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Dry-etch Characteristics of InP/InGaAsP Photonic Crystal Structure

InP/InGaAsP 광자결정 구조 제작을 위한 건식 식각 특성

  • 이지면 (국립순천대학교 재료금속공학과)
  • Published : 2004.12.01

Abstract

Two-dimensionally arrayed nanocolumn lattices were fabricated by using double-exposure laser holographic method. The hexagonal lattice was formed by rotating the sample with 60 degree while the square lattice by 90 degree before the second laser-exposure. The reactive ion etching for a typical time of 30 min using CH$_4$/H$_2$ plasma enhanced the aspect-ratio by more than 1.5 with a slight increase of the bottom width of columns. The etch-damage was observed by photoluminescence (PL) spectroscopy which was removed by the wet chemical etching using HBr/$H_2O$$_2$/$H_2O$ solution, leading into the enhanced PL intensities of the PCs.

Keywords

References

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