Variable-color light-emitting diodes using GaN microdonut arrays.
basic_science · Level V
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- Record sourced from PubMed, PMID 24677202.
- Also identified by DOI 10.1002/adma.201305684.
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Abstract
Microdonut-shaped GaN/Inx Ga1-x N light-emitting diode (LED) microarrays are fabricated for variable-color emitters. The figure shows clearly donut-shaped light emission from all the individual microdonut LEDs. Furthermore, microdonut LEDs exhibit spatially-resolved blue and green EL colors, which can be tuned by either controlling the external bias voltage or changing the size of the microdonut LED.