high yield and good monodispersity of the particles.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Masayuki Nogami, Vu Xuan Quang, Ho van Tuyen, Le Xuan Hung
Summary: Rare-earth doped glasses have shown potential applications in light-emitting devices. However, developing silicate glasses with excellent photoluminescence performance remains difficult. In this study, we investigated the reduction of rare-earth ions in doped glasses through heating in a hydrogen gas atmosphere or X-ray irradiation. We successfully synthesized Al2O3-SiO2 glasses doped with Sm3+ and Eu3+ ions, which exhibited strong photoluminescence. The Sm3+ and Eu3+ ions were reduced to their divalent states when heated in hydrogen gas, while only Sm3+ ions were reduced to Sm2+ ions when irradiated with X-rays. It was also found that the reduced Sm2+ ions in the glass could easily be oxidized to Sm3+ ions by heating in air. The fast redox reaction between Sm3+ and Sm2+ ions makes the Sm3+-doped Al2O3-SiO2 glasses suitable for X-ray therapy and sensor applications.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Physics, Condensed Matter
S. Q. Asadullayeva, G. M. Fatullayeva, N. A. Ismayilova
Summary: The study investigated the photoluminescence properties of (La2O3)(0.05)(As2S3)(0.90)(Er2O3)(0.05) combination in the visible region at different temperatures. It was found that the inclusion of two impurities led to the disappearance of the maximum peak belonging to As2S3 and a sharp increase in the photoluminescence spectrum intensity. The sharp increase in photoluminescence intensity was attributed to the interatomic transition of Er3+ ion in the 600-750 nm region.
SOLID STATE COMMUNICATIONS
(2021)
Article
Optics
Xin Xu, Peigeng Han, Daoyuan Zheng, Kaimin Du, Chunxia Li, Feng Liu, Ruiling Zhang, Keli Han
Summary: In this study, a Bi3+-alloyed double perovskite, Cs2NaEr0.5Bi0.5Cl6, was reported to exhibit strong NIR-triggered UC and NIR-II emission. The efficient energy transfer between Er3+ and self-trapped exciton states induced by corporation of Bi3+ ions contributes to the strong UC emission. Bi3+ ions act as diluters to suppress energy loss and enhance UC and NIR-II emission. A water-resistant Cs2NaEr0.5Bi0.5Cl6/polydimethylsiloxane film was prepared, demonstrating the potential of Cs2NaEr0.5Bi0.5Cl6 as a high sensitivity UC thermometry and NIR imaging with high signal to noise ratio.
LASER & PHOTONICS REVIEWS
(2022)
Article
Chemistry, Inorganic & Nuclear
Jingbo Yu, Lili Hu, Jinjun Ren
Summary: The study found that La3+ ions have promotion and suppression effects on the crystallization of PbF2, with a stronger attraction ability compared to Pb2+ ions. Intensive upconversion visible luminescence was observed in rare earth ion-doped oxyfluoride glasses, with most Er3+ ions dissolved in the LaF3 crystal.
INORGANIC CHEMISTRY
(2021)
Review
Chemistry, Inorganic & Nuclear
Daniele Paderni, Luca Giorgi, Vieri Fusi, Mauro Formica, Gianluca Ambrosi, Mauro Micheloni
Summary: Rare earth elements (REEs) are a group of elements playing critical roles in modern applications, with scientists showing strong interests in their new applications. However, the development of chemical sensors suitable for selective sensing of REE ions remains a challenging task due to their complicated coordination properties.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Chemistry, Physical
Shi-Yu Liu, Zong-Yuan Lin, Ye-Ren Chang, Yu-Tso Liao, Po-Hsun Wu, Ssu-Yen Huang, Wen-Chin Lin, Fang-Yuh Lo
Summary: Several studies have shown that rare earth elements can be used to regulate the magnetic anisotropy of garnet films. In this study, rare earth iron garnet (REIG) thin films were fabricated using pulsed laser deposition. The films exhibited different strain and crystal orientation depending on the ionic radius of the rare earth metal ions. The films also showed strong perpendicular magnetic anisotropy and different sensitivities to light at different wavelengths, which could be useful for high-density nano-scale magnetic information storage.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Spectroscopy
Stefan Andrei Irimiciuc, Georgiana Bulai, Silviu Gurlui
Summary: This study investigates the effects of rare earth element doping on the structural and dynamic properties of laser induced plasmas and thin films of cobalt ferrite. The addition of rare earth elements reduces the drift velocities of plasma structures and leads to complex dynamics, suggesting a re-sputtering effect at the film's surface. The excitation temperatures of main elements increase with higher rare earth content, suggesting radiative collision events.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2022)
Article
Materials Science, Ceramics
Xin Li, Jiangkun Cao, Mokang Huang, Mingying Peng
Summary: Bismuth (Bi) doped glasses and fibers have gained attention for their broad and long lived near infrared (NIR) emission. Codoping rare earth ions is a feasible way to modulate the NIR emission properties of Bi, but limited success have been achieved. By investigating nonactive rare earth (RE) codoped aluminoborate glasses, it is found that the addition of nonactive RE ions changes the glass structure and optical basicity, altering the optical properties of Bi.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Nanoscience & Nanotechnology
Scott E. Crawford, James E. Ellis, Paul R. Ohodnicki, John P. Baltrus
Summary: Rare earth elements are critical to various technologies, but increasing interest in boosting domestic REE production has been driven by concerns over demand and monopolistic markets. Metal-organic frameworks show promise in sensing rare earth elements, with the ability to improve sensing efficacy through structural modifications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Chemistry, Multidisciplinary
Yanze Wang, Bing Chen, Feng Wang
Summary: Thermal quenching, characterized by the loss of light emission with increasing temperature in luminescent materials, poses challenges in technological applications such as lighting, displays, and imaging. By engineering energy transfer routes, methods have been established to combat thermal quenching in upconversion nanoparticles. Recent efforts in overcoming thermal quenching of upconversion are summarized in this review.
Article
Materials Science, Multidisciplinary
Dongwen Gao, Li Wang, Xueqiong Su, Jin Wang, Ruixiang Chen
Summary: This study investigated the impact of a magnetic field on the optical properties of Co-doped ZnS nano films. By manipulating the growth structure of the film during deposition using a magnetic environment, the optical properties were enhanced. Experimental results under magnetic field conditions were consistent with simulation results, confirming the improved optical properties.
Article
Materials Science, Ceramics
Biao Zhang, Zhaoxin Zhong, Jiaqi Tang, Jian Ye, Feng Ye, Zhiguo Zhang, Qiang Liu
Summary: In this research, a series of three-dimensional architectures formed by SiC nanowires with different microstructures were fabricated to enhance the low-frequency wave absorption ability. The bamboo-shaped SiC nanowires in the felt increased the permittivity and conductivity loss and produced multiple scattering effects on the incident EM waves. The density of the SiC nanowire felt was as low as 0.022 g/cm3 due to the high porosity of 3D networks, fulfilling the requirements of lightweight and efficient electromagnetic wave absorption.
CERAMICS INTERNATIONAL
(2023)
Article
Physics, Applied
Jiaming Li, Xudong Qi, Kai Li, Ming Lu, Zhaoliang Yu, Duo Wang, Shichong Xu, Enwei Sun, Zhiguo Zhang
Summary: A photoluminescence (PL) method is proposed to characterize the phase transition processes of Li+/Er3+:BaTiO3 (BLET) ferroelectric ceramics using infrared fluorescence intensities. The fluorescence intensities are used to detect the phase transition of BLET ceramics in multiple phase transition regions. The change in fluorescence intensities at the phase transition is attributed to a variation in the radiative transition probability of the I-4(13/2) level. By elucidating the relationship between fluorescence properties and the phase structure, our research contributes to a better understanding of the PL characteristics and phase structure of ferroelectric materials, and further enhances the application potential of PL methods in the detection of ferroelectric phase transition.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Yixiao Yang, Enwei Sun, Zhimin Xu, Huashan Zheng, Bin Yang, Rui Zhang, Wenwu Cao
Summary: PbTiO3-based piezoelectric ceramics are crucial for developing electromechanical transducers. This study focuses on co-doping donor and acceptor in Pb(Mg1/3Nb2/3)O-3-30PbTiO(3) ceramics to achieve large piezoelectric coefficient and high mechanical quality factor. By optimizing the composition, the co-doped ceramics exhibit excellent performance with enhanced piezoelectric properties.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Meng Kou, Feng Qin, Yongda Wang, Xiyu Zhang, Zheng Hu, Zhiguo Zhang
Summary: Environmental heavy atoms can enhance the room temperature phosphorescence emissions of Gd-HMME through the external heavy atom effect. In this study, a method is used to separate the external effect from the total effect and to define a quantity that describes the intrinsic nature of the external effect. The phosphorescent transition rate (kP) increases linearly with the environmental Gd3+ concentration, while the slope kappa is independent of Gd3+ concentration and only depends on the type of environmental heavy atoms.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Engineering, Multidisciplinary
Yongda Wang, Feng Qin, Honglin Zhang, Meng Kou, Zhiguo Zhang
Summary: A high-performance oxygen sensor is developed using room temperature phosphorescence. The sensor probe is made of Sol-gel matrix doped with Palladium (II) octaethylporphyrin (PdOEP) and has a sensitivity of 29.23 kPa(-1). The sensor incorporates a dual-channel structure to eliminate excitation source fluctuations and uses a photomultiplier tube equipped photon counter to enhance the signal-to-noise ratio. The detection limit of the system is 0.1 Pa with an indication error of +/- 1.5%.
Article
Optics
Zhiyang Sun, Yongda Wang, Zhiguo Zhang
Summary: The study investigates the impact of port fraction on the radiant flux of an integrating cavity and establishes a theoretical model for light propagation in an arbitrary-shaped cavity. The relationship between port fraction, radiant flux, and diffuse reflectance is derived and experimentally validated in the absence of gas absorption. A method for measuring the diffuse reflectance of the integrating cavity is proposed, which effectively minimizes the influence of light source fluctuations on the measurement.
APPLIED PHYSICS B-LASERS AND OPTICS
(2023)
Article
Engineering, Electrical & Electronic
Lian Cui, Wenwu Cao
Summary: This study investigated the effective coercive field E-c(eff) of [001](c) poled 0.71Pb(Mg1/3Nb2/3)O-3-0.29PbTiO(3) (PMN-0.29PT) single crystals inside an ultrasonic curved array transducer as a function of frequency f from 10 kHz to 4 MHz. The results showed that Eeff c monotonically increased with f in the form of f(beta), reaching more than 6 kV/cm at 4 MHz, which is three times the conventional coercive field. The beta value changed at around 400 kHz due to a transition in domain switching. The study also revealed that the E-c(eff) of PMN-0.29PT single crystals under clamped boundary conditions was larger than that under free boundary conditions, indicating that strain confinement hinders domain switching in ferroelectric crystals. These quantitative results of E-c(eff) versus f provide valuable guidelines for designing high-frequency medical array transducers using PMN-PT single crystals.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Optics
Junqi Cui, Wei Xu, Miao Yao, Longjiang Zheng, Chunhai Hu, Zhiguo Zhang, Zhen Sun
Summary: A novel strategy using convolutional neural network for luminescence thermometry is proposed, which can autonomously select and extract multiple temperature-dependent features for regression temperature calculation, fully utilizing the temperature-dependent spectral data. Compared with traditional ratiometric technology and multiple linear regression method, the proposed method exhibits significantly higher accuracy, indicating the potential of deep learning in the field of luminescence thermometry.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Physical
Meng Kou, Feng Qin, Weiming Lu'', Zheng Hu, Zhiguo Zhang
Summary: Modern photodynamic therapy relies on the interaction between photosensitizer and oxygen to produce singlet oxygen. Energy transfer from the triplet excited state of photosensitizer to the excited state of oxygen is well-established, while the transfer from the singlet excited state is believed to be insignificant. However, our study provides evidence of energy transfer between the singlet excited state and oxygen in the production of singlet oxygen. This finding has been verified through fluorescence intensity measurements and ultrafast pump probe experiments.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Engineering, Mechanical
Ye Yuan, Bin Liu, Han Jia, Chi Zhang, Zhiguo Zhang, Suhao Wang, Yuzhen Yang, Xun Wang, Xiaobin Cheng, Zhaoli Yan, Jun Yang
Summary: This article introduces a nondestructive testing method based on honeycomb structure. By analyzing and experimental testing, it is found that there is a special wave propagation gap in the honeycomb structure, which can be used to detect debonding defects. This method detects and locates the debonding defects in the honeycomb structure with high sensitivity and efficiency, and it has great potential to be widely used in field tests.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Leiyang Zhang, Ruiyi Jing, Hongliang Du, Yunyao Huang, Qingyuan Hu, Yuan Sun, Yunfei Chang, Denis Alikin, Xiaoyong Wei, Wenwu Cao, Vladimir Shur, Shujun Zhang, Dragan Damjanovic, Li Jin
Summary: This research introduces a novel approach to texture engineering in order to enhance the electrostrictive effect. The (Ba0.95Ca0.05)(Ti0.88Sn0.12)O-3 (BCTS) ceramics exhibit ultrahigh electrostrictive strain and negligible hysteresis, offering great potential for advancements in this field.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Acoustics
Hengli Zhao, Zhaojiang Chen, Guangbin Zheng, Chunying Wang, Wenwu Cao
Summary: The high-field properties of the PIN-PMN-PT single crystal/polymer composites were investigated, and it was found that the composite exhibited superior electromechanical performances under high ac field.
Article
Materials Science, Ceramics
Wei Xu, Fengze Bai, Longjiang Zheng, Chunhai Hu, Zhiguo Zhang, Yungang Zhang, Zhen Sun
Summary: By doping Ga3+ in garnet-structured phosphors, the upconversion luminescence can be significantly enhanced, leading to color switching in response to temperature change.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Jinhui Fan, Xiaoyan Lu, Wenwu Cao
Summary: Polarization qualification can be achieved on either a macroscopic or nano/micro scale using various measurement techniques. However, visualizing and quantifying polarization distribution in the micron to millimeter scale remains challenging.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Meng Kou, Feng Qin, Yongda Wang, Xiyu Zhang, Zheng Hu, Hua Zhao, Zhiguo Zhang
Summary: In this study, a method was proposed to accurately determine the Stern-Volmer constant (K(SV)) of the photosensitizer by measuring the oxygen-dependent consumption of 1,3-diphenylisobenzofuran. The consumption time (Δ) was introduced as a measurable quantity and obtained from the absorption spectrum with a high signal-to-noise ratio. Experimentally, rose Bengal and metalloporphyrin were used to validate this method, and the K(SV) values obtained were 43(1) kPa(-1) and verified the accuracy of this method.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(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)
