Orange light‐emitting Ca3Mg3(PO4)4:Sm3+ phosphors

Nair, Govind B.

doi:10.1002/bio.3194

Cited by 37 publications

(3 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The color purity values of CBPS, CBPSN, and CBPSL are 98.318954, 99.3878, and 99.4755%, respectively, which is higher than the reported data of phosphate phosphors. 29 The CBPSL phosphors have the strongest emission from 4 G 5/2 → 6 H 7/2 , means that it have the most orange-red emission. Hence, the CBPSL phosphors have the better color purity than the other samples.…”

Section: Resultsmentioning

confidence: 98%

Effect of Charge Compensation on the Photoluminescence and Thermal Stability of Trivalent Samarium-Doped Calcium Barium Phosphate Phosphors

Chiang

Fang

Chu

2017

ECS J. Solid State Sci. Technol.

View full text Add to dashboard Cite

A series of Ca6BaP4O17:Sm3+ phosphors without or with different charge compensation approaches (co-doping Li+ or Na+ ions) were synthesized by using a conventional solid-state reaction method. The crystal structure and morphologies of the phosphors were investigated by using X-ray diffraction pattern and scanning electron microscope after synthesizing the phosphor, respectively. The luminescence and spectral properties were studied by photoluminescence and diffuse reflectance spectroscopy. By introducing the charge compensator alkali metal ions A+ (A = Li and Na) into the lattice of Ca6BaP4O17:Sm3+ phosphor, its emission intensity can be enhanced. The phosphors under 405 nm excitation show characteristic emission of Sm3+ ion with the main orange–red peak centered at 602 nm. The results suggested that the Li+ ion is a good charge compensator in Ca6BaP4O17:Sm3+ phosphors due to its enhancement in luminescence and as a flux for improving the morphology of phosphors. The calculated CIE coordinates and color purity of phosphors with charge compensation of optimal Li+ ions co-doping concentration are (0.6090, 0.3892) in the orange–red region of the spectrum and ∼ 99.5% under 405 nm excitation. Besides, the thermal stability of proposed samples can be improved from 84% to 93% which is pretty high compared with published data. The mechanism is detailed in this paper.

show abstract

Section: Resultsmentioning

confidence: 98%

Effect of Charge Compensation on the Photoluminescence and Thermal Stability of Trivalent Samarium-Doped Calcium Barium Phosphate Phosphors

Chiang

Fang

Chu

2017

ECS J. Solid State Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…In order to gain insight into the color properties of the phosphors, the color purity of phosphors at different doping concentrations was calculated using the following eqn (8). 44 …”

Section: Resultsmentioning

confidence: 99%

Novel Sm³⁺-doped La₃Ga₅MO₁₄ (M = Si or Ge) phosphors for indoor illumination: effects of M cations on photoluminescence

Li,

Ding,

Tang

et al. 2024

Dalton Trans.

View full text Add to dashboard Cite

show abstract

“…Combustion has been broadly used to synthesize varied oxide materials at comparatively low temperatures. This technique could therefore be a congruent option for preparation of oxide materials such as aluminates …”

Section: Introductionmentioning

confidence: 99%

Study of luminescence properties of dysprosium‐doped CaAl₁₂O₁₉ phosphor for white light‐emitting diodes

Dev

Selot²,

Nair

et al. 2019

Luminescence

Self Cite

View full text Add to dashboard Cite

Dy 3+ -doped CaAl 12 O 19 phosphors were synthesized utilizing a combustion method.Crystal structure and morphological examinations were performed respectively using X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques to identify the phase and morphology of the synthesized samples. Fourier transform infrared spectroscopy (FTIR) estimations were carried out using the KBr method.Photoluminescence properties (excitation and emission) were recorded at room temperature. CaAl 12 O 19 :Dy 3+ phosphor showed two emission peaks respectively under a 350-nm excitation wavelength, centered at 477 nm and 573 nm. Dipole-dipole interaction via nonradiative energy shifting has been considered as the major cause of concentration quenching when Dy 3+ concentration was more than 3 mol%. The CIE chromaticity coordinates positioned at (0.3185, 0.3580) for the CaAl 12 O 19 :0.03Dy 3+ phosphor had a correlated color temperature (CCT) of 6057 K, which is situated in the cool white area. Existing results point out that the CaAl 12 O 19 :0.03Dy 3+ phosphor could be a favorable candidate for use in white light-emitting diodes (WLEDs). KEYWORDS aluminate, concentration quenching, Dy 3 + , photoluminescence, WLEDs | INTRODUCTIONAt the present time, the development of energy-saving lighting is an essential core interest for researchers. Large amounts of power can be saved by using efficient energy-saving light sources. Traditional incandescent and fluorescent lamps, with their resulting heat or gas release, have related colossal energy losses. [1] The use of energy proficient solid-state lighting appliances, for example compact fluorescent lamps (CFLs) and light-emitting diodes (LEDs), to deliver white light is an attractive alternative. Due to the above concern, the production of phosphors with excellent properties is an essential prerequisite. The efficacy of white light-emitting diodes (WLEDs) has surpassed that of incandescent lamps and fluorescent lamps. Due to their exceptional luminescence features, improved stability, energy-efficient nature, prominent luminescence efficiency, ecological amicability, and low cost, research into WLEDs has become more important. [2][3][4] WLEDs are mostly fabricated by applying three different techniques: (i) by making use of a mixture of red-green-blue (RGB) LEDs;(ii) through the utilization of ultraviolet (UV) LEDs to excite RGB phosphors; and (iii) by employing blue LEDs to pump single-phase yellow or blended green and red phosphors. [1,5] At the present time, blue emitting chips combined with yellow phosphors (YAG:Ce 3+ ) are acknowledged as existing industrial WLEDs. Nevertheless, inferable from red light effect insufficiency, low color rendering index and high correlated color temperature (CCT) are commonly experienced by phosphors in this group. High CCT and low color rendering index (CRI) are not good factors when providing domiciliary or office lighting. This hindrance can be resolved by utilizing tricolor WLEDs dependent on red, green, and blue phosphors [6][7][8] . This ...

show abstract

Orange light‐emitting Ca₃Mg₃(PO₄)₄:Sm³⁺ phosphors

Cited by 37 publications

References 17 publications

Effect of Charge Compensation on the Photoluminescence and Thermal Stability of Trivalent Samarium-Doped Calcium Barium Phosphate Phosphors

Effect of Charge Compensation on the Photoluminescence and Thermal Stability of Trivalent Samarium-Doped Calcium Barium Phosphate Phosphors

Novel Sm³⁺-doped La₃Ga₅MO₁₄ (M = Si or Ge) phosphors for indoor illumination: effects of M cations on photoluminescence

Study of luminescence properties of dysprosium‐doped CaAl₁₂O₁₉ phosphor for white light‐emitting diodes

Contact Info

Product

Resources

About

Orange light‐emitting Ca3Mg3(PO4)4:Sm3+ phosphors

Cited by 37 publications

References 17 publications

Effect of Charge Compensation on the Photoluminescence and Thermal Stability of Trivalent Samarium-Doped Calcium Barium Phosphate Phosphors

Effect of Charge Compensation on the Photoluminescence and Thermal Stability of Trivalent Samarium-Doped Calcium Barium Phosphate Phosphors

Novel Sm3+-doped La3Ga5MO14 (M = Si or Ge) phosphors for indoor illumination: effects of M cations on photoluminescence

Study of luminescence properties of dysprosium‐doped CaAl12O19 phosphor for white light‐emitting diodes

Contact Info

Product

Resources

About

Orange light‐emitting Ca₃Mg₃(PO₄)₄:Sm³⁺ phosphors

Novel Sm³⁺-doped La₃Ga₅MO₁₄ (M = Si or Ge) phosphors for indoor illumination: effects of M cations on photoluminescence

Study of luminescence properties of dysprosium‐doped CaAl₁₂O₁₉ phosphor for white light‐emitting diodes