Demonstration of high power blue-green light emitting diode on semipolar (112̄2) bulk GaN substrate

H. Zhong, A. Tyagi, N. N. Fellows, R. B. Chung, M. Saito, K. Fujito, J. S. Speck, S. P. Denbaars, S. Nakamura

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

Blue-green InGaN/GaN multiple-quantum-well light emitting diodes with peak emission wavelength of 480nm were grown on low extended defect density semipolar (112̄2) bulk GaN substrates by conventional metal organic chemical vapour deposition. The calculated external quantum efficiency and output power at a drive current of 20mA under pulsed operations (10 duty cycle) were 18 and 9mW, respectively. The device exhibited small electroluminescence wavelength shift (4.5nm) with drive currents ranging from 30 to 100mA, indicating significant reduction of polarisation-related internal electric fields.

Original languageEnglish
Pages (from-to)825-827
Number of pages3
JournalElectronics Letters
Volume43
Issue number15
DOIs
StatePublished - 2007

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