Abstract
Indium gallium arsenide (InGaAs) is one of the candidate materials to overcome the physical limitation of Si due to its excellent electrical properties. The effect of surface oxidation on the etching characteristics of InGaAs surface in acidic solutions were investigated. InGaAs surfaces was etched in HCl/H2O2/H2O (CPM) and HNO3/H2O2/H2O (NPM), while there was no thickness change in diluted HCl or HNO3. The CPM-treated InGaAs surface had a lower etching rate than the NPM-treated one, while etching rate of oxidized layer was higher in diluted HCl than in HNO3. NaCl added in the NPM acts as an etching inhibitor for InGaAs and the etching rate was significantly suppressed. It is thought that Cl− anion inhibits the formation of hydroxyl radical (OH∙) or consumes OH∙ in acidic solution, inhibiting surface oxidation of InGaAs and suppressing its material loss.
Original language | English |
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Title of host publication | Ultra Clean Processing of Semiconductor Surfaces XV - Selected peer-reviewed full text papers from the 15th International Symposium on Ultra Clean Processing of Semiconductor Surfaces, UCPSS 2021 |
Editors | Paul W. Mertens, Kurt Wostyn, Marc Meuris, Marc Heyns |
Publisher | Trans Tech Publications Ltd |
Pages | 89-94 |
Number of pages | 6 |
ISBN (Print) | 9783035738018 |
DOIs | |
Publication status | Published - 2021 |
Event | 15th International Symposium on Ultra Clean Processing of Semiconductor Surfaces, UCPSS 2021 - Mechelen, Belgium Duration: 2021 Apr 12 → 2021 Apr 15 |
Publication series
Name | Solid State Phenomena |
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Volume | 314 SSP |
ISSN (Print) | 1012-0394 |
ISSN (Electronic) | 1662-9779 |
Conference
Conference | 15th International Symposium on Ultra Clean Processing of Semiconductor Surfaces, UCPSS 2021 |
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Country/Territory | Belgium |
City | Mechelen |
Period | 21/4/12 → 21/4/15 |
Bibliographical note
Publisher Copyright:© 2021 Trans Tech Publications Ltd, Switzerland.
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Materials Science(all)
- Condensed Matter Physics