X-ray Excited Optical Luminescence Studies of ZnO and Eu-Doped ZnO Nanostructures
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Bibliographic record
Abstract
Pure (ZnO) and Eu-doped ZnO (Eu:ZnO) nanostructures have been grown in different morphologies by thermal evaporation. The growth of the structures depends on the temperature and concentration gradient during material deposition as well as on the doping species. X-ray excited optical luminescence (XEOL) from nanostructured ZnO and Eu:ZnO shows a correlation of optical properties with morphology on a nanoscale. In particular, the relative intensity of band gap and defect emission (green light) changes drastically in Eu:ZnO and ZnO nanostructures with different morphology. In this Article, we present experimental results from Eu:ZnO and ZnO nanostructures, using synchrotron radiation-based XEOL, time-gated XEOL, and element specific XANES with partial and total photoluminescence yield (PLY). Our results suggest that the rare earth dopant most likely affects the energy transfer and structural changes by nucleation, rather than direct radiative decay from Eu sites.
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| 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