Photoluminescence studies of organic light-emitting devices based on 9,10-bis (2-naphthyl)-2-t-butylanthracene (TBADN)
Bibliographic record
Abstract
We studied changes in photoluminescence yield of 9,10-bis (2-naphthyl)-2-t-butylanthracene (TBADN), a commonly used blue emitter in organic light emitting devices (OLEDs). Our studies show that, unlike in case of tris (8-hydroxyquinoline) aluminum (AlQ 3 ), current flow does not bring about a significant change in TBADN photoluminescence yield under 400nm excitation. We attribute the different behavior of TBADN to its bipolar carrier transport nature, which, in comparison to AlQ 3 , does not facilitate the build-up of significant space charges. Excitation at 360nm, however, leads to a rapid decrease in photoluminescence yield, even in the absence of electrical stressing, revealing that higher excited states of TBADN are less stable, and suggesting they could be playing a role in OLED electroluminescence degradation.
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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) | 0.001 | 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".