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Demonstration of high efficiency cascaded blue and green micro-light-emitting diodes with independent junction control

Applied Physics Letters, ISSN: 0003-6951, Vol: 118, Issue: 26
2021
  • 21
    Citations
  • 0
    Usage
  • 13
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    21
    • Citation Indexes
      20
    • Patent Family Citations
      1
      • Patent Families
        1
  • Captures
    13

Article Description

We demonstrate efficient cascaded blue/green micro-size light-emitting diodes (μLEDs) with independent junction control. The cascaded μLEDs, consisted of blue μLEDs, a tunnel junction, and green μLEDs, were fully grown by metalorganic chemical vapor deposition. Blue, green, and blue/green emissions can be independently controlled in the same device. The blue μLEDs (60 × 60 μm) and green μLEDs (40 × 40 μm) exhibit a forward voltage of 4.1 and 3.1 V at 20 A/cm and a high peak external quantum efficiency of 42% and 14%, respectively. This demonstration paves the way for monolithic integration of full color cascaded μLEDs.

Bibliographic Details

Panpan Li; Hongjian Li; Yifan Yao; Cheyenne Lynsky; Kai Shek Qwah; James S. Speck; Shuji Nakamura; Steven P. DenBaars; Haojun Zhang

AIP Publishing

Physics and Astronomy

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