Research Progress of Green Phosphor for White Light Emitting Diodes

White light emitting diodes(WLED) are described as the fourth generation illuminate lamps,which have remarkable energy conservation prospect and huge market.The solid-state lighting is mainly based on phosphor luminescence conversion of white LEDs.Research and development of three primary color luminous powder for NUV-white light emitting diodes is of great significance.The new research progress on green phosphors for white light emit-ting diodes all over the world in recent years is reviewed.The phosphors with high luminous efficiency,high color rendering index(CRI),low color correlating temperature(CCT) or good color coordinates are emphasized.And the trend of development of green phosphors WLED performances is also presented.