TF-027
Thin-Film Materials & Surface Engineering
PhotoBattery can define, execute, and validate this work as a measurable engineering engagement - from specification freeze and method selection through evidence review, acceptance testing, and decision-ready recommendations.
Atomic Layer Etching (ALE) Process Development is a structured engineering service for organizations that need a defined technical answer, a validated process or test path, and evidence suitable for the next design, qualification, or investment decision. The work can address cyclic surface modification; removal chemistry; ion-energy optimization; etch-per-cycle control; selectivity engineering; surface roughness reduction. PhotoBattery selects and applies ALD reactor; precursor delivery module; in-situ QCM or rate monitor; ellipsometry; XPS/AFM verification; ICP-RIE/RIE or DRIE tool, then evaluates the result against film/property uniformity target: typically ±2-5%; run-to-run repeatability: target ≤3-5% drift; surface roughness/stress within client limit; documented process window with pass/fail criteria.
Our team translates your technical objective into a controlled work package with the right tools, evidence, checkpoints, and acceptance criteria. You receive traceable results and a practical next-step recommendation rather than a generic assessment.
Engagements begin with the samples, architecture, process history, operating limits, and success metric you provide. We then confirm the test or engineering path, control measurement uncertainty, document dependencies and risks, and align the deliverables to the decision you need to make.
Catalogue reference: service TF-027, source page 17.
| Service code | TF-027 |
|---|---|
| Technical field | Thin-Film Materials & Surface Engineering |
| System under test | cyclic surface modification; removal chemistry; ion-energy optimization; etch-per-cycle control; selectivity engineering; surface roughness reduction; process integration with ALD or conventional plasma etching; Atomic Layer Etching (ALE) Process Development |
| Equipment & methods | ALD reactor; precursor delivery module; in-situ QCM or rate monitor; ellipsometry; XPS/AFM verification; ICP-RIE/RIE or DRIE tool; endpoint/OES monitoring |
| Required client inputs | substrate and full layer stack; target film thickness/properties; thermal and contamination limits; previous recipe/process history |
| Deliverables | optimized recipe/process window; metrology dataset and maps; risk and compatibility notes; process-transfer document |
| Accuracy / target metrics | film/property uniformity target: typically ±2-5%; run-to-run repeatability: target ≤3-5% drift; surface roughness/stress within client limit; documented process window with pass/fail criteria |
| Lead discipline | Best staffed by a Thin-film process engineer / materials scientist |
Best staffed by a Thin-film process engineer / materials scientist. Engagement should begin with a one-page specification freeze, sample/data access plan, and acceptance-metric agreement. Avoid claiming production readiness until repeatability, measurement uncertainty, and process ownership are documented.
Share the objective, available samples or data, constraints, and acceptance target.
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