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Article
Wet Chemical Digital Etching of GaAs at Room Temperature
Journal of The Electrochemical Society
  • Gregory C. DeSalvo
  • Christopher A. Bozada
  • John L. Ebel
  • David C. Look, Wright State University - Main Campus
  • John P. Barrette
  • Charles L. A. Cerny
  • Ross W. Dettmer
  • James K. Gillespie
  • Charles K. Havasy
  • Thomas J. Jenkins
  • Kenichi Nakano
  • Carl I. Pettiford
  • Tony K. Quach
  • James S. Sewell
  • G. David Via
Document Type
Article
Publication Date
1-1-1996
Abstract

A new room temperature wet chemical digital etching technique for GaAs is presented which uses hydrogen peroxide and an acid in a two‐step etching process to remove GaAs in approximately 15 Å increments. In the first step, GaAs is oxidized by 30% hydrogen peroxide to form an oxide layer that is diffusion limited to a thickness of 14 to 17 Å for time periods from 15 to 120 s. The second step removes this oxide layer with an acid that does not attack unoxidized GaAs. These steps are repeated in succession until the desired etch depth is obtained. Experimental results are presented for this digital etching technique demonstrating the etch rate and process invariability with respect to hydrogen peroxide and acid exposure times.

Comments

© The Electrochemical Society, Inc. 1996. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published in the Journal of The Electrochemical Society, 143 (11), 3652-3656 (1996).

DOI
10.1149/1.1837266
Citation Information
Gregory C. DeSalvo, Christopher A. Bozada, John L. Ebel, David C. Look, et al.. "Wet Chemical Digital Etching of GaAs at Room Temperature" Journal of The Electrochemical Society Vol. 143 Iss. 11 (1996) p. 3652 - 3656 ISSN: 0013-4651
Available at: http://works.bepress.com/david_look/333/