Ca2Ta2O7:Bi3+/Eu3+ 荧光粉在多色可调光学测温和 WLED 中的双重功能应用。

IF 4.1 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Frontiers of Optoelectronics Pub Date : 2024-09-04 DOI:10.1007/s12200-024-00134-2
Jingjing Ru, Bing Zhao, Fan Zeng, Feiyun Guo, Jinhua Liu, Jianzhong Chen
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引用次数: 0

摘要

采用高温固态法制备了一系列Bi3+/Eu3+共掺杂Ca2Ta2O7(CTO:Bi3+/Eu3+)荧光粉,用于双发射中心光学温度计和白光发光二极管(WLED)器件。通过调节Bi3+/Eu3+的掺杂比例,利用Bi3+向Eu3+的能量转移,实现了从绿色到橘红色的可调颜色发射。所设计的 CTO:0.04Bi3+/Eu3+ 光学温度计具有显著的热致变色性、出色的稳定性和可重复性,由于 Bi3+ 和 Eu3+ 离子之间不同的热淬行为,在 300-510 K 温度范围内的最大灵敏度分别为 Sa = 0.055 K-1 (510 K 时)和 Sr = 1.298% K-1(480 K 时)。这些特征表明制备的样品在可视温度计或高温安全标识方面具有潜在的应用前景。此外,利用 CTO:0.04Bi3+/0.16Eu3+ 荧光粉优异的零热淬性能、出色的耐酸碱性和色彩稳定性,通过与市售的蓝色和绿色荧光粉组合,实现了 Ra 值高达 95.3 的 WLED 器件,从而证明了 CTO:0.04Bi3+/0.16Eu3+ 在近紫外泵浦 WLED 器件中的潜在应用。
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Dual-functional application of Ca2Ta2O7:Bi3+/Eu3+ phosphors in multicolor tunable optical thermometry and WLED.

A series of Bi3+/Eu3+ co-doped Ca2Ta2O7 (CTO:Bi3+/Eu3+) phosphors were prepared by high-temperature solid-state method for dual-emission center optical thermometers and white light-emitting diode (WLED) device. By modulating the doping ratio of Bi3+/Eu3+ and utilizing the energy transfer from Bi3+ to Eu3+, the tunable color emission ranging from green to reddish-orange was realized. The designed CTO:0.04Bi3+/Eu3+ optical thermometers exhibit significant thermochromism, superior stability, and repeatability, with maximum sensitivities of Sa = 0.055 K-1 (at 510 K) and Sr = 1.298% K-1 (at 480 K) within the temperature range of 300-510 K, owing to the different thermal quenching behaviors between Bi3+ and Eu3+ ions. These features indicate the potential application prospects of the prepared samples in visualized thermometer or high-temperature safety marking. Furthermore, leveraging the excellent zero-thermal-quenching performance, outstanding acid/alkali resistance, and color stability of CTO:0.04Bi3+/0.16Eu3+ phosphor, a WLED device with a high Ra value of 95.3 has been realized through its combination with commercially available blue and green phosphors, thereby demonstrating the potential application of CTO:0.04Bi3+/0.16Eu3+ in near-UV pumped WLED devices.

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来源期刊
Frontiers of Optoelectronics
Frontiers of Optoelectronics ENGINEERING, ELECTRICAL & ELECTRONIC-
CiteScore
7.80
自引率
0.00%
发文量
583
期刊介绍: Frontiers of Optoelectronics seeks to provide a multidisciplinary forum for a broad mix of peer-reviewed academic papers in order to promote rapid communication and exchange between researchers in China and abroad. It introduces and reflects significant achievements being made in the field of photonics or optoelectronics. The topics include, but are not limited to, semiconductor optoelectronics, nano-photonics, information photonics, energy photonics, ultrafast photonics, biomedical photonics, nonlinear photonics, fiber optics, laser and terahertz technology and intelligent photonics. The journal publishes reviews, research articles, letters, comments, special issues and so on. Frontiers of Optoelectronics especially encourages papers from new emerging and multidisciplinary areas, papers reflecting the international trends of research and development, and on special topics reporting progress made in the field of optoelectronics. All published papers will reflect the original thoughts of researchers and practitioners on basic theories, design and new technology in optoelectronics. Frontiers of Optoelectronics is strictly peer-reviewed and only accepts original submissions in English. It is a fully OA journal and the APCs are covered by Higher Education Press and Huazhong University of Science and Technology. ● Presents the latest developments in optoelectronics and optics ● Emphasizes the latest developments of new optoelectronic materials, devices, systems and applications ● Covers industrial photonics, information photonics, biomedical photonics, energy photonics, laser and terahertz technology, and more
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