Journal of the American Chemical Society, volume 119, issue 30, pages 7019-7029

Epitaxial Growth of Highly Luminescent CdSe/CdS Core/Shell Nanocrystals with Photostability and Electronic Accessibility

Publication typeJournal Article
Publication date1997-07-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor15
ISSN00027863, 15205126
General Chemistry
Catalysis
Biochemistry
Colloid and Surface Chemistry
Abstract
The synthesis of epitaxially grown, wurtzite CdSe/CdS core/shell nanocrystals is reported. Shells of up to three monolayers in thickness were grown on cores ranging in diameter from 23 to 39 A. Shell growth was controllable to within a tenth of a monolayer and was consistently accompanied by a red shift of the absorption spectrum, an increase of the room temperature photoluminescence quantum yield (up to at least 50%), and an increase in the photostability. Shell growth was shown to be uniform and epitaxial by the use of X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), and optical spectroscopy. The experimental results indicate that in the excited state the hole is confined to the core and the electron is delocalized throughout the entire structure. The photostability can be explained by the confinement of the hole, while the delocalization of the electron results in a degree of electronic accessibility that makes these nanocrystals...

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GOST |
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GOST Copy
Peng X. et al. Epitaxial Growth of Highly Luminescent CdSe/CdS Core/Shell Nanocrystals with Photostability and Electronic Accessibility // Journal of the American Chemical Society. 1997. Vol. 119. No. 30. pp. 7019-7029.
GOST all authors (up to 50) Copy
Peng X., Schlamp M. C., Kadavanich A. V., ALIVISATOS A. P. Epitaxial Growth of Highly Luminescent CdSe/CdS Core/Shell Nanocrystals with Photostability and Electronic Accessibility // Journal of the American Chemical Society. 1997. Vol. 119. No. 30. pp. 7019-7029.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1021/ja970754m
UR - https://doi.org/10.1021/ja970754m
TI - Epitaxial Growth of Highly Luminescent CdSe/CdS Core/Shell Nanocrystals with Photostability and Electronic Accessibility
T2 - Journal of the American Chemical Society
AU - ALIVISATOS, A. P.
AU - Schlamp, Michael C
AU - Kadavanich, Andreas V.
AU - Peng, Xiaogang
PY - 1997
DA - 1997/07/01 00:00:00
PB - American Chemical Society (ACS)
SP - 7019-7029
IS - 30
VL - 119
SN - 0002-7863
SN - 1520-5126
ER -
BibTex |
Cite this
BibTex Copy
@article{1997_Peng,
author = {A. P. ALIVISATOS and Michael C Schlamp and Andreas V. Kadavanich and Xiaogang Peng},
title = {Epitaxial Growth of Highly Luminescent CdSe/CdS Core/Shell Nanocrystals with Photostability and Electronic Accessibility},
journal = {Journal of the American Chemical Society},
year = {1997},
volume = {119},
publisher = {American Chemical Society (ACS)},
month = {jul},
url = {https://doi.org/10.1021/ja970754m},
number = {30},
pages = {7019--7029},
doi = {10.1021/ja970754m}
}
MLA
Cite this
MLA Copy
Peng, Xiaogang, et al. “Epitaxial Growth of Highly Luminescent CdSe/CdS Core/Shell Nanocrystals with Photostability and Electronic Accessibility.” Journal of the American Chemical Society, vol. 119, no. 30, Jul. 1997, pp. 7019-7029. https://doi.org/10.1021/ja970754m.
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