What is cadmium selenide used for?
CdSe quantum dots have been implemented in a wide range of applications including solar cells, light emitting diodes, and biofluorescent tagging. CdSe-based materials also have potential uses in biomedical imaging.
Is cadmium selenide a semiconductor?
Cadmium selenide (CdSe) is a tetrahedral semiconductor with wurtzite structure in the hexagonal modification. CdSe is an optically uniaxial semiconductor with two components of the dielectric function.
How do you make cadmium selenide?
Procedure
- Add 13 mg of CdO to a 25 mL round bottom flask clamped in a heating mantle.
- To the same flask, add by pipet 0.6 mL oleic acid and 10 mL octadecene.
- Heat the cadmium solution.
- Remove approximately 1 mL samples at frequent intervals using a 9 inch glass Pasteur pipet as the CdSe particles grow in size.
Is cadmium selenide ionic or covalent?
ionic compound
Cadmium selenide (CdSe) is a binary, primarily ionic compound with a touch of covalent character. It can take three crystalline forms, but the hexagonal wurtzite structure shown is by far the most common.
Is CdSe toxic?
Results. In adult group, histological studies of testis tissues showed a high toxicity of CdSe: ZnS in 40 mg/kg dose followed by a decrease in lamina propria; destruction in interstitial tissue; deformation of seminiferous tubules; and a reduction in number of spermatogonia, spermatocytes, and spermatids.
What are cadmium selenide quantum dots?
Overview. CdSe quantum dots (QDs) are produced by simultaneously injecting cadmium (Cd) and selenium (Se) precursor solutions into a heated growth solution of octadecene in ambient atmosphere. Once combined, Se and Cd form CdSe clusters that become continually growing QDs as the reaction progresses.
Are cadmium selenide quantum dots semiconductors?
Quantum dots (QD’s) are nanoparticles of semiconductor materials ranging from 2 nm to 10 nm in diameter. Like CdSe, their electronic characterizations are closely related to the size and shape of the individual crystal.
Is cadmium selenide soluble in water?
These TOPO groups make parts of the CdSe surface hydrophobic and are likely responsible for the insolubility in water.