Surface Modification of CdSe and CdS Quantum Dots-Experimental and Density Function Theory Investigation
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منابع مشابه
Modification of spontaneous emission from CdSe/CdS quantum dots in the presence of a semiconductor interface.
The spontaneous-emission lifetime of CdSe/CdS core-shell quantum dots was studied as a function of the distance between the dots and a polished Si surface. The experimental results reveal a significant modification of the spontaneous-emission rate of the quantum dots by the Si surface.
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Ab initio computational studies were performed for CdSe nanocrystals (NCs) over a wide variety of sizes ranging from 8 to 150 atoms in conjunction with recent experimental work. The density functional based calculations indicate substantial relaxations. Changes in coordination of surface atoms were found to play a crucial role in determining the NC stability and optical properties. While optima...
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تاریخ انتشار 2017