Material and growth mechanism studies of microcrystalline silicon deposited from SiF<sub>4</sub>/H<sub>2</sub>/Ar gas mixtures
Bibliographic record
Abstract
Hydrogenated microcrystalline silicon is of great interest as the intrinsic layer in thin film solar cells. It is generally accepted that optimized cells use an I-layer with a crystalline fraction ranging from 50% to 70%. We report here on the use of fully crystallized layers deposited from SiF 4 /H 2 /Ar gas mixtures. A V OC of 536 mV and a J SC of 25.4 mA/cm 2 have been obtained in PIN solar cells using a fully crystallized intrinsic material. Fourier transform photocurrent spectroscopy measurements show that the films have a very low defect density down to 5.1 × 10 14 cm −3 . The role of H 2 during deposition has been investigated: it is demonstrated that H 2 is needed to remove F by forming HF molecules. When all atomic F has been removed from the plasma, the remaining atomic H can then contribute to μc-Si:H growth.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".