Journal of Physical Chemistry B, volume 108, issue 44, pages 17119-17123

Colloidal ZnSe, ZnSe/ZnS, and ZnSe/ZnSeS Quantum Dots Synthesized from ZnO

Hsueh-Shih Chen 1
Bertrand Lo 1
Jen Yu Hwang 1
Gwo Yang Chang 1
CHIEN-MING CHEN 1
Shih Jung Tasi 1
Shian Jy Jassy Wang 1
Publication typeJournal Article
Publication date2004-10-08
Quartile SCImago
Q1
Quartile WOS
Q3
Impact factor3.3
ISSN15206106, 15205207
Materials Chemistry
Surfaces, Coatings and Films
Physical and Theoretical Chemistry
Abstract
Colloidal ZnSe quantum dots were successfully synthesized from ZnO in a lauric acid/hexadecylamine mixture. X-ray diffraction patterns indicated that the ZnSe quantum dots possess a wurtzite structure. Transmission electron microscope images of the quantum dots showed that the average diameter are in the range of 25∼60 A. The size-dependent photoluminescence was controlled from 400 to 440 nm with the quantum yields of 6∼10% at room temperature. After passivation with 1.8 monolayer of ZnS overcoat by a traditional two-step method, the quantum yields of ZnSe/ZnS QDs are increased ∼4.5-fold (quantum yield ∼32%). An in-situ method of overcoating was done by directly injecting TOPS into the flask containing ZnSe, ZnO/lauric acid/hexadecylamine, and TOPSe. The photoluminescence quantum yields were improved ∼3.8-fold after introduction of 1.6 monolayer ZnSeS overcoat to the ZnSe QDs.

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GOST Copy
Chen H. et al. Colloidal ZnSe, ZnSe/ZnS, and ZnSe/ZnSeS Quantum Dots Synthesized from ZnO // Journal of Physical Chemistry B. 2004. Vol. 108. No. 44. pp. 17119-17123.
GOST all authors (up to 50) Copy
Chen H., Lo B., Hwang J. Yu., Chang G. Y., CHEN C., Tasi S. J., Wang S. J. J. Colloidal ZnSe, ZnSe/ZnS, and ZnSe/ZnSeS Quantum Dots Synthesized from ZnO // Journal of Physical Chemistry B. 2004. Vol. 108. No. 44. pp. 17119-17123.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1021/jp047035w
UR - https://doi.org/10.1021/jp047035w
TI - Colloidal ZnSe, ZnSe/ZnS, and ZnSe/ZnSeS Quantum Dots Synthesized from ZnO
T2 - Journal of Physical Chemistry B
AU - Lo, Bertrand
AU - Hwang, Jen Yu
AU - Chang, Gwo Yang
AU - CHEN, CHIEN-MING
AU - Tasi, Shih Jung
AU - Wang, Shian Jy Jassy
AU - Chen, Hsueh-Shih
PY - 2004
DA - 2004/10/08 00:00:00
PB - American Chemical Society (ACS)
SP - 17119-17123
IS - 44
VL - 108
SN - 1520-6106
SN - 1520-5207
ER -
BibTex |
Cite this
BibTex Copy
@article{2004_Chen,
author = {Bertrand Lo and Jen Yu Hwang and Gwo Yang Chang and CHIEN-MING CHEN and Shih Jung Tasi and Shian Jy Jassy Wang and Hsueh-Shih Chen},
title = {Colloidal ZnSe, ZnSe/ZnS, and ZnSe/ZnSeS Quantum Dots Synthesized from ZnO},
journal = {Journal of Physical Chemistry B},
year = {2004},
volume = {108},
publisher = {American Chemical Society (ACS)},
month = {oct},
url = {https://doi.org/10.1021/jp047035w},
number = {44},
pages = {17119--17123},
doi = {10.1021/jp047035w}
}
MLA
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MLA Copy
Chen, Hsueh-Shih, et al. “Colloidal ZnSe, ZnSe/ZnS, and ZnSe/ZnSeS Quantum Dots Synthesized from ZnO.” Journal of Physical Chemistry B, vol. 108, no. 44, Oct. 2004, pp. 17119-17123. https://doi.org/10.1021/jp047035w.
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