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http://repository.aaup.edu/jspui/handle/123456789/1592
Title: | Ag/n-Si/p-MgSe/(Ag, C, Au, Pt) transistors designed as current rectifiers, photodetectors and as ac signal filters suitable for VLC, IR and 6G technologies |
Authors: | Qasrawi, Atef$AAUP$Palestinian Amotiri, R A$Other$Other Algarni, S E$Other$Other |
Keywords: | MgSe, thermal evaporation, VLC, photosensors, band offset |
Issue Date: | 28-Oct-2022 |
Publisher: | Physica Scripta |
Citation: | https://doi.org/10.1088/1402-4896/ac9be8 |
Abstract: | Herein the fabrication and practical applications of p-MgSe thin films as active p-layer of electronic devices are reported. MgSe films are prepared by a vacuum evaporation technique onto n-Si substrates under a vacuum pressure of 10-5 mbar. The films are morphologically, structurally, electrically and opto-electronically investigated. Having identified the work function of p-MgSe as 6.74 eV, the role of Ag, C, Au and Pt metal contacts on the performance of the n-Si/p-MgSe (SM) diodes are studied. It is observed that high rectification ratios of ~104 and 102 are achieved at an applied voltage of 3.0 V for the Ag/SM/C and Ag/SM/Ag diode structures, respectively. In addition, a current responsivity to visible and infrared light of ~0.70 A/W is observed for the Ag/SM/Ag channels. The noise equivalent ratios, the external quantum efficiency and the detectivity of the Ag/SM/Ag diodes suit requirements of visible light and infrared communication detectors. Moreover, studies of the capacitance-voltage characteristics showed capacitor characteristics. The depleting of the Ag/SM/Ag capacitors is possible up to 50 MHz. Furthermore, analyzing the capacitance, resistance and cutoff frequency spectra have shown that the Ag/SM/Ag device channels can perform as negative resistance sources with cutoff frequency values that suits 6G technology requirements |
URI: | http://repository.aaup.edu/jspui/handle/123456789/1592 |
ISSN: | https://doi.org/10.1088/1402-4896/ac9be8 |
Appears in Collections: | Faculty & Staff Scientific Research publications |
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