Green light-excitable Ce-doped nitridomagnesoaluminate Sr[Mg2Al2N4] phosphor for white light-emitting diodes

Julius Leaño, Jr., Shing-Ying Lin, Agata Lazarowska, Sebastian Mahlik, Marek Grinberg, Chaolun Liang, Wuzong Zhou, Maxim Molokeev, Victor Atuchin, Yi-Ting Tsai, Chun Che Lin, Hwo-Shuenn Sheu, Ru-Shi Liu

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Abstract

A Ce3+-doped nitrodoagnesoaluminate Sr[Mg2Al2N4] phosphor was prepared from all-nitride precur- sors using gas pressure sintering method. The effective excitation by green light (510 nm) that revealed a broad emission from 550-650 nm prompted an innovation in the assembly of the pc-LED by using a blue chip LED that is sequentially coated with a green-emitting phosphor (β-SiAlON:Eu2+) that excites the upper Sr[Mg2Al2N4]:Ce3+ layer thereby producing white light. The use of this broadband emitting phosphor and the innovative configuration generates white light and puts forward two promising innovations for pc-LEDs.
Original languageEnglish
Pages (from-to)6822–6825
JournalChemistry of Materials
Volume28
Issue number19
Early online date25 Sept 2016
DOIs
Publication statusPublished - 11 Oct 2016

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