Full‐visible spectrum emitting Zn–In–S:Cu/ZnS nanocrystals based on varying Cu concentrations and its application in white LEDs

2018 ◽  
Vol 101 (12) ◽  
pp. 5586-5595
Author(s):  
Mengmeng Cao ◽  
Caiyan Yu ◽  
Jinfeng Xia ◽  
Danyu Jiang ◽  
Shiwei Wang ◽  
...  
Keyword(s):  
Visible Spectrum ◽  
White Leds ◽  
Zns Nanocrystals

“Flash” synthesis of “giant” Mn-doped CdS/ZnS nanocrystals for high photostability

RSC Advances ◽  
2015 ◽  
Vol 5 (108) ◽  
pp. 88921-88927 ◽  
Author(s):  
Ruilin Xu ◽  
Chen Liao ◽  
Huichao Zhang ◽  
Bo Huang ◽  
Kai Fan ◽  
...  
Keyword(s):  
White Leds ◽  
Zns Nanocrystals ◽  
Mn Doped

“Flash” synthesis of “giant” Mn-doped CdS/ZnS nanocrystals with high photostability is developed for the application in white LEDs.

Modification of Spontaneous Emission of (CdSe)ZnS Nanocrystals Embedded in Nanoimprinted Photonic Crystals

2008 ◽  
Vol 8 (2) ◽  
pp. 535-539 ◽  
Author(s):  
V. Reboud ◽  
N. Kehagias ◽  
M. Zelsmann ◽  
M. Striccoli ◽  
M. Tamborra ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Nanoimprint Lithography ◽  
Extraction Efficiency ◽  
Visible Spectrum ◽  
Light Extraction Efficiency ◽  
Band Edge Emission ◽  
Functional Material ◽  
Edge Emission ◽  
Zns Nanocrystals

Highly luminescent (CdSe)ZnS nanocrystals, with band edge emission in the red region of the visible spectrum, were successfully synthesized and incorporated in a resist, namely mr-NIL 6000. The nanocomposite material was imprinted by using conventional nanoimprint lithography (NIL) process. We report on the fabrication and characterization of nanoimprinted photonic crystals in this new functional material. Experiments showed good imprint properties of the NC/polymer based material and that the surface nanostructuration improves the light extraction efficiency by over 2 compared to a nanoimprinted unpatterned surface.

Silica-Coated InP/ZnS Nanocrystals as Converter Material in White LEDs

2008 ◽  
Vol 20 (21) ◽  
pp. 4068-4073 ◽  
Author(s):  
Jan Ziegler ◽  
Shu Xu ◽  
Erol Kucur ◽  
Frank Meister ◽  
Miroslaw Batentschuk ◽  
...  
Keyword(s):  
White Leds ◽  
Zns Nanocrystals

Full-visible-spectrum lighting enabled by an excellent cyan-emitting garnet phosphor

2020 ◽  
Vol 8 (14) ◽  
pp. 4934-4943 ◽  
Author(s):  
Jia Liang ◽  
Balaji Devakumar ◽  
Liangling Sun ◽  
Shaoying Wang ◽  
Qi Sun ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
Visible Spectrum ◽  
White Leds ◽  
Color Rendering

Cyan-emitting Ca2YHf2Al3O12:xCe3+ garnet phosphors with a high photoluminescence quantum efficiency of up to 89.5% were developed for fabricating high color rendering warm-white LEDs.

Structural and Optical Investigation of Mn-Doped ZnS Nanocrystals

2005 ◽  
Vol 475-479 ◽  
pp. 1795-1798 ◽  
Author(s):  
W.Q. Peng ◽  
S.C. Qu ◽  
G.W. Cong ◽  
Z.G. Wang
Keyword(s):  
Visible Spectrum ◽  
Optical Investigation ◽  
X Ray Diffraction ◽  
High Concentration ◽  
Zinc Blende ◽  
Order Of Magnitude ◽  
Zns Nanocrystals ◽  
Average Size ◽  
Mn Doped ◽  
Zinc Blende Structure

Using a solution-based chemical method, we have prepared ZnS nanocrystals doped with high concentration of Mn2+. The X-ray diffraction analysis confirmed a zinc blende structure. The average size was about 3 nm. Photoluminescence spectrum showed room temperature emission in the visible spectrum, which consisted of the defect-related emission and the 4 T1-6 A1 emission of Mn2+ ions. Compared with the undoped sample, the luminescence of the ZnS:Mn sample is enhanced by more than an order of magnitude, which indicated that the Mn2+ ions can efficiently boost the luminescence of ZnS nanocrystals.

Liquid-liquid extraction of succinate using a dicopper cryptate

2020 ◽  
Author(s):  
Riccardo Mobili ◽  
Sonia La Cognata ◽  
Francesca Merlo ◽  
Andrea Speltini ◽  
Massimo Boiocchi ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Visible Spectrum ◽  
Tca Cycle ◽  
Residual Concentration ◽  
Waste Products ◽  
Liquid Liquid Extraction ◽  
The Tca Cycle ◽  
Quantitative Extraction ◽  
Uv Visible

<div> <p>The extraction of the succinate dianion from a neutral aqueous solution into dichloromethane is obtained using a lipophilic cage-like dicopper(II) complex as the extractant. The quantitative extraction exploits the high affinity of the succinate anion for the cavity of the azacryptate. The anion is effectively transferred from the aqueous phase, buffered at pH 7 with HEPES, into dichloromethane. A 1:1 extractant:anion adduct is obtained. Extraction can be easily monitored by following changes in the UV-visible spectrum of the dicopper complex in dichloromethane, and by measuring the residual concentration of succinate in the aqueous phase by HPLC−UV. Considering i) the relevance of polycarboxylates in biochemistry, as e.g. normal intermediates of the TCA cycle, ii) the relevance of dicarboxylates in the environmental field, as e.g. waste products of industrial processes, and iii) the recently discovered role of succinate and other dicarboxylates in pathophysiological processes including cancer, our results open new perspectives for research in all contexts where selective recognition, trapping and extraction of polycarboxylates is required. </p> </div>

Sign in / Sign up

Export Citation Format

Share Document