Admittance Spectroscopy in the Measurement of Hole Mobility in Organic Photovoltaic Cell

摘要

Carrier mobility is one of the predominant factors that affects the performance of Organic Photovoltaic Cells(OPVs). This paper investigates the transport properties of positive charge carriers in a device which consists of ITO/Mo03/P3HT:PCBM/Al. The hole mobility is calculated using Impedance Spectroscopy(IS) method. The mobility obtained 1.131x10~(-4)cm~2V~(-1)S~(-1) is in good agreement with that of the mobility computed with the Space Charge Limited Current (SCLC) method. The importance of impedance analysis is also investigated.