Los Alamos, New Mexico and Sandia Labs scientists create the first all-inorganic nanocrystal structure LED. This device will be cadmium selenide (CdSe) nanocrystals and GaN (GaN) based light emitting region together, the use of phosphorus into the blue light emitting yellow light, to avoid the current problem of low efficiency of most of the LED.
Semiconductor nanocrystals offer high quantum efficiency, but the LED technology has been plagued by a problem that can not be a direct electrical connection nanocrystals. The solution is caught in the quantum dots between GaN injection layers, the project leader Victor Klimov explains. U.S. scientists is to use the internal layer pin structure, which uses a cadmium selenide core and a ZnS nanocrystals surrounded by the cladding. The researchers have produced a lot of LED, including 573nm and 619nm of the transmitter, the nano-crystalline core diameter 3.6nm and 5.2nm.
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