Energy transfer mechanism and luminescence properties of color tunable LaPO4:Tm,Eu phosphor

Yang, Su–Hua; Yen, Chia-Hung; Lin, Chun-Yeon; Chiang, Po-Jui

doi:10.1016/j.ceramint.2015.02.042

Cited by 25 publications

(4 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since an energy gap between Tm 3+ : 1 D 2 and 3 F 4 levels matches well with the gap between the Dy 3+ : 6 H 15/2 and 4 I 15/2 states, the population of Dy 3+ : 4 I 15/2 levels increases because of the CR processes between Tm 3+ and Dy 3+ and such CR is possible due to Tm 3+ : 1 D 2 → 3 F 4 emission and Dy 3+ : 6 H 15/2 → 4 I 15/2 excitation band overlap, as shown in Figure C for PBSK‐1 and PBSK‐2 glasses. This CR process can be described as 1 D 2 (Tm 3+ ) + 6 H 15/2 (Dy 3+ ) → 3 F 4 (Tm 3+ ) + 4 I 15/2 (Dy 3+ ).…”

Section: Resultsmentioning

confidence: 99%

Fabrication, tunable fluorescence emission and energy transfer of Tm³⁺‐Dy³⁺ co‐activated P₂O₅–B₂O₃–SrO–K₂O glasses

Cui

Chen

et al. 2019

J Am Ceram Soc

View full text Add to dashboard Cite

A growing demand for white light‐emitting diodes (W‐LEDs) gives rise to continuous exploration of functional fluorescence glasses. In this paper, Tm3+/Dy3+ single‐ and co‐doped glasses with composition (in mol%) of 30P2O5–10B2O3–23SrO–37K2O were synthesized using the melt‐quenching method in air. The physical properties, glass structure, luminescence characteristics and energy transfer mechanism of the glasses were systematically studied. As glass network modifiers, Tm3+ and Dy3+ ions can densify the glass structure. Excitation wavelength and doping concentration of Tm3+/Dy3+ ions have a direct impact on the emission intensities of blue and orange light as well as the color coordinate of the as‐prepared glasses. A white light very close to standard white light can be obtained under 354 nm excitation when the content of Tm3+ and Dy3+ is 0.2 mol% and 1.0 mol%, respectively. The results of the emission spectra and decay curves reveal the existence of energy transfer from Tm3+ to Dy3+. The analytic results based on the Inokuti‐Hirayama model indicate that the electrical dipole‐dipole interaction may be the main mechanism of energy transfer. Moreover, Tm3+/Dy3+ co‐activated glass phosphor has good thermal stability and chrominance stability and it is a promising candidate for white LEDs and display device.

show abstract

Section: Resultsmentioning

confidence: 99%

Fabrication, tunable fluorescence emission and energy transfer of Tm³⁺‐Dy³⁺ co‐activated P₂O₅–B₂O₃–SrO–K₂O glasses

Cui

Chen

et al. 2019

J Am Ceram Soc

View full text Add to dashboard Cite

show abstract

“…The excited Eu 3+ ions relax non-radioactively to 5 D 1 and then to the metastable 5 D 0 state. Therefore, these ions finally decay in a radioactive pathway from the metastable state to 7 F J (J = 1, 2, 3 and 4) ground state by emitting photons in their respective regions [59]. (iii) ET3 refers to Tb 3+ ( 5 D 3 ) → Eu 3+ ( 5 D 1 ).…”

Section: Uv-visible Spectroscopymentioning

confidence: 99%

Fast and simultaneous doping of Sr0.9−−−Ca0.1In2O4:(xEu3+, yTm3+, zTb3+) superstructure by ultrasonic spray pyrolysis

Santiago

Lovisa

Medeiros

et al. 2019

Ultrasonics Sonochemistry

View full text Add to dashboard Cite

“…Tm 3+ is widely used as the activator of blue emission. Previous investigations of Tm 3+ -doped materials mainly focused on the host matrixes, such as sulfides [10], aluminates [11], phosphates [12], and borate [13].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Investigation of Tm3+- Doped Li3Gd3Te2O12 Blue-Emitting Phosphor

Deng

Zhou

Liu

et al. 2018

MSF

View full text Add to dashboard Cite

A novel blue-emitting phosphor, Li3Gd3Te2O12:Tm3+ for white light-emitting diodes (W-LEDs) was prepared by solid-state synthesis and its structure and luminescence properties were investigated. This phosphor shows a satisfactory blue performance (peak at 458 nm) due to the 1D2 → 3F4 transition of Tm3+ excited by 361 nm light. Investigation of Tm3+ content dependent emission spectra indicates that x = 0.03 is the optimum doping content of Tm3+ ions in the Li3Gd3Te2O12 host. The critical distance and the concentration quenching mechanism were also investigated. In particular, the color purity of as-prepared sample is close to that of the commercial blue phosphor BaMgAl10O17:Eu2+ (BAM:Eu2+). The present work suggests that the Li3Gd3Te2O12:Tm3+ phosphor is a potential blue-emitting candidate for the application in the near-UV WLEDs.

show abstract

Energy transfer mechanism and luminescence properties of color tunable LaPO4:Tm,Eu phosphor

Cited by 25 publications

References 33 publications

Fabrication, tunable fluorescence emission and energy transfer of Tm³⁺‐Dy³⁺ co‐activated P₂O₅–B₂O₃–SrO–K₂O glasses

Fabrication, tunable fluorescence emission and energy transfer of Tm³⁺‐Dy³⁺ co‐activated P₂O₅–B₂O₃–SrO–K₂O glasses

Fast and simultaneous doping of Sr0.9−−−Ca0.1In2O4:(xEu3+, yTm3+, zTb3+) superstructure by ultrasonic spray pyrolysis

Preparation and Investigation of Tm<sup>3+</sup>- Doped Li<sub>3</sub>Gd<sub>3</sub>Te<sub>2</sub>O<sub>12</sub> Blue-Emitting Phosphor

Contact Info

Product

Resources

About

Energy transfer mechanism and luminescence properties of color tunable LaPO4:Tm,Eu phosphor

Cited by 25 publications

References 33 publications

Fabrication, tunable fluorescence emission and energy transfer of Tm3+‐Dy3+ co‐activated P2O5–B2O3–SrO–K2O glasses

Fabrication, tunable fluorescence emission and energy transfer of Tm3+‐Dy3+ co‐activated P2O5–B2O3–SrO–K2O glasses

Fast and simultaneous doping of Sr0.9−−−Ca0.1In2O4:(xEu3+, yTm3+, zTb3+) superstructure by ultrasonic spray pyrolysis

Preparation and Investigation of Tm<sup>3+</sup>- Doped Li<sub>3</sub>Gd<sub>3</sub>Te<sub>2</sub>O<sub>12</sub> Blue-Emitting Phosphor

Contact Info

Product

Resources

About

Fabrication, tunable fluorescence emission and energy transfer of Tm³⁺‐Dy³⁺ co‐activated P₂O₅–B₂O₃–SrO–K₂O glasses

Fabrication, tunable fluorescence emission and energy transfer of Tm³⁺‐Dy³⁺ co‐activated P₂O₅–B₂O₃–SrO–K₂O glasses