InGaAs/InP photodiode with anti-reflection coating for smartphone proximity Sensors
Bibliographic record
Abstract
To enhance the detection sensitivity of smartphone proximity sensors in the critical 1310 nm infrared band, an InGaAs/InP-based PIN photodiode was fabricated in this study, which exhibits excellent resistance to ambient light interference. A four-layer anti-reflection coating was designed and implemented, achieving a reflectivity as low as 1% at 1310 nm while maintaining an average reflectivity of 40% in the visible range. Test results demonstrate that the fabricated photodiode achieves a responsivity of 0.95 A/W under 1310 nm illumination at -0.5 V bias, whereas the responsivity at 850 nm is effectively suppressed to 0.011 A/W. With a dark current density as low as 3.5×10<sup>⁻⁸</sup> A/cm<sup>²</sup>, this design provides an effective solution for improving the performance of smartphone proximity sensors.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 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 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".