Browsing by Author "Tan S."

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    Comparative investigation on the effects of organic and inorganic interlayers in Au/n-GaAs Schottky diodes
    (2017-03-01) Tan S.; Tecimer H.; Cicek O.
    There have been many attempts on Schottky barrier diodes (SBDs) to improve the quality of metal-semiconductor (MS) structure and control permanently the barrier height (BH) by utilizing an organic or inorganic interfacial layer instead of widely used SiO2. The organic polymer or inorganic insulator interfacial layer insertion to the M/S interface converts the structure into the metal-polymer-semiconductor (MPS) or metal-insulator-semiconductor (MIS). The reliability and performance of the MIS/MPS-type SBDs is drastically affected by the interface layer quality and also its thickness. In this paper, MS structure forms as Au/n-GaAs are consecutively used with an organic interfacial layer polyvinyl alcohol and inorganic interfacial layer zinc oxide to compare their effects on the electrical characteristics of SBDs under distinct illumination levels. Consequently, the current-voltage characteristics provide us to reveal and compare the improvement and reliability of the MPS and MIS-type SBDs by also considering significant electrical parameters, such as ideality factor, apparent BH, and series resistance.
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    Scopus
    Morphological malformations of the sea bass (Dicentrarchus labrax): Comparison between hormone injected and noninjected fish
    (2015-01-01) Tan S.; Bulut M.; Bilen S.
    In this study, fertilization, hatching and deformation rate of the eggs, and larvae obtained from hormone injected (HI) and non-injected broodstock (NHI), were determined. In the experiment, no differences were observed in the groups' fertilization rates (p>0.05). Hatching rate was found higher in the HI group (p<0.05). During the experiment, malformations such as spinal fluid accumulation, saddleback, air-bladder deformation and general body deformations were observed in both groups. For the NHI group, saddleback rate was found 5.13±0.55 %, air-bladder deformation rate was found 1.43±0.13%, spinal fluid accumulation was found 2.33±1.33% and general body deformation rate was found 3.76±0.23 % (p<0.05). As a result, it was determined that the deformation rate increased with hormone injection (p<0.05).