Application of strontium silicate yellow phosphor for white light-emitting diodes

Application of strontium silicate yellow phosphor for white light-emitting diodes

In order to develop a yellow phosphor that emits efficiently under the 450–470 nm excitation range, we have synthesized a Eu2+-activated Sr3SiO5 yellow phosphor and attempted to develop white light-emitting diodes (LEDs) by combining them with a InGaN blue LED chip (460 nm). Two distinct emission ba...

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Veröffentlicht in:Applied physics letters 2004-03, Vol.84 (10), p.1647-1649
Hauptverfasser: Park, Joung Kyu, Kim, Chang Hae, Park, Seung Hyok, Park, Hee Dong, Choi, Se Young
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container_issue 10
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container_title Applied physics letters
container_volume 84
creator Park, Joung Kyu
Kim, Chang Hae
Park, Seung Hyok
Park, Hee Dong
Choi, Se Young
description In order to develop a yellow phosphor that emits efficiently under the 450–470 nm excitation range, we have synthesized a Eu2+-activated Sr3SiO5 yellow phosphor and attempted to develop white light-emitting diodes (LEDs) by combining them with a InGaN blue LED chip (460 nm). Two distinct emission bands from the InGaN-based LED and the Sr3SiO5:Eu phosphor are clearly observed at 460 nm and at 570 nm, respectively. These two emission bands combine to give a spectrum that appears white to the naked eye. Our results showed that InGaN (460 nm chip)-based Sr3SiO5:Eu exhibits a better luminous efficiency than that of the industrially available product InGaN (460 nm chip)-based YAG:Ce.
doi_str_mv 10.1063/1.1667620
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title Application of strontium silicate yellow phosphor for white light-emitting diodes
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