Synthesis and optical properties of red/blue-emitting Sr2MgSi2O7:Eu 3 +/Eu 2+ phosphors for white LED
Title: Synthesis and optical properties of red/blue-emitting Sr2MgSi2O7:Eu 3 +/Eu 2+ phosphors for white LED Authors: Tong, Thi Hao Tam Nguyen, Duy Hung Nguyen, Thi Kim Lien Nguyen, Duc Trung Kien Pham, Thanh Huy Keywords: Sr2MgSi2O7:Eu 3+ /Eu 2+;Red and blue emitting phosphor;Photoluminescence Issue Date: 2016 Publisher: ĐHQGHN Abstract: Phosphor-converted white light emitting diodes (white LEDs) have received great attention in recent years since they have several excellent features such as high lumen output, low power consumption, long lifetime and environmentally friendly. In this work, we report the co-precipitation synthesis of red/blue Sr2MgSi2O7:Eu 3+ /Eu 2+ phosphors with various Eu doping concentration. The results show that the ob-tained Sr2MgSi2O7:Eu 3+ /Eu 2+ phosphors have good crystallinity and emit strong red (Sr2MgSi2O7:Eu 3+ ) and blue (Sr2MgSi2O7:Eu 2+) emissions under near UV light excitation. The sharp emission peaks ...