Droop improvement in high current range on PSS-LEDs

S. Tanaka, Yuji Zhao, I. Koslow, C. C. Pan, H. T. Chen, J. Sonoda, S. P. Denbaars, S. Nakamura

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The droop property of blue GaN light emitting diodes (LEDs) has been improved by creating a 9 quantum well (QW) LED on a patterned sapphire substrate (PSS). The droop ratio was improved from 45.9 to 7.6. At a wavelength of 447nm, and with standard on-header packaging, the 9QW PSS-LED had an output power of 27.6mW and an EQE of 49.7 at a current of 20mA. The output power of the 9QW PSS-LED remains linear with increasing drive current, even up to relatively high current density, and the EQE is almost constant.

Original languageEnglish (US)
Pages (from-to)335-336
Number of pages2
JournalElectronics Letters
Volume47
Issue number5
DOIs
StatePublished - Mar 3 2011
Externally publishedYes

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Sapphire
Light emitting diodes
Substrates
Semiconductor quantum wells
Packaging
Current density
Wavelength

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Tanaka, S., Zhao, Y., Koslow, I., Pan, C. C., Chen, H. T., Sonoda, J., ... Nakamura, S. (2011). Droop improvement in high current range on PSS-LEDs. Electronics Letters, 47(5), 335-336. https://doi.org/10.1049/el.2010.3306

Droop improvement in high current range on PSS-LEDs. / Tanaka, S.; Zhao, Yuji; Koslow, I.; Pan, C. C.; Chen, H. T.; Sonoda, J.; Denbaars, S. P.; Nakamura, S.

In: Electronics Letters, Vol. 47, No. 5, 03.03.2011, p. 335-336.

Research output: Contribution to journalArticle

Tanaka, S, Zhao, Y, Koslow, I, Pan, CC, Chen, HT, Sonoda, J, Denbaars, SP & Nakamura, S 2011, 'Droop improvement in high current range on PSS-LEDs', Electronics Letters, vol. 47, no. 5, pp. 335-336. https://doi.org/10.1049/el.2010.3306
Tanaka S, Zhao Y, Koslow I, Pan CC, Chen HT, Sonoda J et al. Droop improvement in high current range on PSS-LEDs. Electronics Letters. 2011 Mar 3;47(5):335-336. https://doi.org/10.1049/el.2010.3306
Tanaka, S. ; Zhao, Yuji ; Koslow, I. ; Pan, C. C. ; Chen, H. T. ; Sonoda, J. ; Denbaars, S. P. ; Nakamura, S. / Droop improvement in high current range on PSS-LEDs. In: Electronics Letters. 2011 ; Vol. 47, No. 5. pp. 335-336.
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