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Inductively coupled plasma etching of in1-x-yal xgayas In bcl3/cl2/ar

  • Jinhua Ning*
  • , Kefeng Zhang
  • , Hengjing Tang
  • , Yang Wang
  • , Xue Li
  • , Haimei Gong
  • *Corresponding author for this work
  • CAS - Shanghai Institute of Technical Physics
  • University of Chinese Academy of Sciences

Research output: Contribution to journalConference articlepeer-review

Abstract

In this paper, dry etching of In0.8Al0.2As/In 0.8Ga0.2As/In1-xAlxAs (In 1-x-yAlx3sGayAs) epitaxy material was studied in BCI3/CI2/AJ inductively coupled plasma (ICP). Etching behavior was characterized by varying the BCI3/CI2/Ar mixing ratio, ICP power or DC-bias. The results indicate that, in CI2 dominant condition, smooth surfaces are achieved with mean etch rate exceeding 2 μm/min. As the ratio of BCI3 increasing, the etch rates decrease monotonously and the surfaces becomes rougher because of low volatility InClx etch product. ICP power influences the etch rates, and the etch rates increase monotonously with DC-bias. The result is useful for the fabrication of extended long-wavelength response optoelectronic InGaAs devices.

Original languageEnglish
Article number71353I
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume7135
DOIs
StatePublished - 2008
Externally publishedYes
EventOptoelectronic Materials and Devices III - Hangzhou, China
Duration: 27 Oct 200830 Oct 2008

Keywords

  • Bcl/cl/ar
  • ICP
  • InGaAs
  • Inalas

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