Abatement of Perfluorocompounds by Tandem Packed-Bed Plasmas for Semiconductor Manufacturing Processes
Bibliographic record
Abstract
The technological feasibility and chemical kinetics of carbon tetrafluoride (CF 4 ) decomposition with tandem packed-bed plasmas (TPBPs) are investigated in this study. Relevant parameters including types of packing dielectric materials, applied voltage, discharge gap, and Ar additives are extensively investigated. Results demonstrate that the addition of Ar is beneficial to CF 4 abatement. Operating at a higher voltage results in higher removal efficiencies. The effect of packing dielectric materials on CF 4 abatement is in the order of BaTiO 3 > Al 2 O 3 > glass pellets, being correlative with their dielectric constants. An overall kinetic model is also developed. Experimental results and kinetic analysis indicate that the CF 4 removal efficiency achieved with a TPBP obeys a first-order rate law. The overall removal rate constant ( k, s -1 ) can be expressed in an Arrhenius form, k = 0.1313 P s 0.6887, where P s represents the specific power (W/cm 3 ). The requirement of 90% reduction of perfluorocompounds for a semiconductor manufacturing process can be accomplished by combining five TPBP reactors in series, being operated at a residence time of 3.2 s and a specific power of 1.2 W/cm 3 .
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| 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 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".