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Ye S, Lei L. Multichannel ratiometric fluorescence temperature sensing based on SrYbF5: Nd nanocrystals. Chem Phys Lett 2023. [DOI: 10.1016/j.cplett.2023.140447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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Zhou L, Chen Y, Shen Y, Lin J, Fu J, Lei L, Ye R, Deng D, Xu S. Designing Optical Thermometers Using Down/Upconversion Ca 14Al 10Zn 6O 35: Ti 4+, Eu 3+/Yb 3+, Er 3+ Thermosensitive Phosphors. Inorg Chem 2022; 61:10667-10677. [PMID: 35793498 DOI: 10.1021/acs.inorgchem.2c00769] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Down/upconversion Ca14Al10Zn6O35 inorganic phosphors codoped with Ti4+/Eu3+ or Yb3+/Er3+ were prepared. The crystal structure and downconversion luminescence properties of Ca14Al10Zn6O35:Ti4+, Eu3+ phosphors were studied in detail. Ti4+ and Eu3+ occupied Al3+ and Ca2+ sites in the host lattice, respectively. Under the excitation of 273 nm, the emission peak in the 300-570 nm band originated from the 2T2 → O2- transition of Ti4+. The f-f transition of Eu3+ ions generated multiple peaks in the 570-800 nm range. The emission intensity of Ti4+ and Eu3+ ions can be used as a fluorescence intensity ratio (FIR) signal. Based on the FIR technology, the maximum relative sensitivity (Sr) and the minimum temperature uncertainty (δT) reached 1.41% K-1 and 0.07 K, respectively. Meanwhile, the temperature-sensing behaviors were explored by the temperature-dependent upconversion spectra of Er3+- and Yb3+-codoped Ca14Al10Zn6O35 phosphors. Based on the fluorescence intensity ratio of thermal coupling levels (Er3+:2H11/2/4S3/2), the maximum Sr and minimum δT of upconversion phosphors reached 1.28% K-1 and 0.08 K in the temperature range of 293-473 K, respectively. Ca14Al10Zn6O35:Ti4+/Eu3+ (Yb3+/Er3+) phosphors realize temperature sensors with higher relative sensitivity, and it is a good candidate material for optical temperature measurement.
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Affiliation(s)
- Liuyan Zhou
- College of Materials and Chemistry, China Jiliang University, Hangzhou 310018, China
| | - Yanling Chen
- Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province, Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou 310018, China
| | - Yuyu Shen
- Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province, Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou 310018, China
| | - Jianhua Lin
- Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province, Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou 310018, China
| | - Jie Fu
- Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province, Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou 310018, China
| | - Lei Lei
- Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province, Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou 310018, China
| | - Renguang Ye
- Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province, Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou 310018, China
| | - Degang Deng
- Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province, Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou 310018, China
| | - Shiqing Xu
- Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province, Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou 310018, China
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Prasad M, Rai VK. Simultaneous effects of synthesis temperature and dopants on MgWO 4UC phosphors. Methods Appl Fluoresc 2022; 10. [PMID: 35472670 DOI: 10.1088/2050-6120/ac6ab7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 04/26/2022] [Indexed: 11/11/2022]
Abstract
A sequence of coactivated divalent-metal tungstate Er3+/Yb3+/Mn4+: MgWO4 phosphors have been successfully developed to study the effect of synthesis temperature on the crystal structure, surface morphology, fluorescence, temperature sensing and the dynamics involved in the processes. Upconversion (UC) intensity of the Er3+/Yb3+: MgWO4 phosphors increased by ~ 109 and ~ 778 times on increasing the synthesis temperature from 800 ºC to 1000 ºC and 1200 ºC. UC intensity of the Er3+/Yb3+/Mn4+: MgWO4 phosphors has been significantly improved up to ~ 90 times via charge compensation. The incorporation of Mn4+ in the Er3+/Yb3+ codoped crystal system shifted the UC spectra from sharp green peaks to broadband emission along with amended sensing abilities. The ratiometric techniques of thermally coupled stark sublevels of the Er3+ have been used to achieve a wide temperature range (300 - 623K). The prepared nanophosphors show maximum absolute & relative sensitivities ~ 25.86×10-3 K-1 @453K and ~ 10.39×10-3 K-1 @303 K respectively with an accuracy of ± 0.42K@303K.
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Affiliation(s)
- Manisha Prasad
- IITISM, Department of Physics, Dhanbad, Jharkhand, 826004, INDIA
| | - Vineet Kumar Rai
- Laser and Spectroscopy Laboratory Department of Physics, IITISM, Dhanbad, 826004, Dhanbad, Jharkhand, 826004, INDIA
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PATTNAIK SASANK, Mondal M, Mukhopadhyay L, Basak S, Rai VK, Giri R, Singh V. Frequency upconversion based thermally stable molybdate phosphors in temperature sensing probe. NEW J CHEM 2022. [DOI: 10.1039/d2nj01105k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Er3+-Yb3+ co-doped NaGd(MoO4)2 phosphors with different concentrations of Er3+ and Yb3+ ions have been successfully synthesized via a high-temperature solid-state reaction method. Phase confirmation and morphological studies have been done...
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