Extraction of the average collector velocity in high-speed NpN InP/GaAsSb/InP DHBTs
Bibliographic record
Abstract
In "type-II" NpN InP/GaAsSb/InP double heterostructure bipolar transistors (DHBTs), the p/sup +/ GaAsSb base conduction band edge lies /spl Delta/E/sub C/ above the InP collector conduction band: a small ballistic energy /spl Delta/E/sub C/ is imparted to collected electrons as they are launched into the collector. The high initial velocity should in principle reduce the collector signal delay time. In the present work, we extract the average collector electron velocity in high-speed InP/GaAsSb/InP DHBTs, and find a peak average velocity approaching 4 /spl times/ 10/sup 7/ cm/s across a 2000 /spl Aring/ InP collector. This finding provides the first evidence of the performance advantage afforded by abrupt type-II B/C junctions for collector transport when compared to the conventional graded 'launchers' required when a GaInAs base layer is used.
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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) | 0.003 | 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".