Impact of KOH etching on nanostructure fabricated by local anodic oxidation method

Arash Dehzangi, Farhad Larki, Burhanuddin Yeop Majlis, Mahmood Goodarz Naseri, Manizheh Navasery, A. Makarimi Abdullah, Sabar D. Hutagalung, Norihan Abdul Hamid, Mimiwaty Mohd Noor, Mohammadmahdi Vakilian, Elias B. Saion

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

In this letter, we investigate the impact of potassium hydroxide (KOH) etching procedure on Silicon nanostructure fabricated by Atomic force microscopy on P-type Silicon-on-insulator. An electrochemical process, as the local anodic oxidation followed by two wet chemical etching steps, KOH etching for silicon removal and hydrofluoric etching for oxide removal, were implemented to fabricate the silicon nanostructures. The effect of the pure KOH concentrations (10% to 30% wt) on the quality of the surface is studied. The influence of etching immersing time in etching of nanostructure and SOI surface are considered as well. Impact of different KOH concentrations mixed with 10% IPA with reaction temperature on etch rate is investigated. The KOH etching process is elaborately optimized by 30%wt. KOH + 10%vol. IPA in appropriate time and temperature. The angle of the walls in etch pit for extracted nanowire reveals some deviation from the standard anisotropic etching.

Original languageEnglish
Pages (from-to)8084-8096
Number of pages13
JournalInternational Journal of Electrochemical Science
Volume8
Issue number6
Publication statusPublished - Jun 2013

Fingerprint

Anodic oxidation
Etching
Nanostructures
Silicon
Anisotropic etching
Potassium hydroxide
Wet etching
Oxides
Nanowires
Atomic force microscopy
Temperature

Keywords

  • Isopropyl alcohol (IPA)
  • Local anodic oxidation (LAO)
  • Potassium hydroxide (KOH) wet chemical etching
  • Silicon-on-insulator (SOI)

ASJC Scopus subject areas

  • Electrochemistry

Cite this

Dehzangi, A., Larki, F., Yeop Majlis, B., Naseri, M. G., Navasery, M., Abdullah, A. M., ... Saion, E. B. (2013). Impact of KOH etching on nanostructure fabricated by local anodic oxidation method. International Journal of Electrochemical Science, 8(6), 8084-8096.

Impact of KOH etching on nanostructure fabricated by local anodic oxidation method. / Dehzangi, Arash; Larki, Farhad; Yeop Majlis, Burhanuddin; Naseri, Mahmood Goodarz; Navasery, Manizheh; Abdullah, A. Makarimi; Hutagalung, Sabar D.; Hamid, Norihan Abdul; Noor, Mimiwaty Mohd; Vakilian, Mohammadmahdi; Saion, Elias B.

In: International Journal of Electrochemical Science, Vol. 8, No. 6, 06.2013, p. 8084-8096.

Research output: Contribution to journalArticle

Dehzangi, A, Larki, F, Yeop Majlis, B, Naseri, MG, Navasery, M, Abdullah, AM, Hutagalung, SD, Hamid, NA, Noor, MM, Vakilian, M & Saion, EB 2013, 'Impact of KOH etching on nanostructure fabricated by local anodic oxidation method', International Journal of Electrochemical Science, vol. 8, no. 6, pp. 8084-8096.
Dehzangi, Arash ; Larki, Farhad ; Yeop Majlis, Burhanuddin ; Naseri, Mahmood Goodarz ; Navasery, Manizheh ; Abdullah, A. Makarimi ; Hutagalung, Sabar D. ; Hamid, Norihan Abdul ; Noor, Mimiwaty Mohd ; Vakilian, Mohammadmahdi ; Saion, Elias B. / Impact of KOH etching on nanostructure fabricated by local anodic oxidation method. In: International Journal of Electrochemical Science. 2013 ; Vol. 8, No. 6. pp. 8084-8096.
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