Friday, February 11, 2011

Disappearance and Recovery of Luminescence in Bi3+, Eu3+ Codoped YPO4 Nanoparticles Due to the Presence of Water Molecules Up to 800 °C

Disappearance and Recovery of Luminescence in Bi3+, Eu3+ Codoped YPO4 Nanoparticles Due to the Presence of Water Molecules Up to 800 °C: "
TOC Graphic
Journal of the American Chemical Society
DOI: 10.1021/ja1092437

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Remote Excitation of Surface-Enhanced Raman Scattering on Single Au Nanowire with Quasi-Spherical Termini

Remote Excitation of Surface-Enhanced Raman Scattering on Single Au Nanowire with Quasi-Spherical Termini: "
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The Journal of Physical Chemistry C
DOI: 10.1021/jp109888e

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Magnetic Iron Oxide Nanoparticles in 10−40 nm Range: Composition in Terms of Magnetite/Maghemite Ratio and Effect on the Magnetic Properties

Magnetic Iron Oxide Nanoparticles in 10−40 nm Range: Composition in Terms of Magnetite/Maghemite Ratio and Effect on the Magnetic Properties: "
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Chemistry of Materials
DOI: 10.1021/cm103188a

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Modification of NaYF4:Yb,Er@SiO2 Nanoparticles with Gold Nanocrystals for Tunable Green-to-Red Upconversion Emissions

Modification of NaYF4:Yb,Er@SiO2 Nanoparticles with Gold Nanocrystals for Tunable Green-to-Red Upconversion Emissions: "
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The Journal of Physical Chemistry C
DOI: 10.1021/jp110603r

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Monday, February 07, 2011

Spatially Modulated Two-Photon Luminescence from Si−Au Core−Shell Nanowires

Spatially Modulated Two-Photon Luminescence from Si−Au Core−Shell Nanowires: "
TOC Graphic
The Journal of Physical Chemistry C
DOI: 10.1021/jp1079179

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Effects of Self-Assembled Monolayers on Solid-State CdS Quantum Dot Sensitized Solar Cells

Effects of Self-Assembled Monolayers on Solid-State CdS Quantum Dot Sensitized Solar Cells: "
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ACS Nano
DOI: 10.1021/nn103371v

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CdS quantum dot-sensitized ZnO nanorod-based photoelectrochemical solar cells

CdS quantum dot-sensitized ZnO nanorod-based photoelectrochemical solar cells: "
Abstract
ZnO nanorods have been grown using ZnO seed layer onto ITO-coated glass substrates. CdS quantum dots have been deposited onto
ZnO nanorods using simple precursors by chemical method and the assembly of CdS quantum dots with ZnO nanorod has been used
as photo-electrode in quantum dot-sensitized solar cells. X-ray diffraction results show that ZnO seed layer, ZnO nanorods,
and CdS quantum dot-sensitized ZnO nanorods exhibit hexagonal structure. The particle size of CdS nanoparticle is 5 nm. The
surface morphology studied using scanning electron microscope shows that the top surface of the vertically aligned ZnO nanorods
is fully covered by CdS quantum dots. The ZnO nanorods have diameter ranging from 100 to 200 nm. The absorption spectra reveal
that the absorption edge of CdS quantum dot-sensitized ZnO nanorods shift toward longer wavelength side when compared to the
absorption edge of ZnO. The efficiency of the fabricated CdS quantum dot-sensitized ZnO nanorod-based solar cell is 0.69%
and is the best efficiency reported so far for this type of solar cells.

  • Content Type Journal Article
  • Pages 1-7
  • DOI 10.1007/s11051-011-0241-2
  • Authors
    • M. Thambidurai, Department of Physics, Coimbatore Institute of Technology, Coimbatore, India
    • N. Muthukumarasamy, Department of Physics, Coimbatore Institute of Technology, Coimbatore, India
    • N. Sabari Arul, Department of Nanoscience and Technology, Bharathiar University, Coimbatore, India
    • S. Agilan, Department of Physics, Coimbatore Institute of Technology, Coimbatore, India
    • R. Balasundaraprabhu, Department of Physics, PSG College of Technology, Coimbatore, India
"

Friday, February 04, 2011

Optical Properties of WO3/Ag/WO3 Multilayer As Transparent Cathode in Top-Emitting Organic Light Emitting Diodes

Optical Properties of WO3/Ag/WO3 Multilayer As Transparent Cathode in Top-Emitting Organic Light Emitting Diodes: "
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The Journal of Physical Chemistry C
DOI: 10.1021/jp109943b

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Synthesis of Gold Nanoparticles in Liquid Polyethylene Glycol by Sputter Deposition and Temperature Effects on their Size and Shape

Synthesis of Gold Nanoparticles in Liquid Polyethylene Glycol by Sputter Deposition and Temperature Effects on their Size and Shape: "
TOC Graphic
The Journal of Physical Chemistry C
DOI: 10.1021/jp110455k

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Fluorescence and Electroluminescence Quenching Evidence of Interfacial Charge Transfer in Poly (3-hexylthiophene): Graphene Oxide Bulk Heterojunction Photovoltaic Devices

Fluorescence and Electroluminescence Quenching Evidence of Interfacial Charge Transfer in Poly (3-hexylthiophene): Graphene Oxide Bulk Heterojunction Photovoltaic Devices: "
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ACS Nano
DOI: 10.1021/nn1022457

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Ultrafast Laser Ablation and Deposition of Wide Band Gap Semiconductors

Ultrafast Laser Ablation and Deposition of Wide Band Gap Semiconductors: "
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The Journal of Physical Chemistry C
DOI: 10.1021/jp108489k

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New Section: Solar

I have recently added a section entitled Solar. This is primarily for advances in dye sensitized solar cell research. I hope you Enjoy :)

Efficient Synthetic Access to Cationic Dendrons and Their Application for ZnO Nanoparticles Surface Functionalization: New Building Blocks for Dye-Sensitized Solar Cells

Efficient Synthetic Access to Cationic Dendrons and Their Application for ZnO Nanoparticles Surface Functionalization: New Building Blocks for Dye-Sensitized Solar Cells: "
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Journal of the American Chemical Society
DOI: 10.1021/ja106076h

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Growth of Various TiO2 Nanostructures for Dye-Sensitized Solar Cells

Growth of Various TiO2 Nanostructures for Dye-Sensitized Solar Cells: "
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The Journal of Physical Chemistry C
DOI: 10.1021/jp110743m

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Plasmonic Dye-Sensitized Solar Cells Using Core−Shell Metal−Insulator Nanoparticles

Plasmonic Dye-Sensitized Solar Cells Using Core−Shell Metal−Insulator Nanoparticles: "
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Nano Letters
DOI: 10.1021/nl1031106

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Quantifying Regeneration in Dye-Sensitized Solar Cells

Quantifying Regeneration in Dye-Sensitized Solar Cells: "
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The Journal of Physical Chemistry C
DOI: 10.1021/jp1101048

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An Energetic and Kinetic View on Cyclopentadithiophene Dye-Sensitized Solar Cells: The Influence of Fluorine vs Ethyl Substituent

An Energetic and Kinetic View on Cyclopentadithiophene Dye-Sensitized Solar Cells: The Influence of Fluorine vs Ethyl Substituent: "
TOC Graphic
The Journal of Physical Chemistry C
DOI: 10.1021/jp110384n

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Efficient Dye-Sensitized Solar Cells with an Organic Photosensitizer Featuring Orderly Conjugated Ethylenedioxythiophene and Dithienosilole Blocks

Efficient Dye-Sensitized Solar Cells with an Organic Photosensitizer Featuring Orderly Conjugated Ethylenedioxythiophene and Dithienosilole Blocks: "Chemistry of Materials, Volume 22, Issue 5, Page 1915-1925, March 9, 2010."

Mesoporous Titania (A) Nanoparticles Prepared by a Solvothermally Treated Organic Small Molecule System: Formation Mechanism and Behavior in Photocatalysis and Dye-Sensitized Solar Cells

Mesoporous Titania (A) Nanoparticles Prepared by a Solvothermally Treated Organic Small Molecule System: Formation Mechanism and Behavior in Photocatalysis and Dye-Sensitized Solar Cells: "The Journal of Physical Chemistry C, Volume 114, Issue 3, Page 1444-1450, January 28, 2010."

Influence of the Counterion on the Synthesis of ZnO Mesocrystals under Solvothermal Conditions

Influence of the Counterion on the Synthesis of ZnO Mesocrystals under Solvothermal Conditions: "

Abstract

Polymers and coordinating solvents have been shown to serve as templating agents to assist the precipitation of ZnO nanoparticles and address their morphology. In this work we show for the first time that a difference in the coordination strength between the polymer (poly-N-vinylpyrrolidone (PVP)) and the two ZnII precursor salts (nitrate and acetate) is able to promote or suppress the formation of mesocrystalline structures and even more importantly to tune their three-dimensional organization. On the basis of FTIR and 13C NMR spectroscopic studies, we propose that not only the polymer (PVP) but also the solvent (DMF) play a key role as directing agents.
Thumbnail image of graphical abstract
Not “just”the anion! The choice of the anion of the starting salt precursor is a critical point for the synthesis of ZnO mesocrystals under solvothermal conditions. In the present paper two anions, nitrate and acetate, namely a non-coordinating and a chelating anion, are considered as starting salts for ZnO mesocrystals. Their different behavior in the same experimental conditions is highlighted (see picture).
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