Er3+ activated BaLaGaO4 multifunctional green phosphors for optical thermometers and WLEDs DOI

Xingyang Peng,

Ruirui Cui, Xiang Guo

et al.

Journal of Rare Earths, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 1, 2024

Language: Английский

Study on a Highly Thermostable Dy3+-Activated Borophosphate Phosphor DOI

Conglin Liu,

Youkui Zheng,

Qin Yue

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(14), P. 6483 - 6492

Published: March 26, 2024

Constructing a phosphor with multifunctional applications is an imperative challenge. Especially, highly thermostable luminescence of indispensable for stable white-light-emitting diodes (LEDs). Nevertheless, good thermal quenching resistance behavior unfavorable fluorescence intensity ratio (FIR)-based optical temperature sensor. Herein, Ba3(ZnB5O10)PO4 (BZBP)-based successfully achieved via replacing Ba2+ Dy3+, demonstrating simultaneously promising lighting and thermometry utilizations. Under the excitation 350 nm, title only loses 12% initial when up to 473 K, ensuring sufficient thermostability white-LED lighting. The device fabricated using emits high-quality white light high color rendering index (Ra = 93) low correlated (CCT 3996 K). Meanwhile, yellow blue emission intensities demonstrate downtrend difference rising temperature. Temperature sensing properties are assessed through FIR technology. maximal relative sensitivity reaches as 0.0379 K–1 at 298 K. These results reveal that has great potential indoor applications.

Language: Английский

Citations

26
Multiple optical thermometry and dynamic anti-counterfeiting based on multicolor luminescence of SrY2O4:Bi3+,Er3+ phosphor DOI

Qingqing Yu,

Fumin Lu,

Ligan Ma

et al.

Ceramics International, Journal Year: 2024, Volume and Issue: 50(9), P. 15417 - 15425

Published: Feb. 2, 2024

Language: Английский

Citations

24
Dual-emitting Dy3+/Eu3+ co-doped SrLaGaO4 phosphor: Tunable luminescence, energy transfer and ratiometric temperature sensing DOI
Yuefeng Qiu, Ruirui Cui, Min Zhang

et al.

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1304, P. 137622 - 137622

Published: Jan. 22, 2024

Language: Английский

Citations

22
Harnessing the Dual‐Mode Luminescence of Er/Yb Co‐Doped SrLaLiTeO6 Double Perovskite Phosphors for Remarkably Wide Range Temperature Sensing and NIR pc‐LEDs DOI

Pooja Kaithrikkovil Varriam,

Subodh Ganesanpotti

Laser & Photonics Review, Journal Year: 2024, Volume and Issue: 18(10)

Published: May 30, 2024

Abstract The ever‐increasing demand for efficient and economic photonic materials has hastened the quest robust, multifunctional phosphors. Herein, a dual‐mode luminescent SrLaLiTeO 6 :Er 3+ , Yb double perovskite phosphor whose concentration‐dependent up down‐conversion luminescence are investigated underlying mechanisms discussed. Temperature‐dependent up‐conversion of 2 H 11/2 → 4 I 15/2 transition exhibits negative thermal quenching, owing to thermalization process from S 3/2 level. Temperature dependent Raman analysis confirms decrease in phonon lifetime 0.43 0.28 ps indicating an increased number decay channels, which explains rapid quenching emission at elevated temperatures. diverse thermally coupled levels contributes exceptionally high relative sensitivity 4.49 %K −1 140 K. A maximum sensitivity, r 0.84 (698 K) is obtained Raman‐PL intensity ratio (RPIR) band (719 cm ) 986 nm ( Er . Hence, by employing multi‐mode temperature sensing techniques single can be used optical thermometry broad range 90 698 In addition, Near Infra‐Red (NIR)‐II corresponding 13/2 shows excellent stability, maintaining 72% room 500

Language: Английский

Citations

18
Preparation of (Lu,Y) 3(Al,Sc,Cr) 2Al 3O 12 phosphor ceramics with high thermal stability for near-infrared LED/LD DOI Creative Commons
Yuelong Ma, Xingcan Li, Lan Wu

et al.

Journal of Advanced Ceramics, Journal Year: 2024, Volume and Issue: 13(3), P. 354 - 363

Published: Jan. 29, 2024

Near-infrared (NIR) phosphor-converted light-emitting diodes/laser diodes (LEDs/LDs) are prospective lighting sources for NIR spectroscopy. However, developing a phosphor material with desired thermal robustness and high photoelectric efficiency is crucial challenge its applications. In this work, based on the cationic radius matching effect, series of (Lu,Y)3(Al,Sc,Cr)2Al3O12 ceramics (LuYScCr NIR-PCs) were fabricated via vacuum sintering. An excellent stability (95%@150 oC) was obtained in prepared NIR-PC, owing to weak electron phonon coupling effect (small Huang Rhys factor). Being excited at 460 nm, NIR-PCs realized broadband emission (650-850 nm) an IQE 60.68 %. Combining LED/LD chips, maximum output power encapsulated LED prototype 447 mW @ 300 mA as 18.6 % 180 mA, LD 814mW 2.5 A. The working temperatures 70.8 oC (LED) 102.8 3 A (LD), respectively. Finally, applied food detection verified study, demonstrating anticipated application prospects future.

Language: Английский

Citations

14
Multi‐mode temperature sensing of Lu2WO6:Er3+,Yb3+ up‐conversion materials DOI
Mengjie Feng, Lianjie Li, Jiajia Guo

et al.

Journal of the American Ceramic Society, Journal Year: 2024, Volume and Issue: 107(7), P. 4766 - 4776

Published: Feb. 22, 2024

Abstract To develop multi‐mode fluorescence thermometer with high performance, Lu 2 WO 6 :Er 3+ ,Yb materials were successfully designed and prepared. Under 980 nm excitation, the material can achieve accurate temperature measurement under three models. The above models are based on different parameters, including two FIR (fluorescence intensity ratio) derived from thermally coupled energy levels (TCELs) ( H 11/2 / 4 S 3/2 ) non‐thermally (NTCELs) F 9/2 ), as well lifetime (FL) monitoring of level transition to ground state. In mode TCELs, maximum relative sensitivity R‐max minimum resolution 1.261 %K –1 0.237 K, respectively. repeatability five‐cycle measurements is 98.5%. value FL reach 0.862 0.201 −1 , obtained outcomes suggest that might be considered promising candidates for three‐mode thermometry.

Language: Английский

Citations

14
The dual-model up/down-conversion green luminescence of NaSrGd(MoO4)3: Er3+ and its application for temperature sensing DOI Creative Commons
Zein El Abidine Aly Taleb, Kamel S. Saidi, Mohamed Dammak

et al.

RSC Advances, Journal Year: 2024, Volume and Issue: 14(12), P. 8366 - 8377

Published: Jan. 1, 2024

Intense green up/down conversion emission and high-sensitivity optical thermometry.

Language: Английский

Citations

11
Er3+-activated Na0.5La0.5MoO4 multifunctional molybdate phosphors for optical thermometers and white LEDs DOI
Feiyan Xie,

Junqiang Gu,

Dekang Xu

et al.

Ceramics International, Journal Year: 2024, Volume and Issue: 50(14), P. 25656 - 25666

Published: April 24, 2024

Language: Английский

Citations

11
High recorded color rendering performance of single-structured Ce,Mn:Y 3(Al,Sc) 2Al 3O 12 phosphor ceramics for high-power white LEDs/LDs DOI Creative Commons

Xuanchu Liu,

Congcong Yang,

Yanbin Li

et al.

Journal of Advanced Ceramics, Journal Year: 2024, Volume and Issue: 13(6), P. 810 - 820

Published: April 24, 2024

Achieving high color rendering index (CRI) and luminous stability in single-structured Ce:YAG phosphor ceramics (PCs) is crucial for high-power white light-emitting diodes or laser (LEDs/LDs). However, cyan valley insufficient red component of the emission spectra significantly limit their real applications. In this work, a series Ce,Mn:Y3(Al,Sc)2Al3O12 (Ce,Mn:YSAG) PCs were fabricated by vacuum sintering, an efficient spectral regulation was realized full-color lighting. The filled blue-shifted peak Ce3+ via Sc3+ doping. orange-red around 580 nm effectively supplemented Mn2+ Particularly, CRI Ce,Mn:YSAG increased from 56.4 to 85.8 with 52% increment compared under LED excitation, operating temperature stable at about 50 ℃ long working time. Meanwhile, values 80.9 could still be obtained PC based LDs. These results indicated that excellent extremely promising convertor LEDs/LDs.

Language: Английский

Citations

10
Multi-mode optical thermometers via CaLaMgTaO6：Bi3+, Er3+ phosphors for fibre-optic temperature sensing DOI
Liangliang Hu,

Xincheng Lv,

Peng Qiao

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180377 - 180377

Published: April 1, 2025

Language: Английский

Citations

2