Electrical Properties and Photosensitivity of Multi-Barrier Photodiode Structure Based on Semi-Insulating GaAs
O. A. AbdulkhaevPhysical- Technical Institute, SPA “Physics-Sun”, Uzbekistan Academy of Sciences, Tashkent, UzbekistanAnvar A’zamovich YakubovPhysical- Technical Institute, SPA “Physics-Sun”, Uzbekistan Academy of Sciences, Tashkent, UzbekistanF. A. GiyasovaPhysical- Technical Institute, SPA “Physics-Sun”, Uzbekistan Academy of Sciences, Tashkent, UzbekistanA A KhakimovInstitute of Semiconductor Physics and Microelectronics, National University of Uzbekistan, Tashkent, UzbekistanD. M. YodgorovaInstitute of Semiconductor Physics and Microelectronics, National University of Uzbekistan, Tashkent, UzbekistanAbdulaziz KarimovPhysical- Technical Institute, SPA “Physics-Sun”, Uzbekistan Academy of Sciences, Tashkent, Uzbekistan
2020 International Conference on Information Science and Communications Technologies (ICISCT)conference2020en
ABI
Abstract
The present work reports the detailed electrical properties and photosensitivity of multi-barrier photodiode structures based on semi-insulating gallium arsenide. The dependence of the dark current on the voltage is linear up to 70 V when p-n-junction is reverse biased, and is linear up to 300 V when one is forward biased. The structure has a high sensitivity in the region of wavelength which are larger than the red border, determined by the band gap of the base region material. The photosensitivity of the structure corresponds to the photoemission of non-equilibrium charge carriers through a metal-semiconductor rectifying barrier.
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