Article
Chemistry, Inorganic & Nuclear
Masato Iwaki, Mizuho Onodera, Kazuyoshi Uematsu, Kenji Toda, Mineo Sato
Summary: Energy transfer from Ce3+ to Tb3+ is feasible in energy transition processes for optical devices, especially phosphor-converted white LEDs. However, most co-doped phosphors with Ce3+ and Tb3+ have weak absorption under near-ultraviolet and blue light excitation, limiting their use as near-ultraviolet or blue LEDs. In this study, novel energy transfer luminescent materials, Ba6La2Al3ScO15:Ce3+,Tb3+, were synthesized and showed promising properties for near-ultraviolet LEDs.
DALTON TRANSACTIONS
(2023)
Article
Materials Science, Multidisciplinary
Zhenmin Liu, Qiuling Chen
Summary: In this study, a new red-orange phosphor Na3Bi5(PO4)(6): Sm3+ was successfully synthesized via high temperature solid-state reaction. The structure, luminescence, and thermal stability of the phosphor were investigated. The results showed that Na3Bi5(PO4)(6): Sm3+ exhibited good crystallinity and luminescence properties, making it suitable for developing white LEDs.
Article
Optics
Jing Zhang, Jiayong Si, Xiaoyi Fan, Guihua Li, Gemei Cai
Summary: Using high-temperature solid-state reaction, Ce3+ and Tb3+ single- and co-doped KBaBP2O8 (KBBPO) phosphors were synthesized. The properties of phase purity, crystal structure, surface morphology, decay behavior, thermal stability, luminescence properties, and energy transfer process were investigated. The co-doped phosphors can be effectively excited by near-ultraviolet light, and the emission color varies from dark blue to bright green with the concentration of Tb3+. The energy transfer mechanism between Ce3+ and Tb3+ is dominated by exchange interaction with an efficiency of 59.29%. The optimal KBaBP2O8: 0.02Ce3+, 0.05 Tb3+ phosphor exhibits low thermal quenching, reducing only 19.3% of the initial intensity at 150 degrees C. This new phosphor shows potential for wide-color-gamut display backlights.
JOURNAL OF LUMINESCENCE
(2023)
Article
Materials Science, Multidisciplinary
Piyush Jha, Ayush Khare, Pranav Singh, V. K. Chandra
Summary: Undoped and Eu-doped Gd2Zr2O7 phosphors with different concentrations were prepared using the solid-state reaction method. The emission color of Gd2Zr2O7:Eu3+ phosphors can be tuned over a broad range by varying the Eu3+ concentration under 256 nm excitation wavelength. The synthesized phosphors were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and photoluminescence (PL) spectroscopy. The PL spectra showed the 5D0 -> 7FJ (J = 1, 2, and 3) transition of Eu3+ and described the afterglow properties of these phosphors, which may be suitable for white-LED (WLED) development.
Article
Chemistry, Physical
Nailya S. Akhmadullina, Aleksey Ishchenko, Anton S. Lysenkov, Oleg N. Shishilov, Yury F. Kargin
Summary: The Eu2+/Ce3+, Ce3+/Tb3+, and Eu2+/Tb3+ co-doped aluminum oxynitrides Al5O6N prepared by the sol-gel technique showed non-radiative energy transfer among the rare-earth ions. Optimal contents of the REE ions differed in the co-doped samples compared to singly doped ones.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Junliang Liu, Liping Lu, Xiuling Liu, Xiaoyun Mi
Summary: Y2O3:Eu3+,Tb3+,Ce3+ phosphors were prepared using the co-precipitation method, and the luminescence performance was significantly improved by doping with appropriate amounts of Tb3+ and Ce3+. The study also revealed that Tb3+ could act as a carrier to transfer energy for Ce3+-Eu3+, eliminating metal-metal charge transfer. Moreover, the emission peak position of the phosphor shifted towards the blue region with increasing doping concentration of Tb3+ and Ce3+.
Article
Optics
Han Zhou, Pianpian Wu, Xubo Tong, Hongzhi Zhang, Jin Han, Xinmin Zhang
Summary: This paper reports a simple energy transfer (ET) strategy to enhance Tb3+ emission in Y4Zn4(SiO4)5 (YZS) doped with Ce3+/Tb3+ phosphors under near-UV excitation, allowing the adjustment of emitted light color from blue to green. The improved phosphors show outstanding performance in a WLED device, indicating their potential applications as green-emitting components in near-UV pc-WLEDs.
Article
Materials Science, Multidisciplinary
Yining Wang, Mengmeng Shang, Yixin Sun, Minliang Deng, Xiaole Xing, Peipei Dang, Jun Lin
Summary: By synthesizing Cr3+ doped Ca3Sc2Ge3O12 (CSGG) broadband NIR phosphors, efficient and intelligent NIR light sources are obtained. CSGG:Cr3+ has an emission peak at 785 nm with a FWHM of 106 nm under excitation of 480 nm. Low temperature photoluminescence spectra confirm the broadband NIR emission from two Cr3+ luminescence centers. CSGG:Cr3+ exhibits excellent thermal stability (97% at 100 °C) and low internal quantum efficiency (IQE = 22%). The introduction of Ce3+ enhances IQE from 22% to 61% due to energy transfer and lattice distortion. The mechanism of excellent luminescence thermal stability is explained based on thermal activation energy, Huang-Rhys factor, and thermal ionization effect. The excellent performance of CSGG:Cr3+,Ce3+ NIR phosphors enables their potential applications in night vision security, biological imaging, and nondestructive testing.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Engineering, Electrical & Electronic
Seungyong Shin, Sangmoon Park
Summary: In this study, Ba6Ca3Al2Si6O24:Ce3+/Tb3+/Na+ phosphors were synthesized, and it was found that co-doping Na+ and Ce3+ into the crystal structure can enhance green emission, along with determining the energy transfer mechanism from Ce3+ to Tb3+. Additionally, the CIE coordinates from blue to green regions were monitored, thermal quenching was observed with increasing temperature, and the activation energy of the Tb3+ transition was calculated. The estimated relative quantum efficiency and internal quantum efficiency were obtained for the Ba5.4Ce0.1Tb0.2Na0.3Ca3Al2Si6O24 phosphors.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Shoichiro Nagashima, Kazushige Ueda, Takahisa Omata
Summary: Ce3+-Tb3+ codoped LaLuO3 was prepared by selectively doping Tb3+ at a La or Lu site and doping Ce3+ simultaneously at a La site. X-ray diffraction analysis confirmed the occupation of Ce3+ at a La site and Tb3+ at a La or Lu site, which resulted in the expansion and contraction of the unit-cell volume. Photoluminescence analysis showed that energy transfer occurred from Ce3+ to Tb3+ at both La and Lu sites, leading to the extension of the excitation wavelength range for Tb3+ luminescence in Ce3+-Tb3+ codoped LaLuO3.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Applied
Jiamin Tang, Jiayong Si, Xiaoyi Fan, Yijia Liu, Guihua Li, Gemei Cai
Summary: This study synthesized a series of Ce3+ doped and Ce3+ and Tb3+ co-doped Na2BaCa(PO4)2 (NBCP) phosphors by conventional solid-stated reaction method. The color-tunable emission from blue to green was achieved by adjusting the Tb3+ concentration. The energy transfer efficiency from Ce3+ to Tb3+ ions was found to be as high as 91.5%. The optimal phosphor exhibited excellent thermal stability and has potential applications in general lighting and display fields.
JOURNAL OF RARE EARTHS
(2022)
Article
Chemistry, Multidisciplinary
Nan Ma, Wei Li, Balaji Devakumar, Xiaoyong Huang, Adam F. Lee
Summary: This article describes a high-efficiency near-ultraviolet-excitable green-emitting phosphor Ca2LaHf2Al3O12:Ce3+,Tb3+. The phosphor exhibits high internal quantum efficiency and external quantum efficiency and has been successfully applied in fabricating white LED devices.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Optics
Xiaoxuan Fan, Xiaoyuan Sun, Chunmiao Liu, Wanlu Tian, Min Li, Yongshi Luo, Chunlei Wu
Summary: Sr3Gd2(BO3)(4): Ce3+, Sr3Gd2(BO3)(4): Tb3+ and Sr3Gd2(BO3)(4): Ce3+, Tb3+ phosphors were synthesized and analyzed for their properties. Ce3+ exhibited a bright blue emission band, while Tb3+ showed four emission peaks under UV excitation. A white LED was fabricated using these phosphors, showing that Sr3Gd2(BO3)(4): Ce3+, Tb3+ green phosphors were suitable for white LEDs.
JOURNAL OF LUMINESCENCE
(2022)
Article
Optics
Bohdan Mahlovanyi, Michael Truax, Andriy Luchechko, Yaroslav Shpotyuk, Guang Yang, Roman Golovchak, Andriy Kovalskiy, Jozef Cebulski
Summary: The optical absorption and photoluminescence properties of novel lithium borate glasses doped with Dy and Ce ions were studied. The optical absorption edge of these glasses appeared in the range of 315-390 nm and varied depending on the alkaline-earth metals used as network modifiers. The photoluminescence spectra of Dy-doped glasses exhibited two intense emission bands at 486 nm and 580 nm, while Ce-doped glasses showed a broad band at 340 nm.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Physical
Junmeng Luo, Yu Wang, Shanshan Chen, Sichun Li, Yixuan Zhao, Jiexin Chen, Ziyue Hu, Yuxin Li, He Wang, Bin Deng, Ruijin Yu
Summary: Phosphors with pure red emission were successfully prepared in this study, showing potential applications in LED lighting and fingerprint identification.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Inorganic & Nuclear
Tianyu Bai, Xuemin Wang, Yanyu Dong, Shanghua Xing, Zhan Shi, Shouhua Feng
INORGANIC CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Ying Yu, Meiyu Song, Cailing Chen, Yangyang Du, Chunguang Li, Yu Han, Fei Yan, Zhan Shi, Shouhua Feng
Article
Chemistry, Analytical
Nansong Zhu, Xiaolei Guo, Shirui Pang, Yulei Chang, Xiaomin Liu, Zhan Shi, Shouhua Feng
ANALYTICAL CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Hongbo Li, Xiangdong Liu, Qifei Ying, Chao Wang, Wei Jia, Xing Xing, Lisha Yin, Zhenda Lu, Kun Zhang, Yue Pan, Zhan Shi, Ling Huang, Dianzeng Jia
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Chemistry, Inorganic & Nuclear
Xiangting Zhang, Tianze Shen, Dongxiao Kan, Dan Zhang, Rujia Dong, Zhengce An, Yanhua Song, Keyan Zheng, Ye Sheng, Zhan Shi, Haifeng Zou
INORGANIC CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Xiaolei Guo, Nansong Zhu, Shi-Ping Wang, Guanghua Li, Fu-Quan Bai, Yi Li, Yonghao Han, Bo Zou, Xiao-Bo Chen, Zhan Shi, Shouhua Feng
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Engineering, Environmental
Siyuan Ren, Lingkun Meng, Chenhui Ma, Ying Yu, Yue Lou, Dong Zhang, Yu Han, Zhan Shi, Shouhua Feng
Summary: This study presents a new microporous poly-benzimidazole (MPBI-550) with a frame structure suitable for lithium-ion battery anode, showing remarkable long cycling life, high reversible capacity, and good rate performance. The nitrogen-rich aromatic rings and two-dimensional graphene-like structure contribute to its high performance.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Cailing Chen, Meiyu Song, Yangyang Du, Ying Yu, Chunguang Li, Yu Han, Fei Yan, Zhan Shi, Shouhua Feng
Summary: Cell-membrane-coated nanoparticles, particularly those derived from tumor-associated macrophages (TAMM), show promise as an antitumor therapeutic strategy. TAMM exhibit unique antigen-homing affinity capacity and immune compatibility, with potential to enhance antitumor immunity efficiency via activation of antigen-presenting cells and production of tumor-specific effector T cells in metastatic tumors. TAM-membrane-based photodynamic immunotherapy offers a new personalized approach to tumor therapy.
Article
Chemistry, Multidisciplinary
Siqi Zhang, Youliang Zhu, Denghu Wang, Chunguang Li, Yu Han, Zhan Shi, Shouhua Feng
Summary: Calcium-ion batteries (CIBs) are promising alternatives for large-scale energy storage due to their redox properties, low cost, and high capacity. This study introduces a non-aqueous calcium-ion battery cathode material, PAQS@CNT composite, which shows fast redox kinetics and electron transportation. The electrode exhibits high specific and rate capacities.
Article
Chemistry, Multidisciplinary
Yuxin Liu, Cailing Chen, Yiqiang He, Zhe Zhang, Mingbian Li, Chunguang Li, Xiao-Bo Chen, Yu Han, Zhan Shi
Summary: This study developed a one-pot preparation strategy to significantly enhance photocatalytic activity by creating rich indium vacancies in In2S3 materials. The formation of an atomic p-n homojunction further improved the photocatalytic performance. The photocatalysts exhibited multi-functional properties and achieved high efficiency in hydrogen production, methyl orange degradation, and reduction of heavy metal ions under simulated sunlight.
Article
Engineering, Environmental
Yilin Yang, Ning Wang, Zhihua Wang, Mingda Han, Fei Yan, Zhan Shi, Shouhua Feng
Summary: Sonodynamic therapy (SDT) has emerged as a promising strategy for treating tumors. However, improving the efficiency of sonosensitizers and alleviating the hypoxic tumor microenvironment are major challenges. In this study, a defect-rich titanium-based metal-organic framework (MOFs) was fabricated, and platinum nanoparticles were embedded onto its surface to enhance electron-hole separation and ultrasound-generated singlet oxygen (1O2) production. Perfluorobromooctane was encapsulated in the MOFs as an oxygen carrier. The nanoplatform demonstrated high 1O2 production under ultrasound irradiation and relieved the immunosuppressive tumor microenvironment. Combination with anti-PDL1 antibodies effectively inhibited primary and metastatic tumors.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Ziqi Zhang, Zhe Zhang, Xiaobo Chen, Hanbo Wang, Haiyan Lu, Zhan Shi, Shouhua Feng
Summary: This study aims to design and develop an efficient, durable, and cost-effective electrocatalyst for water splitting by modifying metal-organic frameworks. The experimental results show that the electrocatalyst exhibits better performance and stability than noble metal benchmarks at high current density (1-10 A cm(-2)). The study also reveals that the desorption ability of the catalyst towards the products plays a crucial role in sustaining a stable electrochemical water splitting process at high current density.
Article
Chemistry, Multidisciplinary
Xiaolei Guo, Nansong Zhu, Yue Lou, Siyuan Ren, Shirui Pang, Yiqiang He, Xiao-Bo Chen, Zhan Shi, Shouhua Feng
CHEMICAL COMMUNICATIONS
(2020)
Article
Chemistry, Multidisciplinary
Xiaojing Zhou, Xiaolei Guo, Lili Liu, Haidong Zhai, Qingguo Meng, Zhan Shi, Xishi Tai
