Journal ArticleDOI
Characterization and photoluminescence of CdS nanoparticles synthesized in diethyl ether-sodium dioctylsulfosuccinate-water microemulsion system
TLDR
In this paper, spherical cadmium sulfide (CdS) nanoparticles, 4-5 nm in diameter, were synthesized using an aqueous mixture of Cd(NO3)24H2O and sodium sulfide solution in a microemulsion system and the effects of the water to surfactant molar ratio (W = [water]/[surfactant]), the concentration of precursors, the Cd to S precursor ratio, and the density of ultrasonic wave on the properties of the nanoparticles were examined.Abstract:
Spherical cadmium sulfide (CdS) nanoparticles, 4–5 nm in diameter, were synthesized using an aqueous cadmium nitride [Cd(NO3)24H2O] and sodium sulfide [Na2S9H2O] solution in a microemulsion system. The effects of the water to surfactant molar ratio (W = [water]/[surfactant]), the concentration of precursors, the Cd to S precursor ratio, and the density of the ultrasonic wave on the properties of the CdS nanoparticles were examined. The luminescent properties and the size effect of the nanoparticles were characterized using UV–vis absorption and photoluminescence (PL) spectra. The PL emission intensity did not change significantly with an increase in precursor and surfactant concentrations. The absorption edge and PL peak energy of the CdS nanoparticles shifted to shorter wavelengths with an increase in cadmium nitride concentration owing to a phase change and a decrease in CdS nanoparticle size.read more
Citations
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Antiproliferative effects on human lung cell lines A549 activity of cadmium selenide nanoparticles extracted from cytotoxic effects: Investigation of bio-electronic application.
K. Kaviyarasu,K. Kaviyarasu,K. Kanimozhi,N. Matinise,C. Maria Magdalane,Genene Tessema Mola,John Kennedy,Malik Maaza +7 more
TL;DR: Comparison of cytotoxicity effect between cells-particle interactions, viability test, membrane integrity and oxidative stress were investigated and XRD showed a strong peak associated with (111) plane of hexagonal CdSe suggesting formation of highly orientated nanoparticles.
Journal ArticleDOI
White emission using mixtures of CdSe quantum dots and PMMA as a phosphor
TL;DR: In this paper, white light emitting diodes (LEDs) were fabricated using an InGaN 460-nm blue emission LED chip as the excitation source and CdSe quantum dots dispersed in PMMA as the phosphor.
Journal ArticleDOI
Effect of heat-treatment on CdS and CdS/ZnS nanoparticles
TL;DR: In this article, a heptane-AOT-water microemulsion system was used to synthesize mono-dispersed and spherical cadmium sulfide (CdS) and CdS/ZnS nanoparticles.
Journal ArticleDOI
White light emission from blue InGaN LED precoated with conjugated copolymer/quantum dots as hybrid phosphor
TL;DR: In this article, a white LED was fabricated using a blue InGaN LED precoated conjugated copolymer/quantum dots (QDs) composite (green-emitting Poly {(9,9-dioctyl-2,7-divinylenefluorenylene)-alto-co-(2-methoxy-5,2-ethylhexyloxy)-1,4-phenylene)}/red-emiting CdSe quantum dots) as a hybrid phosphor.
References
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TL;DR: In this article, the authors focus on the properties of quantum dots and their ability to join the dots into complex assemblies creates many opportunities for scientific discovery, such as the ability of joining the dots to complex assemblies.
Journal ArticleDOI
Nanobeam mechanics: Elasticity, strength, and toughness of nanorods and nanotubes
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Journal ArticleDOI
Shape control of CdSe nanocrystals
Xiaogang Peng,Liberato Manna,Liberato Manna,Liberato Manna,Weidong Yang,Weidong Yang,Weidong Yang,Juanita N. Wickham,Juanita N. Wickham,Juanita N. Wickham,Erik C. Scher,Erik C. Scher,Erik C. Scher,Andreas Kadavanich,Andreas Kadavanich,Andreas Kadavanich,A. P. Alivisatos,A. P. Alivisatos,A. P. Alivisatos +18 more
TL;DR: Control of the growth kinetics of the II–VI semiconductor cadmium selenide can be used to vary the shapes of the resulting particles from a nearly spherical morphology to a rod-like one, with aspect ratios as large as ten to one.
Journal ArticleDOI
Light-emitting diodes made from cadmium selenide nanocrystals and a semiconducting polymer
TL;DR: In this article, a hybrid organic/inorganic electroluminescent device was constructed based on the recombination of holes injected into a layer of semiconducting p-paraphenylene vinylene (PPV) with electrons injected into the multilayer film of cadmium selenide nanocrystals.
Journal Article
Light-emitting diodes made from cadmium selenide nanocrystals and a semiconducting polymer
TL;DR: In this article, a hybrid organic/inorganic electroluminescent device was constructed based on the recombination of holes injected into a layer of semiconducting p-paraphenylene vinylene (PPV) with electrons injected into the multilayer film of cadmium selenide nanocrystals.