Silicon macroporous arrays with high aspect ratio prepared by ICP etching

Guozheng Wang; Bingchen Yang; Ji Wang; Jikai Yang; Qingduo Duanmu

doi:10.1117/12.2309909

20 February 2018 Silicon macroporous arrays with high aspect ratio prepared by ICP etching

Guozheng Wang, Bingchen Yang, Ji Wang, Jikai Yang, Qingduo Duanmu

Proceedings Volume 10697, Fourth Seminar on Novel Optoelectronic Detection Technology and Application; 106970Y (2018) https://doi.org/10.1117/12.2309909
Event: Fourth Seminar on Novel Optoelectronic Detection Technology and Application, 2017, Nanjing, China

Abstract

This paper reports on a macroporous silicon arrays with high aspect ratio, the pores of which are of 162, 205, 252, 276μm depths with 6, 10, 15 and 20 μm diameters respectively, prepared by Multiplex Inductively Coupled Plasma (ICP) etching. It was shown that there are very differences in process of high aspect ratio microstructures between the deep pores, a closed structure, and deep trenches, a open structure. The morphology and the aspect ratio dependent etching were analyzed and discussed. The macroporous silicon etched by ICP process yield an uneven, re-entrant, notched and ripples surface within the pores. The main factors effecting on the RIE lag of HARP etching are the passivation cycle time, the pressure of reactive chamber, and the platen power of ICP system.

Citation Download Citation

Guozheng Wang, Bingchen Yang, Ji Wang, Jikai Yang, and Qingduo Duanmu "Silicon macroporous arrays with high aspect ratio prepared by ICP etching", Proc. SPIE 10697, Fourth Seminar on Novel Optoelectronic Detection Technology and Application, 106970Y (20 February 2018); https://doi.org/10.1117/12.2309909

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