Presentation 2016-12-12
Suppression of Etch Pits by Control of Etching Modes in Electrochemical Etching of p-type 4H-SiC
Taro Enokizono, Tsunenobu Kimoto, Jun Suda,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) In the EC etching, only p-type SiC is selectively etched through the following mechanism. SiC is oxidized by holes supplied from p-type SiC to the SiC/electrolyte interface. Subsequently, the formed oxide (SiOx) is removed (chemically etched) by the electrolyte. The EC etching suffers from formation of etch pits at the places where dislocations intersect the surface. In this study, we found two modes of EC etching from the viewpoint of rate balance between the oxidation of SiC by current flow and the removal of formed oxide by electrolyte, and we tried to suppress the formation of etch pits by controlling the etching mode.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) p-SiC / electrochemical etching / etch pit / dislocation
Paper # EID2016-22,SDM2016-103
Date of Issue 2016-12-05 (EID, SDM)

Conference Information
Committee SDM / EID
Conference Date 2016/12/12(1days)
Place (in Japanese) (See Japanese page)
Place (in English) NAIST
Topics (in Japanese) (See Japanese page)
Topics (in English) Fabrication and Evaluation of Silicon Related Materials
Chair Tatsuya Kunikiyo(Renesas) / Tomokazu Shiga(Univ. of Electro-Comm.)
Vice Chair Takahiro Shinada(Tohoku Univ.) / Mutsumi Kimura(Ryukoku Univ.) / Yuko Kominami(Shizuoka Univ.)
Secretary Takahiro Shinada(Tohoku Univ.) / Mutsumi Kimura(Renesas) / Yuko Kominami(NTT)
Assistant Hiroya Ikeda(Shizuoka Univ.) / Rumiko Yamaguchi(Akita Univ.) / Hiroyuki Nitta(Japan Display) / Mitsuru Nakata(NHK) / Takashi Kojiri(ZEON) / Ryosuke Nonaka(Toshiba)

Paper Information
Registration To Technical Committee on Silicon Device and Materials / Technical Committee on Electronic Information Displays
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Suppression of Etch Pits by Control of Etching Modes in Electrochemical Etching of p-type 4H-SiC
Sub Title (in English)
Keyword(1) p-SiC
Keyword(2) electrochemical etching
Keyword(3) etch pit
Keyword(4) dislocation
1st Author's Name Taro Enokizono
1st Author's Affiliation Kyoto University(Kyoto Univ.)
2nd Author's Name Tsunenobu Kimoto
2nd Author's Affiliation Kyoto University(Kyoto Univ.)
3rd Author's Name Jun Suda
3rd Author's Affiliation Kyoto University(Kyoto Univ.)
Date 2016-12-12
Paper # EID2016-22,SDM2016-103
Volume (vol) vol.116
Number (no) EID-354,SDM-355
Page pp.pp.59-62(EID), pp.59-62(SDM),
#Pages 4
Date of Issue 2016-12-05 (EID, SDM)