Effect of pixel geometric factor on the spatial resolution of linear MWIR mercury-cadmium-tellurium-based photodetectors
The effect of the diode-to-pixel size ratio on the spatial resolution of the linear photovoltaic mid-wave infrared (MWIR) mercury-cadmium-tellurium (MCT) based photodetectors was experimentally studied. Measurements performed on the linear 288×4 photodetectors fabricated using molecular beam epitaxy showed that the resolution of photodetectors based on the MCT material with a photocarrier diffusion length of ~ 40 μm increases with increasing diode size at fixed pixel pitch.
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Keywords
HgCdTe, mid-wave infrared photodetectors, photodetector resolution, photodiode, pixel, pixel geometric factor, line spread function, modulation transfer function, Monte Carlo simulation, noise-equivalent temperature differenceAuthors
| Name | Organization | |
| Vasiliev Vladimir V. | Rzhanov Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences | vas@isp.nsc.ru |
| Vishnyakov Alexei V. | Rzhanov Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences | vishn@isp.nsc.ru |
| Sabinina Irina V. | Rzhanov Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences | sabinina@isp.nsc.ru |
| Sidorov Georgy Yu. | Rzhanov Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences | george@isp.nsc.ru |
| Stuchinsky Victor A. | Rzhanov Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences | stuchin@isp.nsc.ru |
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Effect of pixel geometric factor on the spatial resolution of linear MWIR mercury-cadmium-tellurium-based photodetectors | Izvestiya vuzov. Fizika. 2025. № 2. DOI: 10.17223/00213411/68/2/10
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