Near-Unity Broadband Quantum Efficiency Enabled by Colloidal Quantum Dot/Mixed-Organic Heterojunction
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Solution-processed semiconducting materials are promising for realizing high-performance, low-cost, and flexible energy conversion devices. In particular, hybrid structures comprising colloidal quantum dots (CQDs) and organic molecules have been proposed to achieve broadband absorption across the visible-to-infrared solar spectrum. However, the photophysical mismatch present at CQD/organic interfaces limits charge extraction, resulting in low power conversion efficiency (PCE). In this study, we sought to overcome this photophysical mismatch, addressing the CQD/organic interface using a library of surface ligands with different functions. We established, using both experiments and theoretical calculations, that thiol termination of the CQD surface reduced the interfacial barrier, resulting in a 4-fold higher charge transfer efficiency at the maximum power point bias. The CQD/mixed-organic heterojunction solar cells exhibit a record photocurrent density of 33.3 mA/cm 2 and near-unity broadband quantum efficiency up to 1100 nm, demonstrating the potential of these devices to harvest infrared solar photons in all-solution-processed tandem 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) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 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) | 0.001 | 0.001 |
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