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bluejay27
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Compared to other semiconductor materials, why is CdS/CdSe being more widely used as quantum dots?
Cost? The stuff's cheap.bluejay27 said:Compared to other semiconductor materials, why is CdS/CdSe being more widely used as quantum dots?
I read that CdS/CdSe are byproducts of iron fillings. They were treated as waste in the past...Bystander said:Cost? The stuff's cheap.
CdS/CdSe quantum dots are more widely used due to their unique properties, such as their tunable bandgap, high quantum yield, and stability. These properties make them suitable for a wide range of applications, from solar cells to biological imaging.
CdS/CdSe quantum dots have a higher resistance to oxidation and photodegradation compared to other types of quantum dots. This is due to their crystalline structure and the presence of a thick inorganic shell, which protects the quantum dots from external factors.
Yes, CdS/CdSe quantum dots can be easily synthesized using a variety of methods, such as colloidal synthesis, hot-injection methods, and microemulsion techniques. This allows for large-scale production at a relatively low cost.
Yes, there is a limitation to the size of CdS/CdSe quantum dots that can be produced. The size of the quantum dots is directly related to their bandgap, and as the size decreases, the bandgap increases. This means that there is a limit to how small the quantum dots can be before they no longer exhibit quantum confinement effects.
CdS/CdSe quantum dots have been extensively used in biological imaging due to their high quantum yield and photostability. They can be easily functionalized with biomolecules, such as antibodies, for targeted imaging of specific cells or tissues. Their small size also allows for deeper tissue penetration, making them ideal for in vivo imaging applications.