Trends in Miniaturization .....worth another look imo
Jan 2015
......snippets below
http://www.photonics.com/Article.aspx?AID=57095
As for miniaturization, one possibility would be quantum dots sitting atop a conductive layer , Lamstein noted. Instead of working via photoluminescence, as all current quantum dot sources do, these devices would excite emission through electroluminescence. A key advantage would possibly be higher efficiency, as there would not be a multistep “electron to photon to downshifted photon” process by which the light is produced .
Such a device is an industry goal, according to Lamstein. Pulling it off would require creating a conductive and quantum dot layer such that electrons could be efficiently injected from the first to the second while keeping each intact. The quantum dot itself would need to be carefully crafted so that it would have a long life without developing surface defects and without the matrix developing heat-related color change .
“An electroluminescent device would be brighter, smaller, more efficient with less heat generated, less expensive to manufacture and open to many form factors. We think we have the material for it ,” Lamstein said.
QD Vision has a process that reduces the amount of quantum dots used, cutting it by 90 to 99 percent as compared to other implementations. In these alternative configurations, the quantum dots are applied as a film that covers the entire device surface. In QD Vision’s approach, the quantum dots are in what can be thought of as a straw sitting at the side of the device. This approach is possible because the company’s material can withstand higher temperatures and photon fluxes.
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QMC: so much to Look Forward To
Jan 2015
......snippets below
http://www.photonics.com/Article.aspx?AID=57095
As for miniaturization, one possibility would be quantum dots sitting atop a conductive layer , Lamstein noted. Instead of working via photoluminescence, as all current quantum dot sources do, these devices would excite emission through electroluminescence. A key advantage would possibly be higher efficiency, as there would not be a multistep “electron to photon to downshifted photon” process by which the light is produced .
Such a device is an industry goal, according to Lamstein. Pulling it off would require creating a conductive and quantum dot layer such that electrons could be efficiently injected from the first to the second while keeping each intact. The quantum dot itself would need to be carefully crafted so that it would have a long life without developing surface defects and without the matrix developing heat-related color change .
“An electroluminescent device would be brighter, smaller, more efficient with less heat generated, less expensive to manufacture and open to many form factors. We think we have the material for it ,” Lamstein said.
QD Vision has a process that reduces the amount of quantum dots used, cutting it by 90 to 99 percent as compared to other implementations. In these alternative configurations, the quantum dots are applied as a film that covers the entire device surface. In QD Vision’s approach, the quantum dots are in what can be thought of as a straw sitting at the side of the device. This approach is possible because the company’s material can withstand higher temperatures and photon fluxes.
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QMC: so much to Look Forward To
