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        The effect of PVA (Bi2O3-doped) interfacial layer and series resistance on electrical characteristics of Au/n-Si (110) Schottky barrier diodes (SBDs)

        M. Gökçen,T. Tunç,Ş. Altındal,İ. Uslu 한국물리학회 2012 Current Applied Physics Vol.12 No.2

        Two types of Schottky Barrier Diodes (SBDs) with and without PVA (Bi2O3-doped) polymeric interfacial layer, were fabricated and measured at room temperature in order to investigate the effects of the PVA (Bi2O3-doped) interfacial layer on the main electrical parameters such as the ideality factor (n), zero-bias barrier height (FB0), series resistance (Rs) and interface-state density (Nss). Electrical parameters of these two diodes were calculated from the currentevoltage (IeV) characteristics and compared with each other. The values of FB0, n and Rs for SBDs without polymeric interfacial layer are 0.71 eV, 1.44 and 4775 U, respectively. The values of FB0, n and Rs for SBDs with PVA (Bi2O3-doped) polymeric interfacial layer are 0.74 eV, 3.49 and 10,030 U, respectively. For two SBDs, the energy density distribution profiles of interface states (Nss) were obtained from forward-bias IeV measurements by taking the bias dependence of Rs of these devices into account. The values of Nss obtained for the SBD with PVA (Bi2O3-doped)polymeric interfacial layer are smaller than those of the SBD without polymeric interfacial layer.

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