Transition from Photoconductivity to Photovoltaic Effect in P3HT/CuInSe<sub>2</sub> Composites
Bibliographic record
Abstract
We report the investigation of composites of poly-(3-hexylthiophene) (P3HT) and CuInSe 2 nanocrystals (NCs). CuInSe 2 NCs were synthesized at gram scale through a colloidal route. Cyclic voltammetry was used to determine the HOMO–LUMO energy levels, as well as the energies of trap states intrinsic to CuInSe 2 NCs. The results suggest that nanocrystal–polymer charge transfer is foreseeable in the P3HT and CuInSe 2 system because of their type II band alignment. We studied optical properties of the hybrid composite films of P3HT and CuInSe 2 NCs as a function of P3HT/CuInSe 2 NCs weight ratios. The quenching of photoluminescence spectra with the increase of CuInSe 2 ratio in the composite was interpreted to result from charge transfer between the polymer and CuInSe 2 NCs. We further studied photodiode devices that exhibited a transition from photoconductive gain to the photovoltaic effect with an increase of the P3HT/CuInSe 2 weight ratio. Performance of the photovoltaic devices was strongly limited by intrinsic traps associated with the CuInSe 2 NCs.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 | 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".