Predicting solutions toward improved high power white LED light sources: A combined theoretical and experimental study

Proceedings of SPIE - The International Society for Optical Engineering

Volumn 7103, Issue , 2008, Pages

  Sommer, C ^a   Wenzl, F P ^a   Kuna, L ^a   Zinterl, E ^a   Krenn, J R ^a   Hartmann, P ^b   Pachler, P ^b   Schweighart, M ^b   Tasch, S ^b  

^a JOANNEUM RESEARCH   (Austria)

^b TridonicAtco GmbH & Co KG   (Austria)

Author keywords

Conformal coating; Ray tracing; White LED

Indexed keywords

CHEMICAL ANALYSIS; LIGHT EMISSION; LIGHT SOURCES; LIGHTING; LUMINESCENCE; PHOSPHORS; RAY TRACING;

BLUE LEDS; COLOR CONVERSIONS; COLOR UNIFORMITIES; CONFORMAL COATING; COST SAVINGS; DIFFERENT GEOMETRIES; EXPERIMENTAL REALIZATIONS; EXPERIMENTAL STUDIES; HIGH POWER WHITE LEDS; IRRADIANCE DISTRIBUTIONS; LED CHIPS; LIGHTING SYSTEMS; MATERIALS PARAMETERS; MODELING PROCEDURES; OPTICAL SIMULATIONS; OPTIMIZED SOLUTIONS; PHOSPHOR PARTICLES; REAL DEVICES; SCATTERING MODELS; SET-UPS; SIMULATION PROCEDURES; SIMULATION PROCESSES; SIMULATION RESULTS; SPATIAL HOMOGENEITIES; WEIGHT FRACTIONS; WHITE LED; WHITE LEDS; WHITE LIGHT EMITTED;

LIGHT;

EID: 56249134929     PISSN: 0277786X     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.1117/12.797453     Document Type: Conference Paper

References (13)

1. Zheludev N., "The life and times of the LED - a 100 year history", Nature Photon. 1, 189-192 (2007)
2. Nakamura S., Senoh M., Mukai, T., "P-GaN/N-InGaN/N-GaN Double-Heterostructure Blue-Light-Emitting Diodes" Jpn. J. Appl. Phys. 32, L8-L11 (1993)
3. Schubert E. F., Kim J. K., "Solid-state light sources getting smart", Science 308, 1274-1278 (2005)
4. Bergh A. A., "Blue laser diode (LD) and light emitting diode (LED) applications", Phys. Stat. Solidi (a) 201, 2740-2754 (2004)
5. Schubert E. F., Kim J. K., Luo H., Xi J. Q., "Solid-state lighting - A benevolent technology", Rep. Prog. Phys. 69, 3069-3099 (2006)
6. Steranka F. M., Bhat J., Collins D., Cook L., Craford M. G., Fletcher R., Gardner N., Grillot P., Goetz W., Keuper M., Khare R., Kim A., Krames M., Harbers G., Ludowise M., Martin P. S., Misra M., Mueller G., Mueller-Mach R., Rudaz S., Shen Y. C., Steigerwald D., Stockman S., Subramanya S., Trottier T., Wierer J. J., "High power LEDs - Technology status and market applications", Phys. Stat. Sol. (a) 194, 380-388 (2002)
7. Krames M. R., Bhat J., Collins D., Gardner N. F., Götz W., Lowery C. H., Ludowise M., Martin P. S., Mueller G., Mueller-Mach R., Rudaz S., Steigerwald D. A., Stockman S. A., Wierer J. J., "High - power III - nitride emitters for solid - state lighting", Phys. Stat. Sol. (a) 192, 237-245 (2002)
8. Luo H., Kim J. K., Schubert E. F., Cho J., Sone C., Park Y., "Analysis of high-power packages for phosphor-based white LEDs", Appl. Phys. Lett. 86, 243505 (2005)
9. Kim J. K., Luo H., Schubert E. F., Cho J., Sone C., Park Y., "Strongly enhanced phosphor efficiency in GaInN white light-emitting diodes using remote phosphor configuration and diffuse reflector cup", Jpn. J. Appl. Phys. 44, L649-L651 (2005)
10. Narendran N. , Gu Y., Freyssinier-Nova J. P., Zhu Y., "Extracting phosphor scattered photons to improve white LED efficiency", Phys. Stat. Sol. (a) 202, R60-R62 (2005)
11. Sommer C., Wenzl F. P., Hartmann P., Pachler P., Schweighart M., Tasch S., Leising G., , "Tailoring of the Color Conversion Elements in Phosphor-Converted High-Power LEDs by Optical Simulations", IEEE Photon. Technol. Lett. 20, 739-741 (2008)
12. Sommer C., Wenzl F. P., Krenn J. R., Hartmann P., Pachler P., Schweighart M., Tasch S., Leising G., submitted
13. Ota K., Hirano A., Ota A., Tasch S., Pachler P., Roth G., Tews W., WKempfert W., Starick D., "Light emitting device having phosphor of alkaline earth metal silicate", US Patent 6,943,380; EP Application EP1347517A1