Amidinium-Enhanced Charge Dissociation in Homogeneous Quasi-2-Dimensional Perovskite Solar Cells
Bibliographic record
Abstract
Quasi-2-dimensional (quasi-2D) perovskite solar cells (PSCs) have attracted much attention due to their superior stability. However, they suffer from inhomogeneous phase distributions and inefficient exciton dissociations, which hinder charge transport and increase energy loss. Herein, a novel chloride-contained aminidium molecule with Lewis-base properties, butyramidinium chloride (BI), was incorporated into quasi-2D PSCs to improve their performance. Chemical interactions between BI and [PbI 6 ] 4− octahedra were identified, which optimized the crystallization of 2D perovskite. The resultant film showed a favorable crystal orientation and a homogenized energy landscape with a reduced fraction of low- n 2D phases. Moreover, temperature-dependent photoluminescence results indicate reduced exciton binding energy and enhanced charge dissociation after adding BI. Consequently, quasi-2D PSCs ( n = 4) with BI demonstrated a 25% increase in efficiency compared to control devices, attributed to the enhancement of the solar cell’s open-circuit voltage ( V OC ) and fill factor. These results underscore the potential of amidinium-based molecules to improve quasi-2D PSC performance.
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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 | 0.000 |
| 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) | 0.000 | 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 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".