Photovoltaic and impedance spectroscopy analysis of p-n like junction for dye sensitized solar cell

Yahia I. S., HAFEZ H. S., Yakuphanoglu F., Şenkal B. F., MOTTALEB M. S. A. A.

SYNTHETIC METALS, vol.161, pp.1299-1305, 2011 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 161
  • Publication Date: 2011
  • Doi Number: 10.1016/j.synthmet.2011.04.027
  • Journal Name: SYNTHETIC METALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1299-1305
  • Istanbul Technical University Affiliated: Yes

Abstract

A dye-sensitized solar cell based on nanostructure TiO(2) and PCBM:P3HT blend was fabricated and the photovoltaic and impedance spectroscopy properties of the solar cell were investigated. The solar cell gives a short circuit current density of 0.75 mA/cm(2) and an open circuit voltage of 0.60 V under AM1.5. The photovoltage of the solar cell was greatly enhanced by PCBM:P3HT blend. The capacitance-voltage, the conductance-voltage, the series resistances-voltage characteristics of the solar cell were measured in a wide range of frequency for the first time for DSSC applications. The capacitance-voltage shows a behavior from the positive to negative capacitance due to injection of electrons from the FTO electrode into TiO(2). It is evaluated that the photovoltaic performance of the dye-sensitized solar cell can be improved using various organic semiconductors. (C) 2011 Elsevier B.V. All rights reserved.