Investigation of structural and optical properties of pure ZnO and co-doped ZnO:Al:Mnx (x=1%, 2%, 3%, 5% at.) semiconductor thin films and electrical properties of produced diodes
| Autor: | Demirbilek, N., Kaya, Mehmet, Yakuphanoğlu, Fahrettin |
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| Jazyk: | turečtina |
| Rok vydání: | 2023 |
| Předmět: |
optical properties
Manganese compounds Thin films Barrier heights Capacitance Thermionic emission Zinc sulfide Semiconductors thin films Magnetic semiconductors Pure ZnO Zinc oxide Al [ZnO] Sol-gels sol-gel photodiode Sol-gel process Semiconducting zinc compounds Photodiodes Co-doped ZnO Rectification ratio Structural and optical properties Crystal structure P-type Si Sol'gel II-VI semiconductors Semiconductor Electric rectifiers Pure co Wide band gap semiconductors ZnO Schottky barrier diodes |
| Popis: | In this work, undoped and co-doped ZnO:Al:Mn semiconductor thin films and p-type Si diodes were produced via sol-gel technique method. The morphological and optical properties of the produced thin films were investigated using SEM, XRD and UV-Spectrophotometer, respectively. It was observed that the crystal structure of the semiconductor samples had a hexagonal wurtzite structure and the forbidden energy gaps of the samples decreased with increasing Mn contribution. The experimental zero-feed current barrier height (?b(I-V)), rectification ratio, ideality factor and Ion/Ioff parameters of the diodes were determined via the thermionic emission model. It was determined that the produced Al/p-Si/ZnO:Al:Mn/Al diode had high rectification ratio and Ion/Ioff values of 1.56x105 and 1.54x104, respectively, and exhibited light-sensitive behaviour. Also, the capacitance barrier height (?b(C-V)), built-in voltage (Vbi), diffusion potential (Vd), donor concentration (Nd) and depletion layer width (Wd) values of Al/p-Si/ZnO:Al:Mn/Al diode were calculated via the C-2-V graph drawn under 1MHz frequency. The results show that the fabricated diodes can be used as photodiodes or photosensors in optoelectronic applications. © 2023 Gazi Universitesi Muhendislik-Mimarlik. All rights reserved. Firat Üniversitesi, FU: FF16.24 This study was supported by Firat University, for PhD thesis (Project No. FF16.24). |
| Databáze: | OpenAIRE |
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