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260 nm Pseudomorphic Ultraviolet Light Emitting Diodes with Enhanced Photon Extraction Efficiency

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Abstract

We designed and fabricated 260 nm ultraviolet LEDs which demonstrated 20mW with greater than 1.5% WPE. Through surface roughening, substrate thinning and encapsulation, a 6× improvement in photon extraction efficiency has been achieved.

© 2012 Optical Society of America

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