A comparison of electrical characteristics of Au/n-Si (MS) structures with PVC and (PVC: Sm2O3) polymer interlayer. (19th October 2021)

• Record Type: Journal Article
• Authors: Altındal, Şemsettin; Barkhordari, Ali; Özçelik, Süleyman; Pirgholi-Givi, Gholamreza; Mashayekhi, Hamid Reza; Azizian-Kalandaragh, Yashar
• Is Part Of: Physica scripta. Volume 96:Number 12(2021)
• Publication Date: 2021-10-19
• Subjects: MS structures with and without PVC and (Sm2O3-PVC) interlayer -- basic electrical parameters -- current conduction mechanisms -- energy dependent profile of surface-states; Physics -- Periodicals; 530.05
• DOI: 10.1088/1402-4896/ac19cb
• Languages: English
• ISSNs: 0031-8949

Abstract

Abstract: The effects of polyvinylchloride (PVC) and samarium oxide-polyvinylchloride (PVC: Sm2 O3 ) polymer interlayers on the electrical characteristics in detail. The fabricated reference sample Au/n-Si, Au/PVC/n-Si, and Au/(PVC: Sm2 O3 )/n-Si were named as Metal-Semiconductor (MS), Metal-Polymer-Semiconductor (MPS1), and MPS2 structure, respectively. The procedure of providing Sm2 O3 is also described in detail. XRD, FE-SEM), EDX, and UV–vis spectroscopy, have been applied to study the mean crystalline structure, morphology, elemental characterization, and optical features of the provided Sm2 O3 . After structural analysis, the I-V features were performed in the wide range voltage (±3.5 V), and then, the basic electronic parameters of these structures were extracted from various techniques and compared with each other. Experimental results show that (PVC: Sm2 O3 ) leads to an increase of barrier-height (BH), rectifying-rate R R = I F / I R, shunt-resistance ( R sh ), and decrease of ideality-factor (n), surface-states ( N ss ). The RR of the MPS2 structure was found 117 times higher than the MS structure. The energy-dependent profile of N ss was also obtained from the forward bias I–V data by considering voltage-dependent n and BH. The plots reverse-bias ln I R − V R 0.5 characteristics show that Schottky-emission (SE) type conduction mechanism is effective for MS structure, whereas Poole-Frenkel-emission (PFE) is effective for MPS structures.