Ceramic-based thin-film blue LEDs with high operation voltage and unsaturated output power at 1800W/cm2

Meng Lun Tsai, Kun Yu Lai

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

III-nitride blue (λ = 450 nm) LEDs were fabricated on ceramic substrates using thin-film and high-voltage processes. The device, comprising sixteen cascaded sub-LEDs, exhibits excellent current spreading and thermal resilience. Under the driving power of 1800W/cm2 (J = 450 A/cm 2), the high-voltage thin-film LED delivers unsaturated output power and alleviated efficiency droop, which is not achievable with devices fabricated on Si or sapphire substrates with identical epitaxial structure.

Original languageEnglish
Article number022103
JournalApplied Physics Express
Volume7
Issue number2
DOIs
StatePublished - Feb 2014

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