Article
Materials Science, Ceramics
Zhaojie Wu, Li Li, Yongjie Wang, Faling Ling, Zhongmin Cao, Sha Jiang, Guotao Xiang, Xianju Zhou, Yongbin Hua, Jae Su Yu
Summary: A dual-mode optical thermometer utilizing a double-perovskite Mn4+/Sm3+ co-doped luminescent material was designed for precise temperature detection. The thermometer achieves accurate temperature measurement and high sensitivity through the fluorescence intensity ratio (FIR) and decay lifetime techniques.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Raul Isaac Lopez-Esquivel, Juan Carlos Guzman-Olguin, Ismael A. Garduno-Wilches, Laura Esther Lopez Ruiz, Teodoro Rivera Montalvo, Jose Guzman-Mendoza
Summary: In this study, we utilized 395 nm ultraviolet radiation to excite the matrix of barium hafnate doped with europium ions, resulting in the development of an optical temperature sensor. Luminescent analysis conducted within the physiological range revealed significant variations in luminescent intensity across all transitions. When the temperature of the material increased from 289.7 to 323.8 K, a relative sensitivity of 1574.3/T^2 was achieved. The 5D0 -> 7F2 transition exhibited the best temperature resolution (1.1 x 102 K).
APPLIED RADIATION AND ISOTOPES
(2023)
Review
Chemistry, Physical
Qiang Wang, Min Liao, Qiuming Lin, Mingxiang Xiong, Zhongfei Mu, Fugen Wu
Summary: This review examines the current research status of all inorganic thermometers based on fluorescence intensity ratio (FIR) technology, categorizing and analyzing the thermometers in detail, discussing performance parameters, and looking forward to the future development.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Xiao Liu, Siqi Shi, Kai Yang, Liang Chen, Degang Deng, Shiqing Xu
Summary: SrGa2B2O7: Bi3+, Eu3+ phosphors were successfully synthesized through high temperature solid-state method, with their structure, luminescent characteristics and temperature sensing properties studied. The phosphors exhibited high absolute and relative temperature sensitivity, making them a promising optical thermometric material for temperature sensing applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Yongbin Hua, Hong Li, Tian Wang, Jae Su Hu, Li Li
Summary: In this study, the novel double-perovskite (Ca,Sr)2InNbO6:Mn4+ phosphors were investigated and designed as luminescence lifetime thermometers. The Ca2InNbO6:Mn4+ phosphors showed excellent photoluminescence properties and high sensing sensitivity, making them suitable for temperature detection.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Spectroscopy
Fengya Hu, Dong Zhang, Yongjin Wu, Chengmei Sun, Chengcheng Xu, Qingru Wang, Yanru Xie, Qiang Shi, Shuhong Li, Kai Wang
Summary: Cubic type ZnTiO3 nanophosphors were synthesized and studied for their photoluminescence properties with Eu3+/Mn4+ co-doping and Mn4+ modification. The results showed that the surface modification by transition metals improved the temperature sensing performance of the crystals.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Engineering, Environmental
YunCheng Jiang, Ye Tong, SunYueZi Chen, WenNa Zhang, FangFang Hu, RongFei Wei, Hai Guo
Summary: A series of Ca2MgWO6:xEr3+, yYb3+ phosphor samples were synthesized through high temperature solid-state reaction method for optical thermometry. These samples showed intense up-conversion luminescence when excited by 980 nm laser, with enhanced emissions by addition of Yb3+ ions. The phosphors demonstrated a dual-mode temperature sensor and superior thermal stability, indicating potential applications for self-referenced optical thermometry.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Optics
Wang Chen, Minkun Jin, Yuexin Li, Changheng Chen, Jinmeng Xiang, Zexun Li, Chongfeng Guo
Summary: In this study, an all-inorganic rare-earth halide double perovskite Cs2NaErCl6: Yb3+ (CNEC: Yb3+) phosphor was synthesized, which exhibited high sensitivity and multi-mode temperature measurement properties under excitation at 980 nm, making it suitable for monitoring local hot spots in electronic components.
JOURNAL OF LUMINESCENCE
(2023)
Article
Materials Science, Ceramics
Zhiyu Zhang, Jingjing Tang, Minkun Jin, Yuexin Li, Wang Chen, Changheng Chen, Jinmeng Xiang, Chongfeng Guo
Summary: Non-invasive photo-thermal therapy (PTT) with accurate temperature monitoring is important for effective cancer treatment. This study developed dual-function photothermal agents YVO4: Nd3+, Yb3+@IR-780 with real-time temperature control and excellent photothermal conversion. The temperature detection behavior based on fluorescence intensity ratio (FIR) and fluorescence lifetime thermometry were investigated. Results showed the potential application of these photothermal agents in photothermal therapy.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Weidi Xia, Li Li, Yongbin Hua, Faling Ling, Yongjie Wang, Zhongmin Cao, Sha Jiang, Guotao Xiang, Xianju Zhou, Jae Su Yu
Summary: This study synthesized Sr2InSbO6 phosphors with good temperature sensing performances and found that the optimal doping concentration was 3%, resulting in significant temperature sensitivities.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
XiuSha Peng, Jing Chen, YiHang Chen, YunCheng Jiang, RongFei Wei, WeiDong Zhou, HuiJun Li, Hai Guo
Summary: An array of Y2Mg2Al2Si2O12:Bi3+,Eu3+ phosphors with high energy transfer efficiency and excellent temperature sensing properties were successfully synthesized in this study. These samples may have important application value in the field of temperature measurement.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Y. Hua, T. Wang, W. Xia, J. S. Yu, L. Li
Summary: Novel red-emitting Ba2Y0.8Eu0.2NbO6:Mn4+ phosphors were designed for multi-type non-contact luminescent thermometers based on the dual-emission states and temperature-dependent lifetime models. The phosphors showed high sensing sensitivities and have the potential for various applications in thermometers.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Optics
Yanting Zhu, Chenxia Li, Degang Deng, Hua Yu, Hao Li, Le Wang, Changyu Shen, Xufeng Jing, Shiqing Xu
Summary: A series of Eu2+/Cr3+ co-doped BaAl12O19 phosphor was synthesized via traditional high temperature solid stated method, with research on its temperature-sensitive characteristic. The phosphor can be used for thermometry based on fluorescence intensity ratio, utilizing the emissions of Eu2+ ion and Cr3+ ion separated well. Its dual-mode optical thermometry has potential application prospects in the field of optical thermometry.
JOURNAL OF LUMINESCENCE
(2021)
Article
Chemistry, Physical
Liting Qiu, Peng Wang, Xiantao Wei, Fengfeng Chi, Yonghu Chen, Min Yin
Summary: SAMIX phosphor, a mixture of Cr3+-doped and Tb3+-doped phosphors, demonstrates temperature-dependent luminescence properties for Tb3+ and Cr3+, with a strong influence of temperature on the lifetime of Cr3+. The fluorescence intensity ratio technique based on Tb3+ and Cr3+ exhibits high sensitivity for temperature sensing.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Wei Zheng, Baoyu Sun, Yuemei Li, Rui Wang
Summary: This study introduces a new strategy for nanothermometry, utilizing the synergistic effects of Er3+ and inverse fluorescence intensity ratio in Gd2O3:Er3+,Yb3+ nanospheres to significantly enhance absolute sensitivity. Controllable tuning of sensitivity was achieved by adjusting Yb3+ concentration, while also maintaining outstanding signal discriminability.
ACS APPLIED NANO MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Wenming Wang, Xiantao Wei, Hongmei Chen, Yan Pan, Yong Li
Summary: Ba2YF7: Ho3+/Yb3+ nanocrystals embedded in transparent glass-ceramics were fabricated using the traditional melt-quenching technique. Self-crystallization occurred during the formation of precursor glasses, as confirmed by X-ray diffraction patterns. After additional heat treatment, enhanced up-conversion emission and prolonged lifetimes were observed due to increased crystallinity. The red and green emissions of Ho3+ showed tunable behavior under 980-nm excitation when different concentrations of Ce3+ ions were doped into Ba2YF7: Ho3+/Yb(3+)nanocrystals.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Inorganic & Nuclear
Qihao Zhang, Liang Li, Fuwen Liu, Sixing Li, Xiantao Wei, Wenming Wang, Hongmei Chen, Yan Pan, Yong Li
Summary: In this study, Tm3+/Yb3+ co-doped Ba3Gd2F12 oxyfluoride glass-ceramic was synthesized and a high sensitivity optical thermometer was proposed. The crystallization process resulted in an enhancement of emission intensity, prolonged lifetime of Tm3+ ions, and Stark splitting of emission spectra. The optical properties of Ba3Gd2F12: Tm3+ glass-ceramics were explored based on the fluorescence intensity ratio of Tm3+ ion transitions, and a maximum relative sensitivity of 1.02% K 1 at 457 K was achieved.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Fengfeng Chi, Wenjuan Dai, Shengli Liu, Liting Qiu, Xiantao Wei, Yonghu Chen, Min Yin
Summary: Near-infrared phosphor-converted light-emitting diodes (pc-LEDs) are being used for food safety and health monitoring. In this study, Cr3+-doped Al6Ge2O13 (AGO) phosphors were synthesized for near-infrared pc-LEDs. The phosphors exhibited strong blue light absorption and broad near-infrared emission, showing good luminous thermal stability and high output power.
Article
Thermodynamics
Muhammad Tahir Abbas, Sayed Ali Khan, Jiashan Mao, Noor Zamin Khan, Liting Qiu, Jahangeer Ahmed, Xiantao Wei, Yonghu Chen, Saad M. Alshehri, Simeon Agathopoulos
Summary: In this paper, the temperature-sensing capability of GdPO4:1%Dy3+ phosphor was investigated using the approach of fluorescence intensity ratio. The results showed a positive correlation between the intensity of the emission and temperature, with high relative sensitivity. The study suggests that the Dy3+-doped GdPO4 phosphor is a promising candidate for optical temperature sensing and has potential applications in biological research.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Materials Science, Ceramics
Fengfeng Chi, Liangliang Pan, Bin Jiang, Zhangchao Ji, Jie Cheng, Bing Wang, Xiantao Wei, Shengli Liu
Summary: Tb3+ and Eu3+ doped La4GeO8 phosphors with multicolor emission were synthesized and their photoluminescence properties were investigated. The energy transfer from Tb3+ to Eu3+ in La4GeO8 is attributed to quadrupole-quadrupole interaction. The La4GeO8:0.07Tb3+,0.01Eu3+ phosphor exhibits good thermal stability with activation energies of 0.186 eV and 0.187 eV for Tb3+ and Eu3+ ions, respectively. By adjusting the content ratio of Eu3+ to Tb3+, the La4GeO8:Tb3+,Eu3+ phosphors can achieve multicolor luminescence and tunable chromaticity. These findings suggest that La4GeO8:Tb3+,Eu3+ phosphors are promising for solid-state lighting applications.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Liang Li, Qianwen Cao, Jiajia Wang, Zhongyuan Li, Yan Pan, Xiantao Wei, Yong Li
Summary: This article introduces a non-rare earth Mn4+ ion-doped red oxide phosphor with great potential for applications in warm white light-emitting diodes (wLEDs). A series of Ba2LaTaO6 (BLTO): Mn4+ phosphors were successfully synthesized and their luminescence performance and influencing factors were investigated, demonstrating their suitability for wLEDs.
CERAMICS INTERNATIONAL
(2022)
Article
Optics
Fengfeng Chi, Wenjuan Dai, Liting Qiu, Shengli Liu, Xiantao Wei, Yonghu Chen, Min Yin
Summary: In this study, a Cr3+-activated Lu2CaAl4GeO12 phosphor with far-red emitting was prepared, and its thermally stable luminescence was observed.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Fengfeng Chi, Zhangchao Ji, Qian Liu, Bin Jiang, Bing Wang, Jie Cheng, Bin Li, Shengli Liu, Xiantao Wei
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Liang Li, Qianwen Cao, Jing Xie, Wenming Wang, Jiajia Wang, Yan Pan, Xiantao Wei, Yong Li
Summary: Researchers successfully prepared a far-red emitting phosphor doped with Mn4+ ions, which can be efficiently excited and emit intense far-red light. The crystalline properties and luminescence performance were studied in detail, and the crystalline field effect and concentration quenching mechanism of Mn4+ ions in the matrix were explored. The phosphor exhibited high internal quantum efficiency, color purity, and activation energy, making it suitable for the preparation of LED devices for plant cultivation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Wenming Wang, Liang Li, Hongmei Chen, Xiantao Wei, Juanying Jia, Yan Pan, Yong Li
Summary: In this study, Yb3+/Er3+ co-doped YOF glass ceramics were prepared and their luminescence and temperature sensing properties were investigated under 980 nm excitation. The fluorescence intensity ratio (FIR) of the thermal couple energy level (TCEL) and non-thermal couple energy level (NTCEL) was used to evaluate the temperature sensing sensitivity. The increase in pump power resulted in a decrease in relative sensitivity (SR) due to the thermal effect and increased rate of energy transfer and non-radiative relaxation process between dopants and host. The maximum relative sensitivity of this sample reached 1.59 x 10-2 K-1 at 310 K with a pump power of 0.2 W, indicating the prospective application of this glass ceramic in optical thermometry.
Article
Chemistry, Physical
Zhicheng Liao, Liting Qiu, Xiantao Wei, Yonghu Chen
Summary: A novel heat-quenching resistant phosphor Ba2YAlO5 doped with Bi3+ was successfully synthesized using the traditional high temperature solid-state method. The crystal structure and luminescence properties were characterized by XRD, SEM, DR spectra, and PL spectra. The phosphor exhibited a broad-band yellow light with a peak at 571 nm and a FWHM of 125 nm under 324 nm excitation. The integrated emission intensity at 560 K was still close to that at room temperature, indicating its excellent thermal stability. Ba2YAlO5: Bi3+ also showed yellowish white light with high color temperature, making it a promising fluorescent powder for high-power devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Inorganic & Nuclear
Liang Li, Qianwen Cao, Jing Xie, Wenming Wang, Yubei Wang, Hongmei Chen, Zhongyuan Li, Yan Pan, Xiantao Wei, Yong Li
Summary: Altering the local symmetry of an activator by lattice tuning is an effective strategy to optimize the luminescence performance of phosphors. In this study, a novel Mn4+-activated double perovskite phosphor LMTO with A-site defects was successfully prepared. By increasing the randomness of the A-site and the distortion index of the [MnO6] octahedron, the luminescence performance of the phosphor was further enhanced.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Physical
Shaoshuai Zhou, Wei Wang, Xiantao Wei, Min Yin
Summary: By employing a time-gated ratiometric thermometry technique, the temperature was measured based on the luminescence intensity ratio. Sm3+ doped material was used as the temperature responsive signal and reference signal. The experimental results showed high relative sensitivity and good temperature measurement performance within the investigated temperature range.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Weiguo Jing, Mingzhe Liu, Xiantao Wei, Chong-Geng Ma, Min Yin, Chang-Kui Duan
Summary: In this study, the defect levels of transition metal ions in various insulating materials were investigated using density functional theory. The results show that the proposed calculation scheme is effective in predicting the valence states and defect levels of transition metal ions, which can aid in the design and optimization of optical materials.
Article
Chemistry, Inorganic & Nuclear
Liting Qiu, Peng Wang, Jiashan Mao, Zhicheng Liao, Fengfeng Chi, Yonghu Chen, Xiantao Wei, Min Yin
Summary: With the increasing demand for non-contact temperature sensing, the development of an excellent optical thermometer has become more compelling. In this study, a Cr3+-doped InTaO4 phosphor was prepared and investigated for its temperature-dependent fluorescence intensity and fluorescence lifetime, achieving high-sensitivity temperature sensing in two different modes. Additionally, a time-resolved technique was also presented, which showed improved temperature sensitivity and resolution. The results demonstrate the promising potential of InTaO4:Cr3+ phosphor in multi-mode high-sensitivity optical thermometry and temperature imaging.
INORGANIC CHEMISTRY FRONTIERS
(2022)