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Modern Applications
editCharge Trapping Using Chalcogenmetalates
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In 2012, Leone used Chalcogenidometalates to carry out fluorescence intermittency and excited state decay measurements on a single Quantum dot. This is used to study the charge trapping sites in the quantum dot. Leone used organic and inorganic Ligand to trap charge on the surface of the quantum dot. Chalcogenidometalates, Group 6 and metal compounds, are known for their rich coordination chemistry and their semiconducting behavior. Chalcognidomentalates are used as “capping ligiands” on top of nano crystals. [1]
The trapped charges are applicable to a wide array of fields such as computer data storage. In conventional computer storage (MOSFET) the trapping layer is a conductor. But in Lenoe’s process the trapping layer is an insulator. This provides a benefit when there is a heavy read or write load during data transmission. Another application of nanocrystals capped with Chalcogenidometalates are photo sensors that have sensitivity greater than 1013 cm·Hz1/2/W. [1]
Hole Transfers For Energy Conversion and Storage
editIn 2015, Leone studied hole transfer rates from high photoluminescence semiconductor quantum dots to covalently Hole acceptors. He demonstrated that high intrinsic quantum dots could transfer holes with high efficiency[2]. Until recently, transferring charge from quantum dots to molecular acceptors proved inefficient. The quantum dot would lose the charge because of ill-defined “trap states” [2]. Leone isolated these unwanted trap states by growing a shell of larger band gap material around the quantum dot. If this efficiency can be maintained, quantum dots hole applications is areas such as solar cells. Quantum dots act as light absorbers for solar cells where the photoexcited charges in the quantum dot are transferred to other species as a form of energy conversion and storage. [2].
Hi. Your article could use some organization. The information that is presented seems to jump from topic to topic without any context. There are also quite a number of typos that need to be proofread more carefully. When you cite your sources, make sure to use the proper Wikipedia reference format and only cite once at the end of the information you retrieved from another source. There are some parts in your article that you could link to other Wikipedia articles. Overall, the information is interesting; I think you did a great job at mentioning potential applications of the papers you read, but there are some things you mention that could include more detail. Idychang (talk) 23:15, 19 November 2016 (UTC)
- ^ a b Lenone, Stephen R.; Cordones, Amy A.; Scheele, Marcus; Alivisatos, Paul (2012). "Probing the Interaction of Single Nanocrystals with Inorganic Capping LIgands: Time-Resolved Fluorescence from CdSe-Cds Quantum Dots Capped with Chalcogenidometalates". Journal of the American Chemical Society.
- ^ a b c Ding, Tina X.; Olshansky, Jacob H.; Leone, Stephen R.; Alivisatos, Paul A. (2015). "Efficiency of Hole Transfer from Photoexcited Quantum Dots to Covalently Linked Molecular Species". Journal of the American Chemical Society.