Patent ID: 8828478

Claim:
A series of monodisperse samples of nanocrystals comprising: a first monodisperse sample of nanocrystals, wherein each nanocrystal of the first monodisperse sample of nanocrystals includes a core including a first semiconductor material and a shell including a second semiconductor material; wherein the first semiconductor material is different from the second semiconductor material; wherein the first monodisperse sample of nanocrystals has a wavelength of peak photoluminescence, and a photoluminescence quantum yield of greater than about 30%; a second monodisperse sample of nanocrystals, wherein each nanocrystal of the second monodisperse sample of nanocrystals includes a core including a third semiconductor material and a shell including a fourth semiconductor material; wherein the third semiconductor material is different from the fourth semiconductor material; wherein the second monodisperse sample of nanocrystals has a wavelength of peak photoluminescence and a photoluminescence quantum yield of greater than about 15%; wherein the wavelength of peak photoluminescence of the first monodisperse sample of nanocrystals is different from the wavelength of peak photoluminescence of the second monodisperse sample of nanocrystals.