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RISS 인기검색어
- 검색키워드
- 저자 : U. Aydemir (검색결과 2 건)
- 무료
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S. Demirezen,Z. Sönmez,U. Aydemir,Ş. Altındal 한국물리학회 2012 Current Applied Physics Vol.12 No.1
The forward and reverse bias currentevoltage (IeV), capacitanceevoltage (CeV) and conductance evoltage (G/ueV) characteristics of the Au/PVA (Bi-doped)/n-Si Schottky barrier diodes (SBDs) have been investigated at room temperature by taking the interface states (Nss) and series resistance (Rs) effects into account. The voltage dependent profiles of resistance (Ri) were obtained from both the IeV and C/GeV measurements by using Ohm’s Law and Nicollian methods. The obtained values of Ri with agreement each other especially at sufficiently high bias voltages which correspond the value of Rs of the diode. Therefore, the energy density distribution profile of Nss was obtained from the forward bias IeV data taking the bias dependence of the effective barrier height (BH) Fe and Rs into account. The high value of ideality factor (n) was attributed to high density of Nss and interfacial polymer layer at metal/semiconductor (M/S) interface. In order to examine the frequency dependence of some of the electrical parameters such as doping donor concentration (ND), Fe, Rs and Nss values, CeV and G/ueV measurements of the diode were performed at room temperature in the frequency range of 50 kHze5 MHz. Experimental results confirmed that the Nss, Rs and interfacial layer are important parameters that influence electrical characteristics of SBD. The forward and reverse bias currentevoltage (IeV), capacitanceevoltage (CeV) and conductance evoltage (G/ueV) characteristics of the Au/PVA (Bi-doped)/n-Si Schottky barrier diodes (SBDs) have been investigated at room temperature by taking the interface states (Nss) and series resistance (Rs) effects into account. The voltage dependent profiles of resistance (Ri) were obtained from both the IeV and C/GeV measurements by using Ohm’s Law and Nicollian methods. The obtained values of Ri with agreement each other especially at sufficiently high bias voltages which correspond the value of Rs of the diode. Therefore, the energy density distribution profile of Nss was obtained from the forward bias IeV data taking the bias dependence of the effective barrier height (BH) Fe and Rs into account. The high value of ideality factor (n) was attributed to high density of Nss and interfacial polymer layer at metal/semiconductor (M/S) interface. In order to examine the frequency dependence of some of the electrical parameters such as doping donor concentration (ND), Fe, Rs and Nss values, CeV and G/ueV measurements of the diode were performed at room temperature in the frequency range of 50 kHze5 MHz. Experimental results confirmed that the Nss, Rs and interfacial layer are important parameters that influence electrical characteristics of SBD.
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Boga, M.,Yurtseven, S.,Kilic, U.,Aydemir, S.,Polat, T. Asian Australasian Association of Animal Productio 2014 Animal Bioscience Vol.27 No.6
The aim of this study was to determine the nutritive value of some legume species in salt-affected soils of South-East Anatolian region using chemical composition and in vitro gas production kinetics. In this study, Lotus corniculatus, Trifolium alexandrinum, Medicago sativa were sown and tested in four different locations. A 3 by 4 factorial design with 3 legume species and 4 salt levels (non salty electrical conductivity (EC)<4 dS/m; low salt: 4 dS/m>EC<8 dS/m, medium saline: 8 dS/m>EC<16 dS/m and high salt: 16 dS/m>EC) was used in the study. Results indicated that salinity and plants had no significant effect on ash and ether extract. Dry matter (DM), acid detergent fiber, digestible dry matter, dry matter intake (DMI) were affected by plant, salinity and plant${\times}$salinity interaction. On the other hand neutral detergent fiber, relative feed value (RFV), and DMI were affected by salinity and plant${\times}$salinity interaction. Mineral contents were affected by plant species, salinity and salinity${\times}$plants interactions. In vitro gas production, their kinetics and estimated parameters such as were not affected by salinity whereas the gas production up to 48 h, organic matter digestibility, metabolizable energy (ME), and net energy lactation ($NE_L$) were affected by plant and plant${\times}$salt interaction. Generally RFVs of all species ranged from 120 to 210 and were quite satisfactory in salty conditions. Current results show that the feed value of Medicago sativa is higher compared to Lotus corniculatus and Trifolium alexandrinum.
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