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Colloidal Multi-Dot Nanorods
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DOI：10.1021/jacs.3c14115.png)
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摘要
En 中文
Colloidal nanorod heterostructures consisting of multiple quantum dots within a nanorod (n-DNRs, where n is the number of quantum dots within a nanorod) are synthesized with alternating segments of CdSe dot and CdS rod via solution heteroepitaxy. The reaction temperature, time dependent ripening, and asymmetry of the wurtzite lattice and the resulting anisotropy of surface ligand steric hindrance are exploited to vary the morphology of the growing quantum dot segments. The alternating CdSe and CdS growth steps can be easily repeated to increment the dot number in unidirectional or bidirectional growth regimes. As an initial exploration of electron occupation effects on their optical properties, asymmetric 2-DNRs consisting of two dots of different lengths and diameters are synthesized and are shown to exhibit a change in color and an unusual photoluminescence quantum yield increase upon photochemical doping.
Keyword:
LIGHT-EMITTING-DIODES
AUGER RECOMBINATION
CDSE/CDS NANORODS
WURTZITE CDSE
SEEDED GROWTH
QUANTUM DOTS
NANOCRYSTALS
ROD
SHELL
HETEROSTRUCTURES
期刊
IF:
15.6
论文数:
20.0W
被引数:
60.2W
机构
引用论文
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