Raman and AFM mapping studies of photo-induced crystallization in a-Se films: substrate strain and thermal effects
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Bibliographic record
Abstract
Photo-induced crystallization (PC) is studied in amorphous selenium (a-Se) films deposited on glass with and without intermediate layers of indium tin oxide or polymer material. The spatial profile of PC domains is examined by co-localized scanning atomic force microscopy and Raman mapping. We also explore the thermal behavior of the onset and growth of PC in the a-Se films by Raman spectroscopy measurements at temperatures spanning the glass transition (T g ∼ 313 K). In many films the onset time for PC shows a surprising discontinuity near T g . Inserting a thin polyimide layer between the a-Se film and the substrate inhibits PC. Our results indicate that adhesion to a rigid substrate is important for promoting PC in a-Se films. We find that the discontinuities in the PC onset times, the shape of the mapping profiles, and the effects of having a soft polymer interface layer can be understood by a model that takes account of the substrate shear strain and its relaxation near T g .
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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 | 0.000 | 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