Journal
APPLIED PHYSICS EXPRESS
Volume 16, Issue 6, Pages -Publisher
IOP Publishing Ltd
DOI: 10.35848/1882-0786/acd1cf
Keywords
RED LED; micro-size; display
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This article presents high-performance 10 x 10 μm InGaN amber micro-size LEDs. At 15 A cm(-2), the InGaN micro LEDs exhibit a single emission peak at 601 nm. The peak external quantum efficiency (EQE) and wall-plug efficiency are 5.5% and 3.2%, respectively. Compared to the 100 x 100 μm InGaN red micro LEDs, the 10 x 10 μm InGaN red micro LEDs maintain a similar EQE value with the same efficiency droop. These results highlight the higher efficiency potential of InGaN materials compared to common AlInGaP materials for the ultra-small size red micro LEDs required by augmented reality and virtual reality displays.
We demonstrate high-performance 10 x 10 mu m(2) InGaN amber micro-size LEDs (mu LEDs). At 15 A cm(-2), the InGaN mu LEDs show a single emission peak located at 601 nm. The peak external quantum efficiency (EQE) and wall-plug efficiency are 5.5% and 3.2%, respectively. Compared to the 100 x 100 mu m(2) mu LEDs, the 10 x 10 mu m(2) InGaN red mu LEDs maintain a similar EQE value with the same efficiency droop. These results point out that InGaN materials are much more promising for higher efficiency than the common AlInGaP materials for the ultra-small size red mu LEDs required by augmented reality and virtual reality displays.
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