The effect of gamma ırradiation on electrical characteristics of au/polyvinyl alcohol (co, zn-doped)/n-si schottky barrier diodes
Yükleniyor...
Tarih
2010
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wiley-Blackwell
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
To show the effect of gamma radiation, Au/Polyvinyl Alcohol (Co, Zn-doped)/n-Si Schottky barrier diodes (SBDs) were exposed to (60)Co gamma-ray source at room temperature. These structures were investigated by using current-voltage (I-V), capacitance-voltage (C-V), and conductance-voltage (G/omega-V) measurement methods before and after irradiation. The C-V and G omega-V measurements were carried out at 1 MHz. The density of interface states (N(ss)) as a function of E(c)-E(ss) was obtained from the forward bias I-V data by taking into account the bias dependence effective barrier height (Phi(e)) and series resistance (R(s)) of device at room temperature. Experimental results show that the values of ideality factor (n), R(s) and N(ss) increased after gamma irradiation. It was found to degrade the reverse leakage current with radiation whereas its effect on the forward I-V characteristics was negligible. The results show that main effect of the radiation is the generation of N(ss) with energy level within the forbidden band gap of Si between polymer and semiconductor. In addition, the values of R(s) were determined from Cheung's method, and it was seen that these values increased with radiation effect. As seen I-V and C-V characteristics, the main electrical parameters such as ideality factor (n), R(s), N(ss) were strongly influenced with the presence of radiation. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 118: 596-603, 2010
Açıklama
Anahtar Kelimeler
Au/polyvinyl Alcohol (Co, Zn-doped)/n-Si schottky Barrier Diodes (SBDs), Radiation Effects, Interface States, Series Resistance
Kaynak
Journal of Applied Polymer Science
WoS Q Değeri
N/A
Scopus Q Değeri
Q2
Cilt
118
Sayı
1
