X-ray Excited Optical Luminescence Studies of ZnO and Eu-Doped ZnO Nanostructures
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.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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".