White LED Incorporates Quantum Dots
Quantum dots are nanometer-scale semiconductors that act as a potential well for electrons. They exhibit a broad absorption and relatively narrow emission spectrum, with a peak wavelength that is defined by their dimensions. By capping polyhedral ZnSe quantum dots with a blend of organic molecules, researchers at the Industrial Technology Research Institute in Hsinchu, Taiwan, have created an emitter based on quantum dots that produce white light when assembled in a layer above an InGaN...
Photonics Spectra, June 2005