Temperature and solvent dependence of CdSe/CdTe heterostructure nanorod spectra
Bibliographic record
Abstract
Charge separation is known to occur in heterostructure nanocrystals with type II alignment. Transfer rates have been inferred from ultrafast measurements, but other elements relevant to this process, such as the role of the solvent and the internal degrees of freedom, are still poorly understood. The present study investigates temperature and solvent effects on the optical properties of the charge-separated state in CdSe/CdTe collinear nanorods. The importance of the surrounding medium in the steady state photoluminescence is suggested both in the solvent and temperature studies. The latter also provides evidence that a charge-separated bound state is formed at the interface of the two materials, while states where electron and hole behave as free carriers are only accessible through an activated process in which the interfacial exciton is dissociated. Finally, using a dipole-dielectric continuum model, we found that the optical properties of the charge-separated state in these nanocrystals change as a function of solvent polarity.
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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) | 0.002 | 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".