Photoluminescence Dynamics of CdS Nanocrystals Fabricated by Sequential Ion Implantation
Bibliographic record
Abstract
We have studied photoluminescence (PL) dynamics of CdS nanocrystals fabricated by sequential Cd + and S + ion implantation into Al 2 O 3 matrices. The PL spectrum and PL decay dynamics of CdS nanocrystals are sensitive to the measurement temperature. This is because excitons trapped at shallow localized states are thermally excited to the high-energy state at high temperatures. Two PL bands appear near the absorption edge at elevated temperatures near 100 K. From time-resolved PL spectra and the PL decay dynamics, it is concluded that the observed PL bands near the absorption edge are due to free excitons and excitons trapped at shallow localized states. The PL mechanism in CdS nanocrystals is discussed.
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How this classification was reachedexpand
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)
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 teacher head, 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".