Materials (May 2019)

Fabrication of Diamond Submicron Lenses and Cylinders by ICP Etching Technique with SiO<sub>2</sub> Balls Mask

  • Zongchen Liu,
  • Tian-Fei Zhu,
  • Yan-Feng Wang,
  • Irfan Ahmed,
  • Zhangcheng Liu,
  • Feng Wen,
  • Xiaofan Zhang,
  • Wei Wang,
  • Shuwei Fan,
  • Kaiyue Wang,
  • Hong-Xing Wang

DOI
https://doi.org/10.3390/ma12101622
Journal volume & issue
Vol. 12, no. 10
p. 1622

Abstract

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Submicron lenses and cylinders exhibiting excellent properties in photodetector and quantum applications have been fabricated on a diamond surface by an inductively-coupled plasma (ICP) etching technique. During ICP etching, a layer containing 500 nm diameter balls of SiO2 was employed as mask. By changing the mixing ratio of O2, Ar and CF4 during ICP etching, several submicron structures were fabricated, such as cylinders and lenses. The simulation results demonstrated that such submicron structures on a diamond’s surface can greatly enhance the photon out-coupling efficiency of embedded nitrogen-vacancy center.

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