Photoplastic effect in II–VI semiconductors: The role of hole redistribution in dislocation glide
Bibliographic record
Abstract
Abstract Photoplasticity in semiconductors, characterized by the modification of plastic deformation under light, has long been recognized but its underlying mechanisms remain elusive. Here, we integrated quantum mechanics (QM) simulations with nanoindentation experiments to investigate the impact of light‐induced electron‐hole pairs on the plastic deformation in two typical II–IV semiconductors: ZnS and CdTe. For ZnS, the QM simulations indicate an increase in the energy for breaking the Zn‐S bond within the S‐core dislocation in its glide process, due to the redistribution of excited holes. This enhancement in bond energy elevates the energy barrier for dislocation glide, eventually saturating at high electron‐hole concentrations and leading to reduced dislocation mobility in ZnS under light. These findings align well with the nanoindentation experiments, which demonstrate an increase followed by a plateau in the hardness of ZnS under light. In contrast, CdTe exhibits a reduced energy barrier for the glide of Te‐core dislocation due to the lack of hole redistribution, likely causing an enhanced dislocation mobility.
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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 | 0.001 | 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".