Luminescence properties and energy transfer behavior of single-component NaY(WO4)2:Tm3+/Dy3+/Eu3+ phosphors for ultraviolet-excited white light-emitting diodes

2016 ◽  
Vol 673 ◽  
pp. 426-432 ◽  
Author(s):  
Peng Du ◽  
Lili Wang ◽  
Jae Su Yu
Keyword(s):  
Energy Transfer ◽  
White Light ◽  
Light Emitting Diodes ◽  
Single Component ◽  
Luminescence Properties ◽  
Light Emitting ◽  
Transfer Behavior ◽  
White Light Emitting Diodes

Efficient green phosphor realized by Ce3+→Tb3+ energy transfer in Li3Sc2(PO4)3 for ultraviolet white light-emitting diodes

2018 ◽  
Vol 20 (42) ◽  
pp. 26995-27002 ◽  
Author(s):  
Mengmeng Jiao ◽  
Qinfeng Xu ◽  
Mingliang Liu ◽  
Chuanlu Yang ◽  
Yongjiang Yu
Keyword(s):  
Energy Transfer ◽  
White Light ◽  
Electronic Structures ◽  
Light Emitting Diodes ◽  
Luminescence Properties ◽  
Green Phosphor ◽  
Light Emitting ◽  
White Light Emitting Diodes

UV excited green-emitting Li3Sc2(PO4)3:Ce3+,Tb3+ phosphors have been obtained, and their electronic structures and luminescence properties have been investigated in detail.

scholarly journals Solvent regulation synthesis of single-component white emission carbon quantum dots for white light-emitting diodes

2021 ◽  
Vol 10 (1) ◽  
pp. 465-477
Author(s):  
Longshi Rao ◽  
Qing Zhang ◽  
Mingfu Wen ◽  
Zhongfa Mao ◽  
Huaxian Wei ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
Light Emitting Diodes ◽  
Carbon Quantum Dots ◽  
Single Component ◽  
Great Promise ◽  
Solvent Engineering ◽  
Light Emitting ◽  
White Emission ◽  
White Light Emitting Diodes

Abstract White light-emitting diodes (WLEDs) hold great promise in lighting, display, and visible light communication devices, and single-component white emission carbon quantum dots (SCWE-CQDs) as the key component of WLEDs have many outstanding advantages. However, rapid and efficient synthesis of SCWE-CQDs with high photoluminescence quantum yield (PLQY) and stability remains challenging. Here, we report a novel solvent engineering strategy to obtain highly photoluminescent SCWE-CQDs by controlling the dilution ratios between N,N-dimethylformamide (DMF) and pristine red carbon quantum dots (RCQDs) solution. By optimizing synthesis conditions, the relative PLQY of the SCWE-CQDs solution reached 53%. Morphological, structural, and optical property characterizations indicate that the combined action of the hydrogen bond (HB) effect and the size effect leads to the blue shift of RCQDs, but the HB effect is more dominant than the particle size in causing large spectral shifts. In addition, the WLEDs with high color rendering index of 89 and remarkable reliability were obtained based on the highly photoluminescent SCWE-CQDs. This facile solvent engineering approach for synthesizing tunable emission CQDs will promote the progress of carbon-based luminescent materials for applications in optoelectronic devices.

Novel ultrabright luminescent copper nanoclusters and application in light-emitting devices

2021 ◽  
Vol 57 (77) ◽  
pp. 9890-9893
Author(s):  
Qiu-Qin Huang ◽  
Mei-Yue Hu ◽  
Yan-Li Li ◽  
Nan-Nan Chen ◽  
Yi Li ◽  
...  
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Single Component ◽  
Copper Nanoclusters ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Phosphorescence Emission ◽  
White Light Emitting Diodes

Ultra-small tri/tetra-nuclear copper nanoclusters (Cu3/Cu4) exhibit ultrabright phosphorescence emission (Фem = 71.8 and 63.5%). Cu3 is firstly applied as a single component phosphor for white light-emitting diodes with favourable characteristics.

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