A novel two-step controlled basic water phase method for synthesizing size-tunable CdTe/Cd(OH)2 core/shell quantum dots with high quantum yield and excellent stability

Wang, Beibei; Huan, Shang; Nie, Cuiping; Wang, Qi; Ma, Meihu; Cai, Zhaoxia

doi:10.1016/j.jlumin.2013.05.007

Cited by 8 publications

(6 citation statements)

References 45 publications

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“…Water-soluble and high-luminescent CdTe QDs were synthesized in aqueous solution based on a published method by our laboratory [27]. Briefly, two color QDs, with maximum emission wavelength at 514 nm (green-emitting) and 578 nm (orange-emitting), were used as donor (QDs (D) ) and acceptor (QDs (A) ) at the suitable concentration, respectively.…”

Section: Preparation Of Water-compatible Qdsmentioning

confidence: 99%

Two-color quantum dots-based fluorescence resonance energy transfer for rapid and sensitive detection of Salmonella on eggshells

Wang

Jin

et al. 2015

Journal of Photochemistry and Photobiology A: Chemistry

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Section: Preparation Of Water-compatible Qdsmentioning

confidence: 99%

Two-color quantum dots-based fluorescence resonance energy transfer for rapid and sensitive detection of Salmonella on eggshells

Wang

Jin

et al. 2015

Journal of Photochemistry and Photobiology A: Chemistry

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“…These problems are, however, very surmountable. Whilst the current costs are prohibitive (a few mg of QD material cost >$100) the syntheses are typically straightforward solution based methods (albeit carefully controlled) [18,24]. As such, the processes will be easily scalable to larger quantities which should reduce the cost down significantly.…”

Section: Towards Commercializationmentioning

confidence: 99%

“…The PLQY of the QDs used in this study was ∼50%. There are many examples of QDs with higher PLQYs and it seems only a matter of time before these become the commercial standard [16,24]. Indeed as the PLQY of commercial QDs increases towards unity all emission wavelengths can be expected to become performance enhancing.…”

Section: Towards Commercializationmentioning

confidence: 99%

Accessing the quantum palette: quantum-dot spectral conversion towards the BIPV application of thin-film micro-modules

Hodgson¹,

Kartopu²,

Rugen-Hankey³

et al. 2015

J. Opt.

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To demonstrate the potential for building integrated photovoltaics (BIPV) incorporation of thin-film photovoltaics, commercially available quantum dots (QDs) have been deposited, as part of a poly(methyl methacrylate) (PMMA) composite film, on a cadmium telluride (CdTe) micro-module. This resulted in an increase in photocurrent generation through the luminescent down-shifting (LDS) process. The optical properties of these films were characterized through UV–vis spectroscopy. The impact of the film on the micro-module was studied through current–voltage (I–V) and external quantum efficiency measurements. Further layers were added to the initial single-layer LDS film, however no additional improvement to the micro-module were observed. Additionally, a range of emission wavelengths have been explored. The majority of these films, when tested on a CdTe device, were shown to improve the photocurrent generation whilst also visually displaying the vivid colour palette provided by quantum confined materials. The future feasibility of using QD based LDS films for large scale BIPV-based power generation has also been discussed.

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“…Mercaptoacetic acid (MAA) is a thiolate form, which was utilized as a stabilizer agent in the synthesis and assembly of CdTe nanoparticles. Mercaptoacetic acid is a bifunctional molecule, which has thiols and carboxylic acid groups, which are absorbed on the surface of the metal creating stable monolayers [8][9][10][11][12]. Due to the high confinement of the charge carrier, CdTe nanoparticles should have enhanced optical characteristics (nonlinear), which may be helpful for electro-optical applications [10,11].…”

Section: Introductionmentioning

confidence: 99%

Facile aqueous synthesis, structural and luminescence properties for CdTe@FeOOH (Core/Shell)

El-sadek,

Elnobi,

Wasly

et al. 2023

Phys. Scr.

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Seed-mediated growth, a straightforward technique with a low reaction temperature and low cost, was used to create multi-functional core/shell nanoparticles (CdTe@FeOOH). X-Ray Diffraction (XRD), High-resolution transmission electron microscopy (HTEM), Energy-dispersive x-ray (EDX), Fourier-transform infrared techniques (FT-IR), and Differential Thermal Analysis (DTA) were utilized to study the structure and composition of the as-prepared CdTe@FeOOH quantum dots (QDs). Photoluminescence (PL) properties of CdTe@FeOOH (Core/Shell) in an aqueous solution were studied by steady-state and time-resolved PL spectroscopy. The PL lifetime of CdTe@FeOOH QDs was reduced as a consequence of PL quenching. This results in the electron transfer mechanism being efficient, which reduces electron–hole recombination in the core–shell composite. The utilization of core–shell nanospheres of this nature presents numerous potentialities for applications in the field of photocatalysis.

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A novel two-step controlled basic water phase method for synthesizing size-tunable CdTe/Cd(OH)2 core/shell quantum dots with high quantum yield and excellent stability

Cited by 8 publications

References 45 publications

Two-color quantum dots-based fluorescence resonance energy transfer for rapid and sensitive detection of Salmonella on eggshells

Two-color quantum dots-based fluorescence resonance energy transfer for rapid and sensitive detection of Salmonella on eggshells

Accessing the quantum palette: quantum-dot spectral conversion towards the BIPV application of thin-film micro-modules

Facile aqueous synthesis, structural and luminescence properties for CdTe@FeOOH (Core/Shell)

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