On the some electrical properties of the non-ideal PPy/p-Si/Al structure


Aydoğan Ş., Sağlam M., TÜRÜT A.

POLYMER, cilt.46, ss.10982-10988, 2005 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 46 Konu: 24
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1016/j.polymer.2005.09.038
  • Dergi Adı: POLYMER
  • Sayfa Sayısı: ss.10982-10988

Özet

The electrical analysis of the PPy/p-Si structure has been investigated by means of I-V, C-V and C-f measurements. The diode ideality factor and the barrier height have been obtained to be n = 1.78 and Phi(b) = 0.69 eV by applying a thermionic emission theory, respectively. At high current densities in the forward direction, the series resistance effect has been observed. In general, the barrier height obtained from C-V data is greater than obtained from the I-V. This has been explained by introducing a spatial distribution of barrier heights (BHs) due to barrier height inhomogeneities that present at the PPy/p-Si interface. The C-f measurements of the structure have been performed at various biases and it has been seen that they have a good agreement between experimental and theoretical values. The interface state density N-ss and relaxation time T of the structure have been determined from the C-f characteristics. (c) 2005 Elsevier Ltd. All rights reserved.