Highly reliable nitride-based LEDs with SPS+ITO upper contacts

2003132 citationsJournal Article

Authors

Shoou‐Jinn Chang · National Cheng Kung University

Chao Chang · National Cheng Kung University

Y.K. Su · National Cheng Kung University

Ricky W. Chuang · National Cheng Kung University

Y. C. Lin · National Cheng Kung University

Shih‐Chang Shei · Delta Electronics (Taiwan)

H. M. Lo ·

Abstract

Nitride-based blue light emitting diodes (LEDs) with an n/sup +/-short period superlattice (SPS) tunnel contact layer and an indium tin oxide (ITO) transparent contact were fabricated. Compared with conventional nitride-based LEDs with Ni/Au upper contacts, it was found that we could achieve a 60% increase in electroluminescence (EL) intensity by using ITO upper contacts. However, it was also found that the lifetime of ITO LEDs were much shorter. Furthermore, it was found that we could achieve a longer lifetime and a smaller reverse leakage current (I/sub R/) by the deposition of a SiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> layer on top of the ITO LEDs.

Topics & Keywords

GaN-based semiconductor devices and materials Semiconductor Quantum Structures and Devices Semiconductor materials and devices

Publication Details

Published in: IEEE Journal of Quantum Electronics

Volume 39, Issue 11, pp. 1439-1443

DOI: 10.1109/jqe.2003.818312

Field-Weighted Citation Impact: 8.76

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Highly reliable nitride-based LEDs with SPS+ITO upper contacts

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Abstract

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Publication Details