Enhancing the light extraction efficiency of AlInN nanowire ultraviolet light-emitting diodes with photonic crystal structures

In this paper, AlInN nanowire ultraviolet light-emitting diodes (LEDs) with emission at ∼299 nm have been successfully demonstrated. We have further studied the light extraction properties of these nanowire LEDs using photonic crystal structures with square and hexagonal lattices of nanowires. The l...

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Veröffentlicht in:Optics express 2020-07, Vol.28 (15), p.22908-22918
Hauptverfasser: Jain, Barsha, Velpula, Ravi Teja, Tumuna, Moses, Bui, Ha Quoc Thang, Jude, Jeffrey, Pham, Thi Tan, le, Thang van, Hoang, Anh Viet, Wang, Renjie, Nguyen, Hieu Pham Trung
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Sprache:eng
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Zusammenfassung:In this paper, AlInN nanowire ultraviolet light-emitting diodes (LEDs) with emission at ∼299 nm have been successfully demonstrated. We have further studied the light extraction properties of these nanowire LEDs using photonic crystal structures with square and hexagonal lattices of nanowires. The light extraction efficiency (LEE) of the periodic nanowire LED arrays was found to be significantly increased as compared to random nanowire LEDs. The LEEs reach ∼ 56%, and ∼ 63% for the square and hexagonal photonic crystal-based nanowire structures, respectively. Moreover, highly transverse-magnetic polarized emission was observed with dominant vertical light emission for the AlInN nanowire ultraviolet LEDs.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.396788