Investigation of dopant dependent wave velocity in GaN thin film SAW filter

Hwan Hee Jeong, Sun Ki Kim, Jae Sung Lee, Hyun Chul Choi, Jung Hee Lee, Yong Hyun Lee

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Undoped, Zn-doped, Mg-doped GaN thin film were prepared on sapphire substrate by MOCVD. SAW velocity was measured with the center frequency by HP8753C. Mg-doped GaN has the highest SAW velocity of 5617 m/s at kh=0.157 and undoped GaN has the lowest SAW velocity of 5400 m/s at kh=0.188. TCF is - 60.8 ppm/°C for undoped GaN, -46.8 ppm/°C for Zn-doped GaN and -18.3 ppm/°C for Mg-doped GaN, respectively.

Original languageEnglish
Pages (from-to)207-209
Number of pages3
JournalProceedings of the IEEE Ultrasonics Symposium
Volume1
DOIs
StatePublished - 2001

Keywords

  • Mg-doped GaN
  • MOCVD
  • SAW filter
  • Zn-doped GaN

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