Modelling Fluorescent Materials with a Spectral Overlap between Excitation and Emission Spectrum

Sven Leyre, Martijn Withouck, Guy Durinck, Geert Deconinck, Peter Hanselaer

2014

Abstract

The adding-doubling method can be used to determine the reflection and transmission characteristics of fluorescent materials. In this work, the method was adapted to allow the implementation of fluorescent particles with a significant overlap between excitation and emission spectrum. The proposed method was validated by comparing its results to the simulation results of traditional Monte Carlo ray tracing. The average difference over the visible wavelength range between the two methods was found to be smaller than 0.5%. The proposed adding-doubling method was adapted for the simulation of a blue light-emitting diode with a remote phosphor converter containing YAG:Ce phosphor. It was shown that it is important to take the spectral overlap between excitation and emission spectrum into account to determine the colour characteristics with sufficient accuracy.

References

  1. Dhami, S., de Mello, A. J., Rumbles, G., Bishop, S. M., Phillips, D., Beeby, A. (1995). Phthalocyanine fluorescence at high concentration: dimers or reabsorption effect? Photochem. Photobiol. 61 (4), 341-346.
  2. European Commission (2012). Commission Regulation (EU) No 1194/2012 of 12 December 2012 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for directional lamps, light emitting diode lamps and related equipment. Brussels, Official Journal of the European Union.
  3. Hansen, J. E. (1969). Radiative transfer by doubling very thin layers. Astrophys. J. 155, 563-573.
  4. Henyey, L. G., Greenstein, J. L. (1941). Diffuse radiation in the galaxy. Astrophys. J. 93, 70-83.
  5. Joseph, J. H., Wiscombe, W. J. (1976). The DeltaEddington Approximation for Radiative Flux Transfer. J. Atmos. Sci. 33, 2452-2459.
  6. Lee K. H., Lee, S. W. R. (2006). Process development for yellow phosphor coating on blue light-emitting diodes (LEDs) for white light illumination. 8th Electronics Packaging Technology Conference, Singapore, 6-8 December.
  7. Leyre, S., Durinck, G., Van Giel, B., Saeys, W., Hofkens, J., Deconinck, G., Hanselaer, P. (2012). Extended adding-doubling method for fluorescent applications. Opt. Express 20 (16), 17856-17872.
  8. Liu, Z., Liu, S., Wang, K., Luo, X. (2010). Measurement and numerical studies of optical properties of YAG:Ce phosphor for white light-emitting diode packaging. Appl. Opt. 49 (2), 247-257.
  9. MacAdam, D. L. (1942). Visual Sensitivities to Color Differences in Daylight. J. Opt. Soc. Am. A 32 (5), 247-274.
  10. Prahl, S. A., van Gemert, M. J. C., Welch, A. J. (1993). Determining the optical properties of turbid media by using the adding-doubling method. Appl. Opt. 32 (4), 559-568.
  11. Saeys, W., Velazco-Roa, M. A., Thennadil, S. N., Ramon, H., Nicolaï, B. M. (2008). Optical properties of apple skin and flesh in the wavelength range from 350 to 2200 nm. Appl. Opt. 47 (7), 908-919.
  12. Stokes, G. G. (1862). On the intensity of the light reflected from or transmitted through a pile of plates. Proc. Roy. Soc. London 11, 545-556.
  13. Wiscombe, W. J. (1976). On initialization, error and flux conservation in the doubling method. J. Quant. Spectrosc. Radiat. Transfer 16, 637-658.
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Paper Citation


in Harvard Style

Leyre S., Withouck M., Durinck G., Deconinck G. and Hanselaer P. (2014). Modelling Fluorescent Materials with a Spectral Overlap between Excitation and Emission Spectrum . In Proceedings of 2nd International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS, ISBN 978-989-758-008-6, pages 33-38. DOI: 10.5220/0004729700330038


in Bibtex Style

@conference{photoptics14,
author={Sven Leyre and Martijn Withouck and Guy Durinck and Geert Deconinck and Peter Hanselaer},
title={Modelling Fluorescent Materials with a Spectral Overlap between Excitation and Emission Spectrum},
booktitle={Proceedings of 2nd International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS,},
year={2014},
pages={33-38},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004729700330038},
isbn={978-989-758-008-6},
}


in EndNote Style

TY - CONF
JO - Proceedings of 2nd International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS,
TI - Modelling Fluorescent Materials with a Spectral Overlap between Excitation and Emission Spectrum
SN - 978-989-758-008-6
AU - Leyre S.
AU - Withouck M.
AU - Durinck G.
AU - Deconinck G.
AU - Hanselaer P.
PY - 2014
SP - 33
EP - 38
DO - 10.5220/0004729700330038