New Insights into the Complexities of Shell Growth and the Strong Influence of Particle Volume in Nonblinking “Giant” Core/Shell Nanocrystal Quantum Dots

2012 ◽  
Vol 134 (23) ◽  
pp. 9634-9643 ◽  
Author(s):  
Yagnaseni Ghosh ◽  
Benjamin D. Mangum ◽  
Joanna L. Casson ◽  
Darrick J. Williams ◽  
Han Htoon ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Strong Influence ◽  
Shell Growth ◽  
Core Shell ◽  
Particle Volume ◽  
Nanocrystal Quantum Dots

‘Giant’ CdSe/CdS Core/Shell Nanocrystal Quantum Dots As Efficient Electroluminescent Materials: Strong Influence of Shell Thickness on Light-Emitting Diode Performance

Nano Letters ◽  
2011 ◽  
Vol 12 (1) ◽  
pp. 331-336 ◽  
Author(s):  
Bhola N. Pal ◽  
Yagnaseni Ghosh ◽  
Sergio Brovelli ◽  
Rawiwan Laocharoensuk ◽  
Victor I. Klimov ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Shell Thickness ◽  
Strong Influence ◽  
Light Emitting Diode ◽  
Core Shell ◽  
Light Emitting ◽  
Nanocrystal Quantum Dots

scholarly journals Three-pulse photon echo induced by the optical transition of excitons in core–shell CdSe/ZnS nanocrystal quantum dots

2011 ◽  
Vol 34 (1) ◽  
pp. 36-41 ◽  
Author(s):  
Shaohua Gong ◽  
Guotao Yang ◽  
Dongmei Ban ◽  
Jun Fu ◽  
Yunliang Fu
Keyword(s):  
Quantum Dots ◽  
Optical Transition ◽  
Photon Echo ◽  
Core Shell ◽  
Pulse Photon ◽  
Nanocrystal Quantum Dots

scholarly journals Imaging and Spectroscopy of Artificial-Atom States in Core/Shell Nanocrystal Quantum Dots

2001 ◽  
Vol 86 (25) ◽  
pp. 5751-5754 ◽  
Author(s):  
Oded Millo ◽  
David Katz ◽  
YunWei Cao ◽  
Uri Banin
Keyword(s):  
Quantum Dots ◽  
Core Shell ◽  
Artificial Atom ◽  
Nanocrystal Quantum Dots ◽  
Imaging And Spectroscopy

Colloidal Synthesis and Properties of InAs/InP and InAs/CdSe Core/Shell Nanocrystals

1999 ◽  
Vol 571 ◽  
Author(s):  
Yun-Wei Cao ◽  
Julia Aksenton ◽  
Victor Soloviev ◽  
Uri Banin
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Photoelectron Spectroscopy ◽  
Shell Growth ◽  
Band Gap Energy ◽  
Colloidal Synthesis ◽  
Core Shell ◽  
Cdse Core ◽  
X Ray ◽  
Photoluminescence Quantum Yield

ABSTRACTHigh-temperature colloidal synthesis of InAs/InP and InAs/CdSe core/shell nanocrystal quantum dots is reported. InP and CdSe shells with several thicknesses were grown on InAs cores ranging in diameter between 20 to 50 Å. Optical spectra, X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and X-ray diffraction (XRD) were used to analyze the core/shell quantum dots and determine their chemical composition, average size, size distributions, and structures. The experimental results indicate that shell growth is uniform, expitaxial, and controllable. For both InP and CdSe shells, growth is accompanied by a red shift of the band gap energy as a result of the extension of the electron wavefunction into the shell region. An increase of the room temperature photoluminescence quantum yield by a factor of∼4 is observed with CdSe shell growth on InAs Cores. The growth of InP shells, however, quenches the photoluminescence quantum yield. The difference is assigned to outer surface effects in core/shell nanocrystals.

PbS/CdS Core/Shell Quantum Dots by Additive, Layer-by-Layer Shell Growth

2016 ◽  
Vol 28 (19) ◽  
pp. 6953-6959 ◽  
Author(s):  
Laxmi Kishore Sagar ◽  
Willem Walravens ◽  
Qiang Zhao ◽  
André Vantomme ◽  
Pieter Geiregat ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Shell Growth ◽  
Core Shell ◽  
Layer By Layer

Highly luminescent blue emitting CdS/ZnS core/shell quantum dots via a single-molecular precursor for shell growth

2011 ◽  
Vol 130 (3) ◽  
pp. 909-914 ◽  
Author(s):  
Xinmei Liu ◽  
Yang Jiang ◽  
Xinzheng Lan ◽  
Yugang Zhang ◽  
Shanying Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Shell Growth ◽  
Core Shell ◽  
Molecular Precursor

scholarly journals ZnSe/ZnS Core/Shell Quantum Dots with Superior Optical Properties through Thermodynamic Shell Growth

Nano Letters ◽  
2020 ◽  
Vol 20 (4) ◽  
pp. 2387-2395 ◽  
Author(s):  
Botao Ji ◽  
Somnath Koley ◽  
Ilya Slobodkin ◽  
Sergei Remennik ◽  
Uri Banin
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Shell Growth ◽  
Core Shell
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