Photoluminescence depending on the ZnS shell thickness of CdS/ZnS core-shell semiconductor nanoparticles

Loukanov, Alexandrе; Dushkin, Ceco D.; Papazova, K. I.; Kirov, Andrey; Abrashev, M. V.; Adachi, Eiki

doi:10.1016/j.colsurfa.2004.06.016

Cited by 68 publications

(30 citation statements)

References 7 publications

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“…Nevertheless, it is not known how such templates control the size and shape of the resulting nanoparticles, and therefore, this issue still requires further examination. It is known that type and concentration of surfactant [15][16][17], both oil [13,15], and alcohol types [18][19][20][21][22], droplet core size [11], speed of microemulsion mixing [23] and particle aging [24], influence particle shape, size and/or growth rate. For example, it has been found that the particle size of CdS, ZnS or AgCl, can be controlled by the microemulsion water pool size (in terms of the water solubility parameter W = [water]/[surfactant]) [10,12].…”

Section: Introductionmentioning

confidence: 99%

Generation of metal oxide nanoparticles in optimised microemulsions

Bumajdad

Eastoe

Zaki

et al. 2007

Journal of Colloid and Interface Science

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Section: Introductionmentioning

confidence: 99%

Generation of metal oxide nanoparticles in optimised microemulsions

Bumajdad

Eastoe

Zaki

et al. 2007

Journal of Colloid and Interface Science

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“…Recently the microemulsion method has been applied for ZnS [6,7] and CdS/ZnS core-shell nanoparticles [8,9]. The main advantages of the microemulsion method are the low temperature, the large volumes of nanoparticle suspensions obtained and the slow reaction kinetics [6,7].…”

Section: Introductionmentioning

confidence: 99%

Growth kinetics of CdSe nanoparticles synthesized in reverse micelles using bis(trimethylsilyl) selenium precursor

Emin¹,

Dushkin

Nakabayashi

et al. 2007

Open Chemistry

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Abstract:We first focus on the kinetics of nanoparticle growth in a microemulsion synthesis of CdSe semiconductor nanocrystals. The process consists of a fast initial stage of typical time constant of the order of 10 3 s followed by a slow stage of time constant of the order of 10 4 s. Growth proceeds similarly to that described for the hot-matrix synthesis of CdSe, underlining the generality of the twostage growth mechanism, irrespective of the matrix type and synthesis conditions. However, the time constant of each stage in the microemulsion synthesis is much larger than in the hot-matrix one. Also, the ratio between the fast and slow time constant is appreciably bigger. We also prove that larger size reverse micelles, obtained by increasing the water:surfactant ratio, generally lead to larger CdSe nanoparticles. Bis(trimethylsilyl) selenium is the crucial precursor for the CdSe nanoparticle synthesis. An intermediate stage of the chemical reaction limiting the bis(trimethylsilyl) selenium production is described theoretically.

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“…It was therefore anticipated that precise control of magnetic impurity doping in coreshell nanoparticles and other nanoscale heterostructures could lead to new functionalities. [15][16][17][18][19][20][21] Chemists now have the ability to selectively dope core-shell nanoparticles with magnetic impurities at a specific and precisely defined radius. 20,[22][23][24] For instance, radial positioncontrolled Mn doping of zinc-blende CdS-ZnS core-shell nanoparticles was achieved using a three-step process which includes CdS-core growth, Mn-dopant growth in a thin spherical doping layer (inside either core or shell), and ZnS-shell growth.…”

Section: -13mentioning

confidence: 99%

Tuninggfactors of core-shell nanoparticles by controlled positioning of magnetic impurities

2016

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We present a theoretical platform for modeling the electronic and magneto-optic properties of magnetically doped core-shell nanoparticles that has, as a central prediction, a mechanism by which the g-factors in these nanoparticles can be tuned over a wide range by controlled positioning of magnetic impurities. We illustrate this effect for wide gap Mn-doped CdS-ZnS core-shell particles and point out several unexpected trends that merit extended experimental investigation. Structure-property relations are also discussed. The ability to tune g-factors will make core-shell nanostructures viable candidates for spintronic applications, and the comprehensive modeling approach outlined here will be a powerful tool for predicting their properties as well as for optimizing the design of novel spintronic devices.

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Photoluminescence depending on the ZnS shell thickness of CdS/ZnS core-shell semiconductor nanoparticles

Cited by 68 publications

References 7 publications

Generation of metal oxide nanoparticles in optimised microemulsions

Generation of metal oxide nanoparticles in optimised microemulsions

Growth kinetics of CdSe nanoparticles synthesized in reverse micelles using bis(trimethylsilyl) selenium precursor

Tuninggfactors of core-shell nanoparticles by controlled positioning of magnetic impurities

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