scholarly journals Mn2+ activated Ca-α-SiAlON – Broadband deep-red luminescence and sensitization by Eu2+, Yb2+ and Ce3+

2021 ◽  
Author(s):  
Atul D Sontakke ◽  
Arnoldus J van Bunningen ◽  
Sadakazu Wakui ◽  
Andries Meijerink
Keyword(s):  
White Light ◽  
Covalent Character ◽  
Widespread Implementation ◽  
Emission Color ◽  
Red Luminescence

The covalent character of (oxy)nitrides has enabled tuning of emission color for new Eu2+- and Ce3+-doped phosphors and widespread implementation in white light LEDs. Mn2+-doped (oxy)nitrides form a relatively unexplored...

scholarly journals Emission color tuning and white-light generation based on photochromic control of energy transfer reactions in polymer micelles

2016 ◽  
Vol 7 (9) ◽  
pp. 5867-5871 ◽  
Author(s):  
Magnus Bälter ◽  
Shiming Li ◽  
Masakazu Morimoto ◽  
Sicheng Tang ◽  
Jordi Hernando ◽  
...  
Keyword(s):  
Energy Transfer ◽  
White Light ◽  
Transfer Reactions ◽  
Polymer Micelles ◽  
Color Tuning ◽  
Emission Color ◽  
White Light Generation ◽  
Light Generation

An all-photonic FRET-based system with emission color reversibly changed from blue,viawhite, to yellow is devised.

Thickness dependent emission color of organic white light-emitting devices

2003 ◽  
Vol 137 (1-3) ◽  
pp. 1101-1102 ◽  
Author(s):  
Jing Feng ◽  
Yu Liu ◽  
Feng Li ◽  
Yue Wang ◽  
Shiyong Liu
Keyword(s):  
White Light ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Emission Color

Dopant and excitation wavelength dependent color tunability in Dy3+:YVO4 and Dy3+/Eu3+:YVO4 microparticles towards white light emission

2016 ◽  
Vol 45 (41) ◽  
pp. 16231-16239 ◽  
Author(s):  
Anna M. Kaczmarek ◽  
Dorine Ndagsi ◽  
Rik Van Deun
Keyword(s):  
White Light ◽  
Light Emission ◽  
White Light Emission ◽  
Excitation Wavelength ◽  
Emission Color ◽  
Color Tunability

The emission color of Dy:YVO4 and Dy,Eu:YVO4 microstructures could be tuned towards white light and white light with a yellow undertone through varying the Ln3+ doping percentages as well as the excitation wavelengths.

Synthesis and Research of rare earth-doped color tunable Sr3Gd(PO4)3 phosphors

2019 ◽  
Vol 33 (18) ◽  
pp. 1950201
Author(s):  
Boxin Liang ◽  
Shuangping Yi ◽  
Gengqiao Hu ◽  
Zhixiong Fang ◽  
Zhengfa Hu
Keyword(s):  
Rare Earth ◽  
White Light ◽  
Dipole Interaction ◽  
Critical Distance ◽  
Solid State Method ◽  
Excitation Peak ◽  
Good Thermal Stability ◽  
Emission Color ◽  
Color Tunable ◽  
Rare Earth Doped

Rare earth-doped Sr3Gd(PO4)3 and emission color tunable phosphors Ce[Formula: see text]/Sm[Formula: see text] co-doped Sr3Gd(PO4)3 have been synthesized by a traditional solid-state method. These phosphors were characterized by X-ray diffraction (XRD), FE-SEM, diffuse reflectance spectra (DRS), photoluminescence spectra and lifetime measurements. The quenching concentration of Ce[Formula: see text] ions in Sr3Gd(PO4)3 was about 9 mol.%. An effective energy transfer (ET) from Ce[Formula: see text] ions to Sm[Formula: see text] ions in Sr3Gd(PO4)3 was speculated by the overlapped spectrum for the emission peak of Ce[Formula: see text] and the excitation peak of Sm[Formula: see text] ions. It is demonstrated that the ET mechanism is resonant through the dipole–dipole interaction and the critical distance between Ce[Formula: see text] and Sm[Formula: see text] in Sr3Gd(PO[Formula: see text] is calculated to 15.22 Å. Moreover, Sr3Gd[Formula: see text](PO4)3:0.09Ce[Formula: see text], xSm[Formula: see text] can be adjusted systematically by generating blue light to white light in the CIE diagram which coincide with the ET process of Ce[Formula: see text] ions to Sm[Formula: see text] ions. The Sr3Gd[Formula: see text](PO4)3:0.09Ce[Formula: see text], 0.01Sm[Formula: see text] phosphor also perform at a good thermal stability. All of these experimental results in this work can be served as a potential multicolor tunable phosphor for ultraviolet pumped white light appliance.

scholarly journals Vibrationally induced color shift tuning of photoluminescence in Ce3+-doped garnet phosphors

2019 ◽  
Vol 7 (41) ◽  
pp. 12926-12934 ◽  
Author(s):  
Yuan-Chih Lin ◽  
Paul Erhart ◽  
Maths Karlsson
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Emission Color ◽  
Color Shift ◽  
White Light Emitting Diodes ◽  
Critical Challenge

A critical challenge in the field of phosphor converted white light emitting diodes (pc-WLEDs) pertains to understanding and controlling the variation of emission color with device temperature.

scholarly journals Emission color variation of (Ba,Sr)_3BP_3O_12:Eu^2+ phosphors for white light LEDs

2010 ◽  
Vol 18 (3) ◽  
pp. 1888 ◽  
Author(s):  
Te-Wen Kuo ◽  
Wei-Ren Liu ◽  
Teng-Ming Chen
Keyword(s):  
White Light ◽  
Color Variation ◽  
Emission Color

Mechanically induced single-molecule white-light emission of excited-state intramolecular proton transfer (ESIPT) materials

2021 ◽  
Author(s):  
Quan Huang ◽  
Qiang Guo ◽  
Jingbo Lan ◽  
Rongchuan Su ◽  
You Ran ◽  
...  
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Single Molecule ◽  
White Light ◽  
Light Emission ◽  
Intramolecular Proton Transfer ◽  
White Light Emission ◽  
Mechanical Grinding ◽  
Emission Color ◽  
Color Switching

Disclosed herein is the first example of a mechanically induced single-molecule white-light emission of ESIPT materials. Mechanical grinding transforms intermolecular packing motifs, enabling emission color switching from yellowish green to white.

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