Contact effects and extraction of intrinsic parameters in poly(3-alkylthiophene) thin film field-effect transistors
Bibliographic record
Abstract
We report on contact effects in polymeric thin film transistors based on poly(3-octylthiophene) and poly(3-hexadecylthiophene) with gold contact electrodes and in the bottom contact configuration. A method to extract the intrinsic channel mobility from the measured extrinsic mobility over a broad range of gate voltage is presented. This method uses the I-V characteristics of the transistor in its reverse mode operation. The results show that the intrinsic mobility in the channel is gate voltage dependent and increases almost linearly with voltages at biases above the threshold voltage. By applying a model based on the theory of space-charge-limited conduction, the dependence of the threshold voltage on the contacts and the shifts observed in this parameter with different polymer film thicknesses are explained. We also apply this model to explain the effects of light in reducing the contact effects and changing the device parameters from extrinsic in the dark to intrinsic under illumination.
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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".