LEDs – An overview of the state of the art in technology and application
Stephen Johnson, Lawrence Berkeley National Laboratory, USAKeywords
light source, energy efficient lighting, solid state lighting, light emitting diodes, LEDs, GaN, GaAs/GaPAbstract
Solid state lighting in the form of Light Emitting Diodes (LEDs) is bring new sources with different operating characteristics to the market. With the control in dimension, optics, intensity and color, these sources have the potential to transform the way we use light. This paper will review the recent improvements in performance that have been achieved by these devices, focusing on those product attributes identified as being critical to end users. The paper will conclude with a consideration of applications capitalizing on the LEDs’ unique operating and physical properties.
Paper
Download this paper as pdf: RL5_Johnson.pdf.
Panels of the conference:
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Session 3. Public lighting: 1
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Session 4. Lighting programmes around the world: 1
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Session 5. Public lighting: 2
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Session 6. Human factors and evaluation
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Session 7. Efficient domestic lighting: design and marketing
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Session 8. Implementing quality and efficiency
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Session 9. GEF/IFC Efficient Lighting Initiative (ELI)
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Session 10. Lighting programmes around the world: 2
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Session 11. Quality and efficiency applications
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Session 12. Standards and technology
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Session 13. Lighting and energy demand
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Session 14. Dynamic lighting. Electric and daylight
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Session 15. Wrap-up Plenary session
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Poster Session