Nonpolar m-Plane Blue-Light-Emitting Diode Lamps with Output Power of 23.5 mW under Pulsed Operation
- 1 February 2006
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 45 (2R) , 739
- https://doi.org/10.1143/jjap.45.739
Abstract
We report on the DC and pulsed performance of nonpolar m-plane InGaN/GaN multiple-quantum-well light-emitting diode (LED) lamps. LED structures were grown on free-standing m-plane GaN substrates by metalorganic chemical vapor deposition. LEDs with an area of 300×300 µm2 were packaged into conventional epoxy-encapsulated lamps. The emission wavelength of the LEDs was 452 nm. A CW output power as high as 0.6 mW was achieved at a drive current of 20 mA, corresponding to an external quantum efficiency of 1.09%. Pulsed power measurement on the lamps yielded an output power of 23.5 mW at a drive current of 1 A for a duty cycle of 0.25%.Keywords
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