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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 4 — Feb. 25, 2013
  • pp: 5071–5073

A complementary study to “Toward scatter-free phosphors in white phosphor-converted light-emitting diodes:” comment

Run Hu, Xing Fu, Yong Zou, and Xiaobing Luo  »View Author Affiliations

Optics Express, Vol. 21, Issue 4, pp. 5071-5073 (2013)

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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.

© 2013 OSA

OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(290.0290) Scattering : Scattering
(290.4020) Scattering : Mie theory

ToC Category:
Optical Devices

Original Manuscript: August 17, 2012
Revised Manuscript: October 16, 2012
Manuscript Accepted: November 16, 2012
Published: February 21, 2013

Run Hu, Xing Fu, Yong Zou, and Xiaobing Luo, "A complementary study to “Toward scatter-free phosphors in white phosphor-converted light-emitting diodes:” comment," Opt. Express 21, 5071-5073 (2013)

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  1. H. K. Park, J. H. Oh, and Y. R. Do, “Toward scatter-free phosphors in white phosphor-converted light-emitting diodes,” Opt. Express20(9), 10218–10228 (2012). [CrossRef] [PubMed]
  2. C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, and F. P. Wenzl, “The effect of the phosphor particle sizes on the angular homogeneity of phosphor-converted high-power white LED light sources,” IEEE J. Sel. Top. Quantum Electron.15(4), 1181–1188 (2009). [CrossRef]
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  4. R. Hu, X. B. Luo, H. Zheng, and S. Liu, “Optical constants study of YAG:Ce phosphor layer blended with SiO2 particle by Mie theory for white light-emitting diode package,” Front. Optoelectron.5(2), 138–146 (2012).
  5. Z. Y. Liu, S. Liu, K. Wang, and X. B. Luo, “Measurement and numerical studies of optical properties of YAG:Ce phosphor for white light-emitting diode packaging,” Appl. Opt.49(2), 247–257 (2010). [CrossRef] [PubMed]
  6. R. Hu, X. B. Luo, and S. Liu, “Study on the optical properties of conformal coating light-emitting diode by Monte Carlo simulation,” IEEE Photon. Technol. Lett.23(22), 1673–1675 (2011). [CrossRef]
  7. R. Hu, X. B. Luo, H. Zheng, Z. Qin, Z. Q. Gan, B. L. Wu, and S. Liu, “Design of a novel freeform lens for LED uniform illumination and conformal phosphor coating,” Opt. Express20(13), 13727–13737 (2012). [CrossRef] [PubMed]
  8. R. Hu, X. B. Luo, H. Feng, and S. Liu, “Effect of phosphor settling on the optical performance of phosphor-converted white light-emitting diodes,” J. Lumin.132(5), 1252–1256 (2012). [CrossRef]
  9. R. Hu, X. Luo, and H. Zheng, “Hotspot location shift in the high-power phosphor-converted white light-emitting diode packages,” Jpn. J. Appl. Phys.51, 09MK05 (2012). [CrossRef]

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