Design of Gallium Nitride-Based Photodetector for Enhanced Accuracy in Solar Ultraviolet Index Monitoring
Abstract
:1. Introduction
2. Novel UV Detector
2.1. Novel Materials and Design Methods for UV Detectors
2.2. Structure and Parameters of the New UV Detector
3. Design Results and Analysis
3.1. Simulation Parameter Setting
3.2. Simulation Results
4. Discussion of the Results
4.1. Comparison of the Spectral Responses
4.2. Experimental Setup
4.2.1. Test Spectra
4.2.2. UVI Calculation
4.3. Experimental Results
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Ultraviolet Index | Potential Impact on Human Body (Sunburn Time/min) |
---|---|
0–2 | 100~180 |
3–4 | 60–100 |
5–6 | 30–60 |
7–9 | 20–40 |
10+ | <20 |
Parameters | Units | Si | SiC | GaN |
---|---|---|---|---|
Eg | eV | 1.12 | 3.26 | 3.39 |
μn | cm2/V·s | 1400 | 950 | 1500–2000 |
Vsat | 107 cm/s | 1 | 2 | 2.5 |
Parameters | Value | Units |
---|---|---|
Temperature | 300 | K |
Band gap of GaN | 3.42 | eV |
Electron SRH lifetime | 10 | ns |
Hole SRH lifetime | 10 | ns |
Electron effective mass (relative) | 0.222 | -- |
Hole effective mass (relative) | 1.0 | -- |
Electron mobility | 480 | cm2/Vs |
Hole mobility | 20 | cm2/Vs |
Type of Detector | Covering Range (nm) | Mismatch Factor |
---|---|---|
Our proposed detector | 250 nm–400 nm | 8.63% |
The Apogee UV detector | 290 nm–390 nm | 36.58% |
XAR-UAB Radiometer | 210 nm–380 nm | 21.15% |
Solarimeter 5.0 Radiometer | 250 nm–390 nm | 13.06% |
GaN p-i-n ultraviolet photodetectors | 250 nm–450 nm | 101.18% |
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Li, H.; Li, W.; Liu, T.; Xu, Y.; He, D.; Wang, J. Design of Gallium Nitride-Based Photodetector for Enhanced Accuracy in Solar Ultraviolet Index Monitoring. Photonics 2024, 11, 812. https://doi.org/10.3390/photonics11090812
Li H, Li W, Liu T, Xu Y, He D, Wang J. Design of Gallium Nitride-Based Photodetector for Enhanced Accuracy in Solar Ultraviolet Index Monitoring. Photonics. 2024; 11(9):812. https://doi.org/10.3390/photonics11090812
Chicago/Turabian StyleLi, Hanlin, Wenhao Li, Tianxiang Liu, Yiman Xu, Dongze He, and Jun Wang. 2024. "Design of Gallium Nitride-Based Photodetector for Enhanced Accuracy in Solar Ultraviolet Index Monitoring" Photonics 11, no. 9: 812. https://doi.org/10.3390/photonics11090812