A direct warm-white-light CaLa2(MoO4)4: Tb3+, Sm3+ phosphor with tunable color tone via energy transfer for white LEDs

RSC Advances ◽  
2015 ◽  
Vol 5 (95) ◽  
pp. 77866-77872 ◽  
Author(s):  
Wei Xie ◽  
Guixia Liu ◽  
Xiangting Dong ◽  
Jinxian Wang ◽  
Wensheng Yu
Keyword(s):  
Energy Transfer ◽  
Ultraviolet Radiation ◽  
White Light ◽  
Solvothermal Method ◽  
Color Tone ◽  
White Leds ◽  
Warm White Light ◽  
Co Doped

Tb3+ and Sm3+ co-doped CaLa2(MoO4)4 phosphors were prepared by a solvothermal method. Under different ultraviolet radiation, warm-white-light emissions are realized, and the phosphors could be favorable candidates for white LEDs.

Realization of warm white light and energy transfer studies of Dy3+/Eu3+ co-doped Li2O-PbO-Al2O3-B2O3 glasses for lighting applications

2020 ◽  
Vol 222 ◽  
pp. 117166 ◽  
Author(s):  
Nisha Deopa ◽  
Mukesh K. Sahu ◽  
P.R. Rani ◽  
R. Punia ◽  
A.S. Rao
Keyword(s):  
Energy Transfer ◽  
White Light ◽  
Warm White Light ◽  
Co Doped

Color-tunable Al6Si2O13:Eu2+,Mn2+ phosphor with high color rendering index based on energy transfer for warm white LEDs

2018 ◽  
Vol 42 (18) ◽  
pp. 15207-15214 ◽  
Author(s):  
Bo Yan ◽  
Gui-Gen Wang ◽  
Long-Fei Liu ◽  
Xin-Zhong Wang ◽  
You-Xiao Chen ◽  
...  
Keyword(s):  
Energy Transfer ◽  
White Light ◽  
White Led ◽  
Light Emitting ◽  
White Leds ◽  
Warm White Light ◽  
Color Tunable ◽  
Color Rendering Index ◽  
Color Rendering

A type of warm-white-light-emitting Al6Si2O13:Eu2+,Mn2+ phosphor with high color rendering index was synthesized for UV-excited white LED.

A novel single-phase warm white emission phosphor Sr3YAl2O7.5:Bi3+,Eu3+ with energy transfer for UV white LEDs

RSC Advances ◽  
2016 ◽  
Vol 6 (48) ◽  
pp. 42618-42626 ◽  
Author(s):  
Yichao Wang ◽  
Jianyan Ding ◽  
Yanyan Li ◽  
Linfen Yang ◽  
Xin Ding ◽  
...  
Keyword(s):  
Energy Transfer ◽  
White Light ◽  
Single Phase ◽  
Light Emitting ◽  
White Leds ◽  
White Emission ◽  
Warm White Light ◽  
Color Tunable

A series of color-tunable warm white-light emitting phosphors Sr3YAl2O7.5:xBi3+, yEu3+.

scholarly journals The synthesis of green fluorescent carbon dots for warm white LEDs

RSC Advances ◽  
2018 ◽  
Vol 8 (35) ◽  
pp. 19585-19595 ◽  
Author(s):  
Qin Du ◽  
Jingxia Zheng ◽  
Junli Wang ◽  
Yongzhen Yang ◽  
Xuguang Liu
Keyword(s):  
White Light ◽  
Carbon Dots ◽  
Solvothermal Method ◽  
Light Emitting ◽  
White Leds ◽  
Light Emitting Devices ◽  
Warm White Light ◽  
Green Fluorescent ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Green emissive carbon dots synthesized by solvothermal method is used for warm white light-emitting devices.

scholarly journals Luminescence and energy transfer of warm white-emitting phosphor Mg2Y2Al2Si2O12:Dy3+,Eu3+ for white LEDs

RSC Advances ◽  
2021 ◽  
Vol 11 (52) ◽  
pp. 32707-32716
Author(s):  
Zizhong Zhu ◽  
Chunjing Tao ◽  
Zhijun Wang ◽  
Zhiping Yang ◽  
Panlai Li
Keyword(s):  
Energy Transfer ◽  
White Light ◽  
Color Temperature ◽  
White Leds ◽  
Warm White Light ◽  
Chromaticity Coordinates ◽  
Cie Chromaticity

MYAS:xDy3+,yEu3+ can produce warm white light with CIE chromaticity coordinates of (0.4071, 0.3944) and relative color temperature of 3500 K.

scholarly journals Warm-white luminescence of Dy3+ and Sm3+ co-doped NaSrPO4 phosphors through energy transfer between Dy3+ and Sm3+ ions

2021 ◽  
Author(s):  
Wen Yan ◽  
Junhan Li ◽  
Wentao Zhang ◽  
Xi Gao ◽  
Peicong Zhang
Keyword(s):  
Energy Transfer ◽  
White Light ◽  
Sol Gel ◽  
Synthesis Temperature ◽  
Dipole Transition ◽  
Efficient Energy Transfer ◽  
Light Emitting ◽  
Co Doping ◽  
Warm White Light ◽  
Co Doped

Abstract Series of white-light-emitting NaSrPO4:Dy3+ phosphors were synthesized via a sol-gel method. Small amounts of Sm3+ ions were co-doped into the phosphors to enhance their luminescence. The effects of Dy3+/Sm3+ co-doping concentrations and synthesis temperature on the phosphors’ structures and luminescence properties were investigated. The results of X-ray diffraction confirmed that the characteristic diffraction peaks of the phosphors were in accord with those of the standard NaSrPO4 structure. Energy dispersive spectroscopy indicated that the NaSrPO4:Dy3+ samples were prepared with stoichiometric ratios of elements. Under ultraviolet light excitation of 348 nm, the NaSrPO4:Dy3+ phosphors emitted a white light which was composed of two emission peaks at 484 nm (blue) and 577 nm (yellow) corresponding to the magnetic dipole transition 4F9/2 → 6H15/2 and electronic dipole transition 4F9/2 → 6H13/2 of Dy3+ ions, respectively. Based on Sm3+ co-doping, a characteristic red emission at 602 nm arose and a warm-white light containing a lower CCT value was obtained. Besides, the luminescence lifetime of Dy3+ decreased while that of Sm3+ increased as dosages of Sm3+ were added, indicating efficient energy transfer from Dy3+ to Sm3+ happened. Therefore, NaSrPO4:Dy3+, Sm3+ phosphors are promising candidates for application in warm-white light-emitting diodes.

Doping Eu3+/Sm3+ into CaWO4:Tm3+, Dy3+ phosphors and their luminescence properties, tunable color and energy transfer

RSC Advances ◽  
2016 ◽  
Vol 6 (31) ◽  
pp. 26239-26246 ◽  
Author(s):  
Wei Xie ◽  
Guixia Liu ◽  
Xiangting Dong ◽  
Jinxian Wang ◽  
Wensheng Yu
Keyword(s):  
Energy Transfer ◽  
Hydrothermal Method ◽  
White Light ◽  
Luminescence Properties ◽  
Warm White Light ◽  
Co Doped

Eu3+ and Sm3+ co-doped CaWO4:Tm3+, Dy3+ phosphors were prepared by a hydrothermal method. Under different UV radiations, the tunable color and warm-white-light emissions are realized.

Tunable White-Light Emission of Co2+ and Mn2+ Co-Doped ZnS Nanoparticles by Energy Transfer between Dopant Ions

2020 ◽  
Vol 124 (6) ◽  
pp. 3857-3866 ◽  
Author(s):  
G. Saavedra-Rodriguez ◽  
U. Pal ◽  
R. Sánchez-Zeferino ◽  
M. E. Álvarez-Ramos
Keyword(s):  
Energy Transfer ◽  
White Light ◽  
Light Emission ◽  
White Light Emission ◽  
Zns Nanoparticles ◽  
Co Doped
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