P-i-n MgBeZnO-based heterostructured ultraviolet LEDs

Hsin Ying Lee, Hao Yu Chang, Li Ren Lou, Ching Ting Lee

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Triple targets of MgO, Be, and Zn and double targets of MgO and Al-doped ZnO were used to deposit i-Mg0.047Be0.083Zn 0.870O films and n-MgZnO:Al films in a magnetron radio frequency co-sputter system. The optical energy bandgap of the i-Mg0.047Be 0.083Zn0.870O films and n-MgZnO:Al films were 3.51 and 3.75 eV, respectively. The electron concentration and mobility of the n-MgZnO:Al films were 5.10 × 1021 cm-3 and 2.30 cm 2/V·s, respectively. The i-Mg0.047Be 0.083Zn0.870O film and n-MgZnO:Al films were sequentially deposited on a p-GaN layer for fabricating p-i-n ultraviolet light-emitting diode heterostructures. The peak emission wavelength of the resulting ultraviolet light-emitting diodes was ranging from 352.8 to 362.6 nm, when the injection current increased from 5 to 80 mA.

Original languageEnglish
Article number6571207
Pages (from-to)1770-1773
Number of pages4
JournalIEEE Photonics Technology Letters
Volume25
Issue number18
DOIs
Publication statusPublished - 2013 Sep 5

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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