Combined Surface-Activated Bonding Technique for Low-Temperature Cu/SiO<sub>2</sub> Hybrid Bonding
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Bibliographic record
Abstract
This work develops a combined surface-activated bonding (SAB) technique for low-temperature SiO 2 -SiO 2 and Cu-Cu bonding at 200 °C. The combined SAB technique involves combinations of surface activation by using surface bombardment by neutralized Ar ion beam containing Si atoms, water vapor exposure, and prebonding attach/detach prior to wafer bonding in vacuum. Bonding strength close to Si bulk fracture energy was achieved for both SiO 2 -SiO 2 and Cu-Cu bonding pairs. We suggest the enhanced –OH (both Si–OH and Cu–OH) chemisorption on the wafers and pre-bonding removal of excess H 2 O from the interface/surfaces are the key factors involved in the present low-temperature bonding technique. This technique is promising for 3D integration through Cu/SiO 2 hybrid bonding at no more than 200 °C.
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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 | 0.001 |
| 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 it