A high quality liquid-type quantum dot white light-emitting diode

Nanoscale ◽  
2016 ◽  
Vol 8 (2) ◽  
pp. 1117-1122 ◽  
Author(s):  
Chin-Wei Sher ◽  
Chin-Hao Lin ◽  
Huang-Yu Lin ◽  
Chien-Chung Lin ◽  
Che-Hsuan Huang ◽  
...  

In this study, a liquid-type QD white LED is demonstrated as an efficient color-conversion layer in UV LED packages.

Nanoscale ◽  
2018 ◽  
Vol 10 (13) ◽  
pp. 6214-6214 ◽  
Author(s):  
Chin-Wei Sher ◽  
Chih-Hao Lin ◽  
Huang-Yu Lin ◽  
Chien-Chung Lin ◽  
Che-Hsuan Huang ◽  
...  

Correction for ‘A high quality liquid-type quantum dot white light-emitting diode’ by Chin-Wei Sher et al., Nanoscale, 2016, 8, 1117–1122.


2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Lung-Chien Chen ◽  
Yi-Tsung Chang ◽  
Ching-Ho Tien ◽  
Yu-Chun Yeh ◽  
Zong-Liang Tseng ◽  
...  

AbstractThis work presents a method for obtaining a color-converted red light source through a combination of a blue GaN light-emitting diode and a red fluorescent color conversion film of a perovskite CsPbI3/TOPO composite. High-quality CsPbI3 quantum dots (QDs) were prepared using the hot-injection method. The colloidal QD solutions were mixed with different ratios of trioctylphosphine oxide (TOPO) to form nanowires. The color conversion films prepared by the mixed ultraviolet resin and colloidal solutions were coated on blue LEDs. The optical and electrical properties of the devices were measured and analyzed at an injection current of 50 mA; it was observed that the strongest red light intensity was 93.1 cd/m2 and the external quantum efficiency was 5.7% at a wavelength of approximately 708 nm when CsPbI3/TOPO was 1:0.35.


2018 ◽  
Vol 32 (27) ◽  
pp. 1850299
Author(s):  
Pei Wang ◽  
Zhen Wang ◽  
Ai Chen ◽  
Jia-Feng Xie ◽  
Xin Zheng

In this paper, combining phosphorescence and fluorescence to form white light was realized based on DCJTB:PMMA/ITO/NPB/TCTA/FIrpic:TCTA/TPBi/Ir(ppy)3:TPBi/TPBi/Cs2CO3/Al. The effects of red fluorescence on this white light device was studied by adjusting the concentration of DCJTB. The study shows that the device with a DCJTB concentration of 0.7% in the color conversion layer (CCL) generates a peak current efficiency and power efficiency of 23.4 cd ⋅ A[Formula: see text] and 7.5 lm ⋅ W[Formula: see text], respectively. And it is closest to the equal-energy white point of (0.33, 0.33) which shows a CIE (Commission Internationale de L’Eclairage) coordinate of (0.35, 0.43) and a color rendering index (CRI) of 70 at current density of 10 mA ⋅ cm[Formula: see text]. In order to improve the efficiency, we design and fabricate both high efficient and pure white organic light-emitting diode (WOLED) by replacing the single blue emission layer (EML) with double EMLs of FIrpic:TCTA and FIrpic:TPBi. The further study shows that, when the layers of EML is three and the concentration of DCJTB at 0.7%, the device exhibits good performance specifically, at current density of 10 mA ⋅ cm[Formula: see text], the current efficiency of 28.2 cd ⋅ A[Formula: see text] (power efficiency of 10.3 lm ⋅ W[Formula: see text]), and the CIE coordinate of (0.33, 0.31) (CRI of 80.38).


2016 ◽  
Vol 661 ◽  
pp. 228-233 ◽  
Author(s):  
Min Lu ◽  
Xue Bai ◽  
Yijun Lin ◽  
Changyin Ji ◽  
Hua Wu ◽  
...  

2013 ◽  
Vol 92 ◽  
pp. 325-329 ◽  
Author(s):  
Woo-Seuk Song ◽  
Jong-Hoon Kim ◽  
Jeong-Hoon Lee ◽  
Hye-Seung Lee ◽  
Ho Seong Jang ◽  
...  

2016 ◽  
Vol 52 (17) ◽  
pp. 3564-3567 ◽  
Author(s):  
Karam Han ◽  
Won Bin Im ◽  
Jong Heo ◽  
Woon Jin Chung

A complete inorganic quantum dot color converter for a white LED is achieved using silicate-based quantum-dot-embedded glasses (QDEGs).


2014 ◽  
Vol 4 (7) ◽  
pp. 1297 ◽  
Author(s):  
Sun-Hyoung Lee ◽  
Ki-Heon Lee ◽  
Jung-Ho Jo ◽  
Byoungnam Park ◽  
Yongwoo Kwon ◽  
...  

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