Impact of Br-etching on surface and current-voltage characteristics of CZT detector
Bibliographic record
Abstract
CdZnTe (CZT) is widely recognized as a highly promising material for detecting X-rays and gamma-rays due to its notable advantages over traditional direct conversion detector materials like silicon and germanium, particularly its high density and resistivity, eliminating the need for cryogenic cooling. However, the performance of radiation detectors is significantly influenced by the surface characteristics of the CZT crystal. In this study, we investigate the impact of bromine methanol ($\mathrm{Br}: \mathrm{MeOH}$) etching on eliminating surface-related defects and enhancing the current-voltage characteristics of the CZT detectors. The preparation of CZT detectors often results in surface damage, leading to surface trap states and non-stoichiometry. Optical and atomic force microscopy measurements reveal prominent polishing lines and increased surface roughness of polished CZT wafers. X-ray photoelectron spectroscopy confirms the presence of tellurium oxide on the CZT surface. CZT devices treated with $\mathrm{Br}: \mathrm{MeOH}$ etching demonstrate improved carrier transport at the metal-semiconductor interface compared to untreated ones.
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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".