Plessey makes first GaN-on-Si Red LED

Plessey has developed the world’s first GaN on Silicon-based Red LED. Whilst InGaN-based Blue and Green LEDs are commercially available, Red LEDs are typically based on AlInGaP material or colour converted Red. For AR, achieving high efficiency ultra-fine pitch Red pixels (< 5 µm) remains elusive due to severe edge effects from AlInGaP material and ...

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