Paper
15 February 2008 ZnO cone-shaped blue light emitting diodes
A. Murai, D. B. Thompson, U. K. Mishra, S. Nakamura, S. P. DenBaars
Author Affiliations +
Abstract
We report on ZnO wafer bonded III-nitride light emitting diodes (LEDs). ZnO wafer was selectively etched to form a hexagonal pyramid shape. For enhancing light extraction and heat conductivity, two types of LED structures were demonstrated: one is having patterned GaN at the wafer bonded interface between GaN and ZnO, the other is the LED having no sapphire. The experimental results of electrical and optical characteristics indicate the high potential of these types of LEDs for solid state lighting sources.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
A. Murai, D. B. Thompson, U. K. Mishra, S. Nakamura, and S. P. DenBaars "ZnO cone-shaped blue light emitting diodes", Proc. SPIE 6895, Zinc Oxide Materials and Devices III, 68950N (15 February 2008); https://doi.org/10.1117/12.778558
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CITATIONS
Cited by 3 patents.
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KEYWORDS
Light emitting diodes

Zinc oxide

Sapphire

Semiconducting wafers

Gallium nitride

Blue light emitting diodes

External quantum efficiency

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