High-efficiency, microscale GaN light-emitting diodes and their thermal properties on unusual substrates
Tae-il Kim1, Yei Hwan Jung, Jizhou Song
1Department of Materials Science and Engineering, Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
Small (Weinheim an Der Bergstrasse, Germany)
|April 3, 2012
Abstract:
A method for forming efficient, ultrathin GaN light-emitting diodes (LEDs) and for their assembly onto foreign substances is reported. The LEDs have lateral dimensions ranging from ~1 mm × 1 mm to ~25 μm × 25 μm. Quantitative experimental and theoretical studies show the benefits of small device geometry on thermal management, for both continuous and pulsed-mode operation, the latter of which suggests the potential use of these technologies in bio-integrated contexts.
