scholarly journals Photoluminescence color stability of green-emitting InP/ZnS core/shell quantum dots embedded in silica prepared via hydrophobic routes

RSC Advances ◽  
2018 ◽  
Vol 8 (45) ◽  
pp. 25526-25533 ◽  
Author(s):  
Taichi Watanabe ◽  
Yoshiki Iso ◽  
Tetsuhiko Isobe ◽  
Hirokazu Sasaki
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Color Stability ◽  
Core Shell ◽  
Color Purity ◽  
Emission Color

We prepared and characterized green-emitting silica composites containing InP/ZnS QDs with excellent quantum yield, emission color purity, and photostability.

scholarly journals Enhancing photo-reduction quantum efficiency using quasi-type II core/shell quantum dots

2016 ◽  
Vol 7 (7) ◽  
pp. 4125-4133 ◽  
Author(s):  
Yanyan Jia ◽  
Jinquan Chen ◽  
Kaifeng Wu ◽  
Alex Kaledin ◽  
Djamaladdin G. Musaev ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Quantum Efficiency ◽  
Shell Thickness ◽  
Removal Rate ◽  
Core Shell ◽  
Type Ii ◽  
Fast Increase

Enhancing photoreduction quantum yield in core/shell QDs through an unexpectedly fast increase of hole removal rate with shell thickness.

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.

Enhancement Mechanism of the Photoluminescence Quantum Yield in Highly Efficient ZnS–AgIn5S8 Quantum Dots with Core/Shell Structures

2018 ◽  
Vol 122 (18) ◽  
pp. 10125-10132 ◽  
Author(s):  
Seonghyun Jeong ◽  
Soyeon Yoon ◽  
So Yeon Chun ◽  
Hee Chang Yoon ◽  
Noh Soo Han ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Shell Structures ◽  
Core Shell ◽  
Enhancement Mechanism ◽  
Highly Efficient ◽  
Photoluminescence Quantum Yield

scholarly journals Alternating layer addition approach to CdSe/CdS core/shell quantum dots with near-unity quantum yield and high on-time fractions

2012 ◽  
Vol 3 (6) ◽  
pp. 2028 ◽  
Author(s):  
Andrew B. Greytak ◽  
Peter M. Allen ◽  
Wenhao Liu ◽  
Jing Zhao ◽  
Elizabeth R. Young ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Core Shell

scholarly journals Synthesis of luminescent core/shell α-Zn3P2/ZnS quantum dots

Nanoscale ◽  
2020 ◽  
Vol 12 (40) ◽  
pp. 20952-20964
Author(s):  
Ingrid J. Paredes ◽  
Clara Beck ◽  
Scott Lee ◽  
Shuzhen Chen ◽  
Mersal Khwaja ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Surface Oxidation ◽  
Core Shell ◽  
Defect States ◽  
Optoelectronic Applications

Optoelectronic applications of Zn3P2 quantum dots have long been hindered by surface oxidation and defect states leading to low PL quantum yield. The authors present shelling of Zn3P2 with ZnS to prevent oxidation and obtain luminescent particles.

(Keynote) Band-Edge Emission from AgInS2/Ga2S3 Core/Shell Quantum Dots and Enhancement of Their Quantum Yield

2020 ◽  
Vol MA2020-02 (61) ◽  
pp. 3076-3076
Author(s):  
Susumu Kuwabata ◽  
Taro Uematsu ◽  
Watcharaporn Hoisang ◽  
Tsukasa Torimoto
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Band Edge ◽  
Core Shell ◽  
Band Edge Emission ◽  
Edge Emission
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