Patent ID: 8287761
Filing Date: 2012-10-16
Classification: B82Y,C01P,C09C,C09K,H01L,Y10S,Y10T

Abstract:
1. A method for making a population of stable luminescent semiconductor nanocrystals N XAB composed of X, A, and B, wherein X is Cd, A is Se, and B is Te, said population of N XAB nanocrystals having a peak emission wavelength longer than that of a population of N XA nanocrystals composed of X and A and longer than that of a population of nanocrystals N XB composed of X and B, wherein N XA , N XB , and N XAB are identically sized, the method comprising: combining B with X and A in an amount such that the molar ratio B:(A+B) is in the range of approximately 0.01 to 0.10 and the molar ratio X:(A+B) is in the range of approximately 0.5:1.0 to 2:1, under reaction conditions effective to provide said population of stable luminescent semiconductor N depositing a protective, passivating overlayer on N