TY - JOUR
T1 - The effect of cadmium impurities in the (PVP–TeO2) interlayer in Al/p-Si (MS) Schottky barrier diodes (SBDs)
T2 - Exploring its electrophysical parameters
AU - Pirgholi-Givi, Gholamreza
AU - Altındal, Şemsettin
AU - Shahedi Asl, Mehdi
AU - Sabahi Namini, Abbas
AU - Farazin, Javid
AU - Azizian-Kalandaragh, Yashar
N1 - Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2021/3/1
Y1 - 2021/3/1
N2 - Al/p-Si (MS) type SBDs with/without (PVP–TeO2: Cd) interfacial layer was fabricated in the same conditions to investigate Cd impurities on its electrophysical parameters using I–V and Z-f measurements. Structural and optical properties of the (TeO2: Cd) nanostructures were characterized using XRD, FE-SEM, EDX, and UV–Vis techniques. The existence of Cd impurities and formation of TeO2 nanostructures was confirmed by EDX and XRD techniques, respectively. The values of barrier height (ΦB0), ideality factor (n), series resistance (Rs) were derived from the IF-VF data as 0.65 eV, 5.60, 4.80 kΩ for MS and 0.54 eV, 4.83, 0.27 kΩ for MPS SBD, respectively. The energy-dependent profile of surface states (Nss) was also extracted from IF-VF data by assuming voltage-dependent of BH and n. The existence of impurities in the interlayer leads to a decrease of n, Rs, ΦB0, but an increase of leakage current, rectifying ratio (IF/IR), and conductivity.
AB - Al/p-Si (MS) type SBDs with/without (PVP–TeO2: Cd) interfacial layer was fabricated in the same conditions to investigate Cd impurities on its electrophysical parameters using I–V and Z-f measurements. Structural and optical properties of the (TeO2: Cd) nanostructures were characterized using XRD, FE-SEM, EDX, and UV–Vis techniques. The existence of Cd impurities and formation of TeO2 nanostructures was confirmed by EDX and XRD techniques, respectively. The values of barrier height (ΦB0), ideality factor (n), series resistance (Rs) were derived from the IF-VF data as 0.65 eV, 5.60, 4.80 kΩ for MS and 0.54 eV, 4.83, 0.27 kΩ for MPS SBD, respectively. The energy-dependent profile of surface states (Nss) was also extracted from IF-VF data by assuming voltage-dependent of BH and n. The existence of impurities in the interlayer leads to a decrease of n, Rs, ΦB0, but an increase of leakage current, rectifying ratio (IF/IR), and conductivity.
KW - A comparison of Al/p-Si (MS) and Al/(PVP–TeO: Cd)/p-Si (MPS) SBDs
KW - Cd impurities in (PVP–TeO) interlayer
KW - Electrical and dielectric characteristics
KW - I–V and C/G-f
UR - http://www.scopus.com/inward/record.url?scp=85097477439&partnerID=8YFLogxK
U2 - 10.1016/j.physb.2020.412617
DO - 10.1016/j.physb.2020.412617
M3 - Article
AN - SCOPUS:85097477439
SN - 0921-4526
VL - 604
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
M1 - 412617
ER -