Blue-light emission from GaN∕Al0.5Ga0.5N quantum dots

2008 ◽  
Vol 92 (5) ◽  
pp. 051911 ◽  
Author(s):  
T. Huault ◽  
J. Brault ◽  
F. Natali ◽  
B. Damilano ◽  
D. Lefebvre ◽  
...  
2019 ◽  
Vol 45 (3) ◽  
pp. 3833-3838 ◽  
Author(s):  
I. Devadoss ◽  
P. Sakthivel ◽  
S. Muthukumaran ◽  
N. Sudhakar

2020 ◽  
Vol 8 (47) ◽  
pp. 10837-10844
Author(s):  
Xin Wang ◽  
Xiaodan Zhang ◽  
Haiyan Cao ◽  
Yuming Huang

The UA@Ti3C2 QDs with blue light emission were synthesized by a simple and green microwave-assisted method, and used as a sensitive and selective probe for the detection of TNP both on surfaces and in solution.


2020 ◽  
Vol 15 (11) ◽  
pp. 1364-1373
Author(s):  
Iman E. Shaaban ◽  
Ahmed S. Samra ◽  
Bedir Yousif ◽  
N. A. Alghamdi ◽  
Shamia El-Sherbiny ◽  
...  

The present search handles the blue light emission investigation of hybrid quantum dots organic light-emitting devices. The emissions at 445 nm and 460 nm have been examined for microcavity hybrid quantum dot organic light-emitting devices (QD-OLED) upon quantum dots of CdS and CdSe. External light emissions have been evaluated through a numerical model based on the transfer matrix for electromagnetic plane waves. The devices' optical properties are investigated based on internal reflectance and cavity length by considering the architecture consisting of multilayers thin-film structures. The overall performance of the light-emitting devices with emission at 445 nm showed an improvement of the enhancement factor and narrowing outcoupling emission relative to the devices with emission at 460 nm. Besides, the light-emitting devices based on CdS QDs revealed better performance relative to the devices based on CdSe QDs.


Nanomaterials ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 770 ◽  
Author(s):  
Kai Gu ◽  
Hongshang Peng ◽  
Siwei Hua ◽  
Yusong Qu ◽  
Di Yang

A series of stable and color-tunable MAPbBr3−xClx quantum dot membranes were fabricated via a cost-efficient high-throughput technology. MAPbBr3−xClx quantum dots grown in-situ in polyvinylidene fluoride electrospun nanofibers exhibit extraordinary stability. As polyvinylidene fluoride can prevent the molecular group MA+ from aggregating, MAPbBr3−xClx quantum dots are several nanometers and monodisperse in polyvinylidene fluoride fiber. As-prepared MAPbBr3−xClx quantum dot membranes exhibit the variable luminous color by controlling the Cl− content of MAPbBr3−xClx quantum dots. To improve blue-light emission efficiency, we successfully introduced Ag nanoparticle nanofibers into MAPbBr1.2Cl1.8 quantum dot membranes via layer-by-layer electrospinning and obtained ~4.8 folds fluorescence enhancement for one unit. Furthermore, the originality explanation for the fluorescence enhancement of MAPbBr3−xClx quantum dots is proposed based on simulating optical field distribution of the research system.


2018 ◽  
Vol 42 (6) ◽  
pp. 3999-4007 ◽  
Author(s):  
Chechia Hu ◽  
Tzer-Rurng Su ◽  
Tzu-Jen Lin ◽  
Chien-Wei Chang ◽  
Kuo-Lun Tung

Microwave-assisted hydrothermal synthesized GOQDs exhibit yellowish-green and blue light emission with quantum yields of 15.1% and 8.4%, respectively.


1998 ◽  
Vol 58 (24) ◽  
pp. R15989-R15992 ◽  
Author(s):  
F. Widmann ◽  
J. Simon ◽  
B. Daudin ◽  
G. Feuillet ◽  
J. L. Rouvière ◽  
...  

2021 ◽  
Vol 186 ◽  
pp. 109025
Author(s):  
João Humberto Dias Campos ◽  
Meiry Edivirges Alvarenga ◽  
Maykon Alves Lemes ◽  
José Antônio do Nascimento Neto ◽  
Freddy Fernandes Guimarães ◽  
...  

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