A comprehensive study on the parameters effecting color conversion in phosphor converted white light-emitting diodes

Proceedings of SPIE - The International Society for Optical Engineering

Volumn 7784, Issue , 2010, Pages

  Sommer, C ^a   Wenzl, F P ^a   Reil, F ^a   Krenn, J R ^a   Pachler, P ^b   Tasch, S ^b   Hartmann, P ^a  

^a JOANNEUM RESEARCH   (Austria)

^b LEDON Lighting Jennersdorf GmbH   (Austria)

Author keywords

Ray tracing; White LED

Indexed keywords

BLUE LEDS; COLOR CONVERSIONS; COLOR TEMPERATURES; COMPREHENSIVE STUDIES; DEVICE OPTIMIZATION; EMISSION CHARACTERISTICS; LUMINOUS EFFICACY; MATRIX; MATRIX MATERIALS; PHOSPHOR MATERIALS; PHOSPHOR PARTICLES; PHYSICAL ASPECTS; SCATTERING PROCESS; WHITE LED; WHITE LIGHT EMITTING DIODES;

COLOR; LIGHT EMISSION; LIGHT SCATTERING; LIGHTING; LUMINOUS MATERIALS; PHOSPHORS; RAY TRACING; REFRACTION; REFRACTIVE INDEX; SCATTERING;

LIGHT EMITTING DIODES;

EID: 77958013869     PISSN: 0277786X     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.1117/12.860387     Document Type: Conference Paper

References (13)

1. E. F. Schubert, J. K. Kim, H. Luo, J. Q. Xi, Solid-state lighting - a benevolent technology, Rep. Prog. Phys. 69, . 3069 - 3099, (2006).
2. H. Luo, J. K. Kim, E. F. Schubert, J. Cho, C. Sone, Y. Park, Analysis of high-power packages for phosphor-based white-light-emitting diodes, Appl. Phys. Lett. 86, pp. 243-505, (2005).
3. N. Narendran, Y. Gu, J. P. Freyssinier-Nova, Y. Zhu, Extracting phosphor-scattered photons to improve white LED efficiency, Phys. Stat. Sol. (a) 202, 202, R60 - R62, (2005).
4. Z. Liu, S. Liu, K. Wang, X. Luo, Optical analysis of color distribution in white LEDs with various packaging methods, IEEE Photon. Technol. Lett. 20, 2027 - 2029, (2008).
5. K. Wang, D. Wu, F. Chen, Z. Liu, X. Luo, S. Liu, Angular color uniformity enhancement of white light-emitting diodes integrated with freeform lenses, Opt. Lett. 35, 1860 - 1862, (2010).
6. N. Kimura, K. Sakuma, S. Hirafune, K. Asano, N. Hirosaki, R.- J. Xie, Extrahigh color rendering white light-emitting diode lamps using oxynitride and nitride phosphors excited by blue light-emitting diode, Appl. Phys. Lett. 90, 051109, (2007).
7. N. T. Tran, F. G. Shi, Studies of phosphor concentration and thickness for phosphor-based white light-emittingdiodes, J. Lightwave Technol. 26, 3556 - 3559, (2008).
8. N. T. Tran, J. P. You, F. G. Shi, Effect of phosphor particle size on luminous efficacy of phosphor-converted white LED, J. Lightwave Technol. 27, 5145 - 5150, (2009).
9. C. Sommer, F. P. Wenzl, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, Tailoring of the color conversion elements in phosphor-converted high-power LEDs by optical Simulations, IEEE Photon. Technol. Lett. 20, 739 - 741, (2008).
10. C. Sommer, F.P. Wenzl, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, A detailed study on the requirements for angular homogeneity of phosphor converted high power white LED light sources, Opt. Mater. 31, 837 - 848, (2009).
11. C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, 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, 1181 - 1188, (2009).
12. C. Sommer, F. P. Wenzl, P. Hartmann, P. Pachler, M. Schweighart, G. Leising, S. Tasch, Silicate phosphors and white LED technology - improvements and opportunities, Proc. of SPIE 6669, 66690O, (2007).
13. K. Ota, A. Hirano, A. Ota, S. Tasch, P. Pachler, G. Roth, W. Tews, W. Kempfert, D. Starick, "Light emitting device having phosphor of alkaline earth metal silicate", US Patent 6, 943, 380; EP Application EP1347517A1.