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Yellow‐Emitting Y 3 Si 6 N 11 : Ce 3+ Phosphors for White Light–Emitting Diodes ( LED s)
Author(s) -
Liu Lihong,
Xie RongJun,
Li Wanyuan,
Hirosaki Naoto,
Yamamoto Yoshinobu,
Sun Xudong
Publication year - 2013
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.12357
Subject(s) - phosphor , chemistry , photoluminescence , analytical chemistry (journal) , materials science , optoelectronics , chromatography
A novel Y 3− x Si 6 N 11 : x Ce 3+ yellow phosphor was synthesized using the carbothermal reduction and nitridition method at 1550°C for 16 h in this letter. Photoluminescence spectra indicated that the phosphor showed broad excitation spectrum and had strong absorption in range of 350–450 nm. It also gave a broad emission band (Full width at half maximum = 153 nm) centered at 575 nm under 425‐nm excitation. With increasing Ce 3+ concentration, the strongest emission intensity was obtained at 5 mol% Ce 3+ doping amount and a systematic redshift was observed as the Ce 3+ concentration increased. The results indicate that this novel yellow phosphor is a promising candidate for using in blue‐chip‐excited white light–emitting diodes ( LED s).