Engineering Architecture of Quantum Dot-Based Light-Emitting Diode for High Device Performance with Double-Sided Emission Fabricated by Nonvacuum Technique
Why this work is in the frame
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Bibliographic record
Abstract
The CdSe/ZnS quantum dots (QDs) have drawn the attention of the researchers due to their superior photophysical properties and their applications in QD-based light-emitting diodes (QLEDs). The conventional CdSe/ZnS-based QLED uses a highly conductive electron-transport layer, low-mobility hole-transporting layers (HTLs), and a vacuum-deposited opaque metal electrode at the top. This structure renders unbalanced charge injection into the emissive layer and also allows the device to emit light only at the bottom side, which affects the device output luminance and stability. Moreover, in the vacuum-deposition technique, the fabrication process is more complex, expensive, and time-consuming. To address all these issues, we fabricated an all-solution processable double-sided emitting QLED by a nonvacuum technique using high mobility multi-HTLs with a cascade structure, an insulating layer, and a transparent silver nanowire (AgNW) electrode for balanced charge injection for obtaining higher luminance at the top-side AgNW electrode. The as-fabricated QLED exhibited a very low turn-on voltage and high luminance of 2.2 V and 41,010 cd m–2, respectively. The QLED has also shown a high current efficiency of 15.2 cd A–1, a luminous efficiency of 16.2 lm W–1, and an external quantum efficiency of 8.2% at the top-side. These results indicate that the double-sided emitting QLED device opens up a pathway for designing next-generation lighting and display devices.
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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 | 0.001 | 0.000 |
| 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 | 0.000 |
| Open science | 0.001 | 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