Nitride-based flip-chip LEDs with transparent ohmic contacts and reflective mirrors

Shoou-Jinn Chang, W. S. Chen, Yu-Cheng Lin, C. S. Chang, T. K. Ko, Y. P. Hsu, C. F. Shen, J. M. Tsai, S. C. Shei

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

Nitride-based flip-chip light-emitting diodes (LEDs) with various transparent ohmic contacts and reflective mirrors were fabricated. At 470 nm, it was found that Ni could provide 92% transmittance while Ag could provide 92.4% reflectively. It was also found that the 20-mA forward voltages measured from LEDs with Ni+Ag, Ni+Al, and Ni+Pt were 3.15, 3.29, and 3.18 V while the output powers were 16, 13.3, and 11.6 mW, respectively. Furthermore, it was found that lifetimes of the fabricated flip-chip LEDs were good.

Original languageEnglish
Pages (from-to)403-408
Number of pages6
JournalIEEE Transactions on Advanced Packaging
Volume29
Issue number3
DOIs
Publication statusPublished - 2006 Aug 1

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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