Hybrid Electrochemical/Chemical Synthesis of Supported, Luminescent Semiconductor Nanocrystallites with Size Selectivity:  Copper(I) Iodide

Hsiao, G.; Anderson, Marc; Gorer, S.; Harris, Daniel K.; Penner, Reginald M.

doi:10.1021/ja9630755

Cited by 89 publications

(86 citation statements)

References 36 publications

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“…Sasha Gorer investigated the effect of decoupling on the PL emission properties of cadmium sulfide nanocrystals prepared using the E/C method. Typically, the PL emission lines which are observed for thousands of E/C-synthesized CuI 20 and CdS 23 nanocrystals are 50-150 meV wide (i.e., the full width taken at half the maximum intensity). Shown in Figure 6, for example, is a PL emission spectrum for approximately 300 000, 80-Å-diameter CdS nanocrystals having a width of 125 meV.…”

Section: "Decoupling" For Improved Particle Size Monodispersitymentioning

confidence: 99%

Hybrid Electrochemical/Chemical Synthesis of Quantum Dots

Penner

2000

Acc. Chem. Res.

115

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The "electrochemical/chemical method" (or "E/C method") is a new wet chemical method for synthesizing semiconductor quantum dots on graphite surfaces. The E/C synthesis of quantum dots composed of the generic semiconducting salt, MX, typically involves three steps: (1) electrochemical deposition of nanoparticles of the metal, M°, from a solution of metal ions, M n+ ; (2) electrochemical oxidation of these metal particles to MOn/2, and; (3) displacement of the oxygen from MOn/2 using HX (for example) to yield nanoparticles of MX. This conversion from metal to metal oxide to metal salt occurs on a particle-by-particle basis; that is, each metal nanoparticle is converted into a semiconductor nanoparticle. E/C-synthesized -CuI and CdS quantum dots possess many of the attributes of quantum dots synthesized using molecular beam epitaxy, including epitaxial orientation on the graphite surface, a narrow size dispersion, and strong, particle size-tunable photoluminescence. However, the E/C method is faster, cheaper, and applicable to a greater number of materials.

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Section: "Decoupling" For Improved Particle Size Monodispersitymentioning

confidence: 99%

Hybrid Electrochemical/Chemical Synthesis of Quantum Dots

Penner

2000

Acc. Chem. Res.

115

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“…The advantages of electrodeposition compared with other techniques include low process temperature, low cost and capability of controlling orientations, morphologies and chirality of the deposited films [14][15][16][17][18]. Penner and co-workers have shown that CuI quantum dots can be grown through hybrid electrochemical/chemical method [19]. Other solution-phase based methods have also been explored to grow CuI-based thin films, such as chemical solution [20,21] and hydrothermal synthesis [22].…”

Section: Introductionmentioning

confidence: 99%

Electrodeposition and optical properties of highly oriented γ-CuI thin films

Kang¹,

Liu²,

Chen³

et al. 2010

Electrochimica Acta

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“…Moreover, the characteristic states of the films can be easily controlled by varying the preparation conditions, such as potential, current density, temperature, and pH used during the electrolysis. Until now, high-precision oxide films, such as epitaxial [8,9], superlattice [10], quantum dot [11,12] and noble metal doped films [13] have been prepared by the electrochemical method.…”

Section: Introductionmentioning

confidence: 99%

Optimization of electrochemical synthesis conditions for dense and doped ceria thin films

Kamada¹,

Enomoto²,

Hojo³

2009

Electrochimica Acta

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In the present study, the appropriate electrolysis conditions were determined for attaining doped ceria thin films with a high density and adhesion in an aqueous solution containing of Ce 3+ and Sm 3+ ions. Based on a comparison of the anodic and cathodic polarizations, while the former only induced the deposition of Ce 3+ , the latter accomplished the simultaneous deposition of Ce and Sm species. Under an applied cathodic bias below the hydrogen evolution potential, the Ce 3+ and Sm 3+ were reacted with OH -ions generated by the reduction of water molecules, and then were deposited on the electrode as a hydroxide. The hydroxide was subsequently oxidized and dehydrated to form the ceria-based thin layer. The morphologies of the as-deposited films were significantly altered on the basis of the applied potential. Moreover, the addition of acetic acid to the electrolysis bath caused the production of a transparent, dense, and adherent film. The XRD pattern and Raman spectrum of the thin film revealed that the film was crystallized as the fluorite structure without any heat treatment, and Sm 3+ is substituted at the Ce 4+ site. Moreover, the Sm content in the film could be easily controlled by the metal concentration in the solution.

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Hybrid Electrochemical/Chemical Synthesis of Supported, Luminescent Semiconductor Nanocrystallites with Size Selectivity: Copper(I) Iodide

Cited by 89 publications

References 36 publications

Hybrid Electrochemical/Chemical Synthesis of Quantum Dots

Hybrid Electrochemical/Chemical Synthesis of Quantum Dots

Electrodeposition and optical properties of highly oriented γ-CuI thin films

Optimization of electrochemical synthesis conditions for dense and doped ceria thin films

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