A light-emitting device comprising a population of quantum dots (QDs) embedded in a host matrix and a primary light source which causes the QDs to emit secondary light and a method of making such a device. The size distribution of the QDs is chosen to allow light of a particular color to be emitted therefrom....http://www.google.ca/patents/US7264527?utm_source=gb-gplus-sharePatent US7264527 - Quantum dot white and colored light-emitting devices