title: Optical enhancement brought by doping Gd(3+) ions into Ce: YAG ceramics for indoor white light-emitting diodes.
abstract: We dope Gd(3+) ions into Ce: YAG ceramics to induce red-shift in the photoluminescence, of which the degree is proportional to the Gd(3+) doping concentration. This kind of ceramic, when collaborating with InGaN blue chips, proves to be a promising fluorescent material of white light-emitting diodes, for not only its high in-line transmittance and decent quantum yield, but also the improvement in color rendering ability brought by the red-shift, which enhances the ratio of red portion in spectra. We demonstrate that 10% is the optimized value of Gd(3+) doping concentration, as it provides the maximum color rendering index of ~78 with luminous efficiency as high as 128 lm/W.
authors.forename: Jian
authors.initials: J
authors.lastname: Chen
authors.forename: Zhonghua
authors.initials: Z
authors.lastname: Deng
authors.forename: Zhuguang
authors.initials: Z
authors.lastname: Liu
authors.forename: Yue
authors.initials: Y
authors.lastname: Lin
authors.forename: Hai
authors.initials: H
authors.lastname: Lan
authors.forename: Dongchuan
authors.initials: D
authors.lastname: Chen
authors.forename: Binjie
authors.initials: B
authors.lastname: Fei
authors.forename: Chong
authors.initials: C
authors.lastname: Wang
authors.forename: Fangyu
authors.initials: F
authors.lastname: Wang
authors.forename: Qianqian
authors.initials: Q
authors.lastname: Hu
authors.forename: Yongge
authors.initials: Y
authors.lastname: Cao