New insights into charge extraction and formation of the band-bending region in Schottky junction organic solar cells
Bibliographic record
Abstract
Schottky junction organic solar cells were recently introduced and have demonstrated surprising performance with high open circuit voltage and short circuit current. In this study, the formation of the band bending region and charge extraction from the donor molecules in C60 and C70 based Schottky junction solar cells are investigated. Band bending was observed when the ITO anode was treated with CF4O2 and O2 plasma. These cells demonstrated similar performance to cells with MoO3 coated ITO, which are more common in literature. The presence of donor material at the anode interface was also found to decrease the open circuit voltage of the cell by decreasing the number of fullerene molecules at the anode and consequently, decreasing the extent of band bending. The short-circuit current of the Schottky junction solar cells increased when a thin layer of neat fullerene was introduced between the ITO anode and the donor doped mixed layer by reducing exciton quenching at the anode interface. Finally, hole extraction from the donor was found to be efficient up to 5 nm away from the anode interface. If donor molecules were placed beyond this distance the fill factor dropped precipitously along with the overall cell efficiency.
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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 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| 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 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".