Review of plasma etching processes for III-V semiconductors
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Bibliographic record
Abstract
This paper provides a comprehensive literature review and analysis of III-V semiconductor plasma etching, highlighting key etching considerations and providing literature references to inform future process development. Plasma etching processes for III-V materials such as gallium arsenide (GaAs), indium phosphide (InP), and gallium nitride (GaN) are essential to fabricate many photonic and optoelectronic devices. Such applications frequently require etches with high anisotropy, selectivity and aspect ratio while maintaining minimal roughness and lateral etching. Ten plasma etching techniques used for III-V materials as well as the impact of plasma process parameters on etch results are reviewed. Main etching challenges include aluminum oxidation, non-volatile indium etch subproducts when < 150 °C, and strong III-N bonds. Exhaustive reference tables are generated to report capacitively coupled plasma (CCP) and inductively coupled plasma (ICP) etching process parameters for the main binary, ternary, and quaternary III-V semiconductors. An analysis of binary III-V etching is presented in a summative reference plot, which highlights trends in etch rate, etch technology, and active gas chemistry. Among studies reporting etch rates, gallium arsenide was etched most frequently, with ICP being the dominant etch technique. Multilayer systems and plasma damage are briefly discussed, with post-etch treatments and hydrogen plasmas being used for damage passivation. Overall, III-V materials can be etched with plasma up to several μ m/min, with most processes using chlorine-based chemistries such as Cl 2 , BCl 3 , and SiCl 4 .
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Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
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Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it