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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 4 — Feb. 1, 2001
  • pp: 533–537

Thermal influences on optical properties of light-emitting diodes: a semiempirical model

Angel García-Botella, Antonio Alvarez Fernández-Balbuena, Daniel Vázquez-Moliní, and Eusebio Bernabeu  »View Author Affiliations


Applied Optics, Vol. 40, Issue 4, pp. 533-537 (2001)
http://dx.doi.org/10.1364/AO.40.000533


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Abstract

The application of LED technology to fields such as alphanumerical displays and traffic control is continuously increasing. Because the technology is used outdoors, it must be able to operate under various environmental conditions. Like all semiconductor devices, LED’s have properties that change with temperature. We propose a semiempirical model, based on semiconductor solid-state theory, that predicts the changes in the emission spectrum including the effect of temperature changes on the optical properties of the LED, within a range appropriate for outdoor applications (0–40 °C). This model permits us to evaluate the changes in the output flux and the chromaticity coordinates of the LED. We checked this model with seven different LED’s.

© 2001 Optical Society of America

OCIS Codes
(120.5240) Instrumentation, measurement, and metrology : Photometry
(120.5630) Instrumentation, measurement, and metrology : Radiometry
(230.3670) Optical devices : Light-emitting diodes
(250.0250) Optoelectronics : Optoelectronics

History
Original Manuscript: June 25, 2000
Revised Manuscript: October 10, 2000
Published: February 1, 2001

Citation
Angel García-Botella, Antonio Alvarez Fernández-Balbuena, Daniel Vázquez-Moliní, and Eusebio Bernabeu, "Thermal influences on optical properties of light-emitting diodes: a semiempirical model," Appl. Opt. 40, 533-537 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-4-533

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