Flexible quantum dot–PVA composites for white LEDs

2015 ◽  
Vol 3 (2) ◽  
pp. 257-264 ◽  
Author(s):  
Arzu Cosgun ◽  
Renli Fu ◽  
Weina Jiang ◽  
Jianhai Li ◽  
Jizhong Song ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Blue Light ◽  
Light Emitting Diode ◽  
Low Cost ◽  
Red Emission ◽  
Light Emitting ◽  
White Leds

Integration of blue light-emitting diode (LED) chips with yellow phosphors has been the most practical way to achieve white lighting, but finding a low-cost alternative for Y3Al5O12:Ce3+ (YAG:Ce) phosphors, which are expensive and lack red emission, is still a great challenge.

scholarly journals A STUDY OF RED-EMITTING PHOSPHOR OF K2SiF6:Mn4+ FOR WARM WHITE LEDs

2018 ◽  
Vol 56 (1A) ◽  
pp. 183 ◽  
Author(s):  
Nguyen Le Anh
Keyword(s):  
Energy Transfer ◽  
Narrow Band ◽  
Light Emitting Diode ◽  
Forbidden States ◽  
Red Emission ◽  
Light Emitting ◽  
White Leds ◽  
Band Emission ◽  
Red Emitting Phosphor

This study focuses on the fabrication of red-emitting phosphor based on K2SiF6: Mn4+ phosphor. Characteristic emissive peaks in the red region of the Mn4+ ions involve the energy transfer from spin-forbidden states of 2Eg → 4A2, showing narrow band emission peaks at 609, 614, 631, 635 and 647 nm. Meanwhile, their absorptive peaks involve the energy transfer from spin-allowed states of 4A2 → 4Tg; the excited wavelength of the Mn4+ is in the range 360 - 460 nm. Thus, the K2SiF6: Mn4+ phosphor is particularly suitable for redundancy of 460 nm - Light Emitting Diode (LED); it complements the red emission of the commercial White LEDs.

Synchronization of Chaotic Quantum Dot Light Emitting Diodes under Optical Feedback Effect

2020 ◽  
pp. 144-148
Keyword(s):  
Quantum Dot ◽  
Delay Time ◽  
Chaos Synchronization ◽  
Optical Feedback ◽  
Light Emitting Diode ◽  
Feedback Effect ◽  
Complete Synchronization ◽  
Light Emitting ◽  
Coupling Methods ◽  
Coupling Parameters

Chaos synchronization of delayed quantum dot light emitting diode has been studied theortetically which are coupled via the unidirectional and bidirectional. at synchronization of chaotic, The dynamics is identical with delayed optical feedback for those coupling methods. Depending on the coupling parameters and delay time the system exhibits complete synchronization, . Under proper conditions, the receiver quantum dot light emitting diode can be satisfactorily synchronized with the transmitter quantum dot light emitting diode due to the optical feedback effect.

InP-Based Quantum Dot Light-Emitting Diode with a Blended Emissive Layer

2021 ◽  
pp. 1577-1585
Author(s):  
Moon Gyu Han ◽  
Yeonkyung Lee ◽  
Ha-il Kwon ◽  
Heejae Lee ◽  
Taehyung Kim ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Emissive Layer
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