Article
Chemistry, Physical
Kaiming Zhu, Zhanglin Chen, Hui Liu, Xin Yi, Yihuan Wang, Junjie Chen, Xuanyi Yuan, Guanghua Liu
Summary: A series of CaAlSiN3:Ln (Ln=Eu, Ce, Dy, Pr, Tb, Gd, Sm, Tm, Nd) phosphors were successfully prepared by combustion synthesis, and their polychromatic visible afterglow emissions were observed. CaAlSiN3:Eu2+ and CaAlSiN3:Ce3+ showed the best red and yellow long persistent luminescence with persistent times of 4980 s and 4860 s, respectively. Eu2+, Ce3+ co-doped CaAlSiN3 exhibited enhanced red long persistent luminescence with a persistent time of 6300 s, attributed to a more appropriate trap depth distribution.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Ilker Cetin Keskin
Summary: Dy3+, Nd3+, Sm3+ doped Y2O3 nanophosphors were synthesized using the sol-gel method. The structural and optical changes of the doped nanophosphors were compared using XRD and SEM techniques. Radioluminescence and thermoluminescence behaviors were also studied. The study provides insights into the properties and potential applications of these nanophosphors.
CERAMICS INTERNATIONAL
(2022)
Article
Optics
Yuxuan Luo, Danyu Zhang, Shujun Xu, Lianjie Li, Liping Chen, Hai Guo
Summary: YNbO4 (YNO):Bi3+,Ln3+ (Ln = Dy, Eu) phosphors were synthesized by high-temperature solid-phase reaction and their structural properties, optical characteristics, and energy transfer mechanisms were analyzed. The phosphors showed broad emission from Bi3+ ions and sharp peaks from Ln3+ ions, making them suitable for optical thermometry. The YNO:Bi3+,Ln3+ phosphors exhibited high sensitivity and superior thermochromic properties in temperature sensing, with maximum absolute sensitivities and relative sensitivities reaching significant values.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Physical
Junyan Wang, Nianhua Luo, Siyan Peng, Liusai Yang, Minglei Zhao
Summary: In this study, Ln(3+) (Ln=Eu, Tb, Eu/Tb) doping hexagonal BiPO4 nanorods were successfully synthesized and characterized for their structure, morphology, surface chemistry, and fluorescence performance. The results showed that the obtained samples exhibited strong orange-red and green emissions under short-wavelength UV light excitation, with the photoluminescence color being tunable by adjusting the relative doping concentrations of Tb3+ and Eu3+ ions. The room-temperature synthesis method reported in this study could potentially be applied for the preparation of rare-earth doped inorganic luminescent materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Xiaoqing Guo, Shuangju Song, Xue Jiang, Jingru Cui, Yunshuai Li, Wenqing Lv, Haiyan Liu, Yuanyuan Han, Liyong Wang
Summary: A room temperature coprecipitation method for synthesizing phosphors was reported, with SiO2 modification increasing emission intensity. Multicolor phosphors were designed by changing lattice activators. The study also demonstrated the development of transparent photoluminescent film and assembly of red emission LED devices with the prepared phosphors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Environmental
Junpeng Xue, Zhongkai Yu, Hyeon Mi Noh, Bo Ram Lee, Byung Chun Choi, Sung Heum Park, Jung Hyun Jeong, Peng Du, Mingjun Song
Summary: The article discusses the preparation of LaNbO4:1.0%Bi3+/x%Ln(3+) (Ln = Eu, Tb, Dy, Sm) phosphors by solid-state reaction technology, which can emit both Bi3+ and Ln(3+) ions emissions, resulting in multi-color emissions. By taking advantage of the different thermal quenching properties between Bi3+ and Ln(3+) ions, the optical thermometric characteristics of the compounds were evaluated.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Saloni, Atul Khanna
Summary: Solid-state sintering was used to synthesize highly luminescent materials of 1 mol% Re2O3-doped YVO4 (Re = Sm, Dy, Er, and Eu). Characterization techniques, such as XRD, FESEM, Raman, and PL spectroscopy, were employed to examine the structural and optical properties of the materials. YVO4 was found to be a promising host material for visible-light phosphors excited by UV radiation due to its intense light emission in different colors.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Bing Zhao, Feng Chen, Jingjing Ru, Feiyun Guo, Jianzhong Chen
Summary: A series of color-tunable Li2Y4(MoO4)(7): Ln(3+) (Ln = Dy, Eu) phosphors were prepared through solid-state reaction, with emission color ranging from pale yellow to nearly white by adjusting concentrations or excitation wavelength. The results suggest that Li2Y4(MoO4)(7): Ln(3+) (Ln = Dy, Eu) may be used as color-tunable phosphors.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Ilya E. Kolesnikov, Daria V. Mamonova, Mikhail A. Kurochkin, Vassily A. Medvedev, Gongxun Bai, Evgenii Yu. Kolesnikov
Summary: The structural and luminescence properties of Dy3+- and Sm3+-doped LaVO4 concentration series were studied for their potential application as temperature sensors. Nanocrystalline phosphors were synthesized and demonstrated multimode thermal sensing based on the temperature-induced red shift of the charge transfer band. The best thermometric performance was observed for LaVO4:Sm3+ 2 at% sample, with a sensitivity of Sr = 2.07 % K 1 and a resolution of ΔT = 0.2 K at room temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Joana M. F. Barros, Glauber J. T. Fernandes, Marcio D. S. Araujo, Dulce M. A. Melo, Amanda D. Gondim, Valter J. J. Fernandes Jr, Antonio S. Araujo
Summary: Nanostructured lanthanide-silica materials of the Ln-SiO2 type were synthesized by hydrothermal method using cetyltrimethylammonium as a template. The materials were characterized and their properties were found to be influenced by the incorporation of lanthanides. The stability of the materials at high temperatures demonstrated their potential for adsorption and catalysis applications.
Article
Optics
Yichun Zhang, Xingyue Chen, Yunkang Bu, Yu Chen, Jie Fu, Jie Li, Degang Deng
Summary: In this paper, a series of Ca(2-x-y) Sb2O7: xBi(3+), yLn(3+) (Ln = Eu, Sm) fluorescent powder samples were successfully synthesized using the high-temperature solid-phase synthesis method. The samples were characterized structurally and optically using various techniques. The results showed that the prepared samples had an orthogonal spider web structure and exhibited wide emission bands under ultraviolet lamp irradiation. The effect of the doping concentrations of Bi3+ and Ln(3+) (Ln = Eu, Sm) on the luminescence intensity was studied, and the temperature sensitivity of the doped phosphors was determined.
OPTICS COMMUNICATIONS
(2023)
Article
Crystallography
Weili Wang, Shihai Miao, Dongxun Chen, Yanjie Liang
Summary: This study demonstrates the synthesis of KBF:Ln nanophosphors with controlled morphology and commendable photoluminescence properties, showing potential applications in white LEDs and optical thermometry.
Article
Materials Science, Multidisciplinary
Jiawei Zhang, Zhijun Wang, Yecheng Zhu, Xiaoxue Huo, Yu Wang, Hao Suo, Leipeng Li, Panlai Li
Summary: In this study, a multimodal anti-counterfeiting strategy based on Ca3Al2Ge3O12:Bi3+/Ln(3+) was proposed. Efficient energy transfer from Bi3+ to Ln(3+) allows for emission in different colors. Additionally, the phosphor sustains ultraviolet-B (UVB) emission. This work provides new perspectives for advanced anti-counterfeiting and optical storage data systems.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Tirusew Tegafaw, Ying Liu, Son Long Ho, Shuwen Liu, Mohammad Yaseen Ahmad, Abdullah Khamis Ali Al Saidi, Dejun Zhao, Dabin Ahn, Hyunji Nam, Weon-Sik Chae, Sung-Wook Nam, Yongmin Chang, Gang Ho Lee
Summary: This study reports ultrasmall Ln2O3 nanoparticle colloids with high quantum yield in aqueous media. The nanoparticles are modified to ensure colloidal stability and biocompatibility. The results show that these nanoparticle colloids have high quantum yield and great potential as sensitive optical or imaging probes in biomedical applications.
Article
Optics
S. G. Revankar, K. A. Gedekar, P. D. Belsare, S. V. Moharil
Summary: Series of GdA1(3)(BO3)(4):Gd(3+) and lanthanide doped GdA1(3)(BO3)(4) phosphors were synthesized using solid state method. Moderate concentration quenching was observed due to the large distance between lanthanide ions. Efficient sensitization of Eu3+, Tb(3+) and Dy3+ luminescence by Gd3+ was reported for GdA1(3)(BO3)(4). The energy transfer efficiencies were estimated using lifetime measurements.
Article
Materials Science, Multidisciplinary
Zhe Wang, Xueshuang Li, Shengyan Yin, Xingyuan Guo, Weiping Qin
Summary: Monodisperse cubic NaYF4: 20%Yb, 2%Er nanoparticles were synthesized successfully using high-temperature thermal decomposition method. The crystal structure of the nanoparticles changed from cubic to hexagonal phase with the increase in Eu3+ concentration, resulting in decreased upconversion luminescent intensities. Energy transfer between Er3+ and Eu3+ ions was observed with near infrared light excitation.
FUNCTIONAL MATERIALS LETTERS
(2022)
Article
Chemistry, Physical
Shan Bao, Haiyue Yu, Guoyang Gao, Hongyang Zhu, Dingsheng Wang, Peifen Zhu, Guofeng Wang
Summary: Rare earth fluorides and carbon quantum dots show great potential in the WLED field with the ability to achieve tunable full-color luminescence. Through DFT calculation and experimental characterization, it was found that C atoms are more favorable for anchoring Eu3+ single atoms, which provides possibilities for constructing stable and excellent color performance in WLED devices.
Article
Optics
Yadong Jiao, Zhixu Jia, Xiaohui Guo, Zhipeng Zhao, Yasutake Ohishi, Weiping Qin, Guanshi Qin
Summary: In this Letter, we demonstrate a third-order cascaded Raman shift in an all-solid fluorotellurite fiber, which has promising potential for constructing cascaded Raman fiber lasers with a wide range of wavelengths.
Article
Optics
Yuewu Fu, Yu Yang, Tonghe Sun, Ying Tang, Jun Li, Hao Cui, Weiping Qin, Fei Wang, Guanshi Qin, Dan Zhao
Summary: This study introduces an S-band waveguide amplifier using a nanocomposite of nanoparticles and polymer as the gain medium. By optimizing the doping concentration, the strongest emission luminescence at 1480 nm is achieved, and a relative gain of 5.6 dB/cm is observed. This is the first time that S-band amplification has been achieved in a polymer-based waveguide amplifier.
Article
Materials Science, Multidisciplinary
Xiaohui Guo, Fanchao Meng, Zhixu Jia, Yadong Jiao, Yasutake Ohishi, Weiping Qin, Guanshi Qin
Summary: This study demonstrates the generation of dispersive waves at 4 pm using dispersion-engineered fluorotellurite fibers pumped by a femtosecond fiber laser. The fluorotellurite fibers have two zero-dispersion wavelengths and the dispersive wave is generated through a series of processes. The results indicate the potential of dispersion-engineered fluorotellurite fibers for constructing all-fiber 4 pm light sources.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Materials Science, Multidisciplinary
Yao Sun, Yini Li, Wanying Zhang, Peifen Zhu, Hongyang Zhu, Weiping Qin, Guofeng Wang
Summary: This study simultaneously prepared three-color lead halide perovskite phosphors with higher stability and luminous intensity, and successfully applied them in WLEDs, achieving superior color quality and ideal correlated color temperature.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Saroj Thapa, Hongyang Zhu, Alexei Grigoriev, Peifen Zhu
Summary: A novel composite of CsPbBr3 perovskite nanocrystals doped with nickel thiocyanate is reported, demonstrating improved photoluminescence and extended stability. The addition of Ni(SCN)2 reduces surface trap states, resulting in increased photoluminescence quantum yield. These doped nanocrystals exhibit higher photoluminescence efficiency and can be used for stable white light emission.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Yanhui Dong, Dan Zhang, Daguang Li, Heng Jia, Weiping Qin
Summary: This study introduces the concepts of critical concentration and time window as the keys to inhibiting Ostwald ripening, and successfully achieves the controllable synthesis of high-quality nanocrystals through precise controls.
SCIENCE CHINA-MATERIALS
(2023)
Article
Engineering, Environmental
Jing Mao, Dilip Venugopal, Yaoyang Zhang, Peifen Zhu, Guofeng Wang
Summary: Addressing environmental pollution by replacing lead in perovskite optoelectronic devices is a major concern. This study used density functional theory to predict the properties of lead-free compound CsGeBr3 and successfully synthesized it. CsGeBr3 showed the ability to emit white light and demonstrated stability under UV radiation. By combining CsGeBr3 with MOF:Eu3+ phosphors, white light-emitting diode (WLED) devices with commendable color rendering index (CRI) and correlated color temperature (CCT) were fabricated. These WLED devices also efficiently stimulated silicon solar cells, resulting in impressive photoelectric performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Engineering, Electrical & Electronic
Peifen Zhu, Saroj Thapa, Hongyang Zhu, Dilip Venugopal, Alieu Sambou, Yang Yue, Sai Sindhuja Dantuluri, Shubhra Gangopadhyay
Summary: Inorganic metal halide-based perovskites have great potential for solid-state lighting due to their abundant elements, solution processability, high PLQY, and tunable band gap energy and emission. A 3D printing technique was used to fabricate resin-perovskite color conversion layers, simplifying the fabrication process and improving device performance. The printed color conversion layers exhibited exceptional stability and resulted in white lights with adjustable correlated color temperatures and high color rendering indexes.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Peifen Zhu, Saroj Thapa, Hongyang Zhu, Stephen Wheat, Yang Yue, Dilip Venugopal
Summary: This study presents a simple recrystallization process to prepare halide double perovskites (DP) Cs2Ag1-xKxIn0.875Bi0.125Cl6 (x≤0.60) under ligand-free conditions, and improves their optical properties by tuning the composition. With the optimal alloying content, these halide DPs exhibit high-quality white light emission suitable for white LED. This research provides insight into achieving environmentally friendly and high-efficiency white light emission using abundant elements and a low-cost synthesis method.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Physics, Multidisciplinary
Daguang Li, Hao Cui, Guanshi Qin, Weiping Qin
Summary: Under intense light irradiation, pure-white objects exhibit strong light absorption capabilities similar to blackbodies, and generate photon avalanche optical frequency conversion and optical bistable luminescence.
COMMUNICATIONS PHYSICS
(2023)
Article
Chemistry, Physical
Yinxiang Wang, Yanna Zhao, Peifen Zhu, Xiantong Wu, Amina Koshayeva, Liping Ding, Guodong Wei, Ying Su
Summary: Non-metallic nitrogen doping and carbon coating are the most promising strategies to improve the performance of TiO2 photoelectrocatalyst. In this study, a one-stage carbothermal reduction nitridation (CRN) strategy is proposed to enhance the photoelectrocatalytic performance of TiO2 nanowires for hydrogen production. The nitrogen-doped TiO2/Ti(C0.7N0.3) co-catalyst/nitrogen-doped carbon (N-TiO2/Ti(CN)/N-C) core-double shell nanowire arrays (NWAs) exhibit superior PEC performance under simulated sunlight and visible light conditions compared to pure TiO2 NWAs.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Heng Jia, Yingyue Teng, Nan Li, Daguang Li, Yanhui Dong, Dan Zhang, Zhihe Liu, Dan Zhao, Xingyuan Guo, Weihua Di, Weiping Qin
Summary: This article reports a new strategy for constructing a dual stimuli-responsive multicolor security ink, which allows visualization of hidden information through switching luminescence outputs and pH stimulation, and exhibits robust stability.
ACS MATERIALS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Zhe Wang, Xueshuang Li, Shengyan Yin, Xingyuan Guo, Weiping Qin
Summary: Cubic silver phosphate nanoparticles with high photocatalytic activity were successfully prepared with the assistance of trisodium citrate. The photocatalytic activity of Ag3PO4 NPs was verified through photodegradation experiments, and their characteristics were studied using various characterization methods.
NEW JOURNAL OF CHEMISTRY
(2022)