title: A complementary study to "toward scatter-free phosphors in white phosphor-converted light-emitting diodes:" comment.
abstract: In a recent paper, Park et al. [Opt. Express 20(9), 10218 (2012)] demonstrated that large micro-size cube phosphors are an outstanding potential candidate for scatter-free phosphors in white phosphor-converted light-emitting diodes (pc-LEDs). They found that large micro-size cube phosphors can lead to higher luminous efficiency (LE), higher packaging efficiency (PE), and reduced influences of ambient temperature and applied current. In this comment, we further discussed the large micro-size phosphors on the angular color uniformity (ACU). It is found that when the phosphor particle size increases from 30 μm to 100 μm, the ACU decreases from 0.91 to 0.86.
authors.affiliation: Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Run
authors.initials: R
authors.lastname: Hu
authors.forename: Xing
authors.initials: X
authors.lastname: Fu
authors.forename: Yong
authors.initials: Y
authors.lastname: Zou
authors.forename: Xiaobing
authors.initials: X
authors.lastname: Luo
mesh_terms: D003116:Color; D008029:Lighting / Q000295:instrumentation*; D012666:Semiconductors