NASA NTRS · 19980038163
Increased Efficiency LED
Abstract
In an LED a large portion of the light produced is lost due to total internal reflection at the air-semiconductor interface. A reverse taper of the semiconductor is used to change the angle at which light strikes the interface so that a greater portion of the light is transmitted.
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Egalon, Claudio O., Rogowski, Robert S.. 1998-01-06. Increased Efficiency LED. https://ntrs.nasa.gov/citations/19980038163
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