Synthesis of Cu<sub>3</sub>BiS<sub>3</sub> Thin Films by Heating Metal and Metal Sulfide Precursor Films under Hydrogen Sulfide
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Bibliographic record
Abstract
The synthesis of Cu 3 BiS 3 thin films on fused silica substrates by heating Cu−Bi metal precursor films and Cu−S−Bi metal sulfide precursor films in a H 2 S atmosphere has been investigated. We have systematically evaluated the effect of precursor composition and structure, heating temperature, heating profile, and gas composition and pressure. Phase-pure Cu 3 BiS 3 films 250−1000 nm thick were formed, with the morphology of the resulting films being highly dependent on the composition, structure, and heating profile of the precursor films. It was found that precursor composition determines the reaction pathway, and that the reaction pathway is the dominant factor in controlling the morphology of the Cu 3 BiS 3 thin film. This precursor/pathway/morphology relationship results in Cu 3 BiS 3 thin films that are discontinuous or contain hollow pockets between the film and substrate, regardless of the processing conditions employed. The electrical resistivity of these Cu 3 BiS 3 films ranged from 3−200 Ω cm.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 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)
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 it