A Self‐Powered Photoelectrochemical Detection Device Using Scalable InGaN/GaN Nanowire Arrays
Why this work is in the frame
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Bibliographic record
Abstract
Abstract Photoelectrochemical photodetectors (PEC‐PDs) offer several advantages, including simple and low‐cost fabrication, self‐powered operation, high photoresponse, and strong environmental sensitivity. In this work, we report the self‐powered PEC photodetection characteristics of nanowire (NW)‐based, green‐emitting InGaN/GaN multiple quantum well (MQW) PEC‐PDs fabricated via a scalable top‐down process. The nanowire geometry significantly enhances the photoresponse compared to planar InGaN/GaN photoelectrodes, attributed to the increased solid–liquid interfacial area and improved carrier transport. A maximum photocurrent density of 16 mAcm −2 (twice that of the planar structure) is recorded under 365 nm illumination at 43.5 mWcm −2 without external bias. The device exhibits strong ultraviolet sensitivity with a peak at 365 nm and an extended response into the visible region. Notably, a high photoresponsivity of ≈330 mAW −1 is achieved at a lower illumination intensity of 0.7 mWcm −2 . The photodetector further demonstrates fast, stable, and reproducible performance across different biases and illumination conditions. These results highlight the strong potential of InGaN/GaN MQW NW‐based PEC photodetectors for scalable, efficient, and stable self‐powered optoelectronic applications.
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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) | 0.001 | 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) | 0.001 | 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