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High-density matrix-addressable AlInGaN-based 368-nm microarray light-emitting diodes

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4 Author(s)
Chan-Wook Jeon ; Inst. of Photonics, Strathclyde Univ., Glasgow, UK ; Hoi Wai Choi ; Gu, E. ; Dawson, M.D.

We report on the fabrication of ultraviolet (UV) microarray light-emitting diodes, toward applications including mask-free photolithographic exposure. Devices with 64 × 64 elements have been fabricated in matrix-addressed format, generating directed output powers of up to 1 μW per 20-μm-diameter element at less than 1.0-mA drive current. The resistance of each elemental device was found to depend strongly on the n-GaN stripe length. The center wavelength of the emission was measured to be 368 nm, which is very close to that of an i-line (365 nm) UV light source. To our knowledge, this is the first report detailing the fabrication and performance of such devices operating in the UV.

Published in:

Photonics Technology Letters, IEEE  (Volume:16 ,  Issue: 11 )