Synthesis and photoluminescence properties of Mn2+ doped ZnCN2 phosphors
Bibliographic record
Abstract
Mn2+ doped ZnCN2 phosphors were synthesized by a solid-state reaction from doped zinc oxalate and carbon nitride under NH3 atmosphere at 600 °C in only 1 h. The samples were characterized by powder X-ray diffraction, scanning electron microscopy and their diffuse reflectance and luminescence properties were investigated. All pure and well-crystallized Mn2+ doped samples exhibit broad orange emission around 585 nm when excited at 270 nm at room temperature corresponding to the 4T1g(4G) → 6A1g(6S) transition. Maximum emission is obtained for Mn2+ content of 2 mol% and the emission intensity decreases drastically on the order of 90% between 293 and 385 K. Additionally, the blue luminescence of as-prepared non-doped ZnCN2 is discussed on the basis of the presence of crystal defects.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| 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 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".