Ligand‐Mediated Synthesis of Mixed‐Phase Mn<sup>2+</sup>‐Doped Cesium Lead Chloride Nanocrystals
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Bibliographic record
Abstract
Abstract Herein we report a study on the role of alkylamine ligand in tuning the crystal structure and the luminescence of Mn 2+ ‐doped cesium lead chloride (Mn−CPC) nanocrystals. In a typical hot‐injection synthesis of Mn−CPC, oleic acid (OA) and oleylamine (OLA) are used as the capping ligands to mediate the size and surface structure of the nanocrystals. We found that by either increasing the concentration of OLA or substituting OLA with an amine with a shorter chain length (e. g. dodecylamine), the resulted Mn−CPC contains both CsPbCl 3 and Cs 4 PbCl 6 phases. The mixed‐phase Mn−CPC exhibit two major photoluminescence emission bands originated from the CsPbCl 3 bandgap and the Mn d‐d transition, respectively. Besides, a near‐UV emission from Cs 4 PbCl 6 near‐band‐gap exciton emission also appears and is highly sensitive to the excitation wavelength. The formation mechanism of mixed‐phase Mn−CPC nanocrystals is proposed.
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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)
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