In0.23Ga0.77N/GaN MQW LEDs with a low temperature GaN cap layer

L. W. Wu, S. J. Chang, Y. K. Su, R. W. Chuang, Y. P. Hsu, C. H. Kuo, W. C. Lai, T. C. Wen, J. M. Tsai, J. K. Sheu

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61 Citations (Scopus)

Abstract

Mg-doped p-GaN epitaxial layers prepared at different temperatures were prepared and characterized. It was found that we could achieve a higher hole concentration and a rough surface by reducing the growth temperature down to 800 °C. In0.23Ga0.77N/GaN multiquantum well (MQW) light emitting diodes (LEDs) with such a low 800 °C-grown p-GaN cap layer were also fabricated. It was found that we could enhance the LED output intensity by more than 90% with the low 800 °C-grown p-GaN cap layer, as compared to the conventional high 1000 °C-grown p-GaN cap layer.

Original languageEnglish
Pages (from-to)2027-2030
Number of pages4
JournalSolid-State Electronics
Volume47
Issue number11
DOIs
Publication statusPublished - 2003 Nov

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Materials Chemistry
  • Electrical and Electronic Engineering

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