Characterization of Alternating Polyfluorene Green-6 and [6,6]-Phenyl C61-Butyric Acid Methyl Ester(Pcbm) based Bulk Heterojunction Solar Cell
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Date
2006-07
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Addis Ababa University
Abstract
Photovoltaic device based on blend of alternating poly
uorene green-6 (APFO Green-
6) and [6,6]-phenyl C61-butyric acid methyl ester(PCBM) in a sandwich structure of
ITO/PEDOT-PSS/APFO Green-6:PCBM/Al was fabricated. The device was characterized
by analyzing the current density-voltage measurements under dark and
illumination as well as by impedance spectroscopy. The observed J-V curve under
dark agree well with the trap-controlled space charge limited transport theory. The
main solar cell parameters recorded at room temperature under 80mA/cm2 white
light intensity are: VOC = 547mV, JSC = 0.314mA/cm2, with power conversion ef-
ciency 0.107 %, and ll factor, of 0.5. The complex impedance analysis exhibits a
bias voltage dependent whose Cole-Cole plot is a single semicircle. This is modelled
by one parallel RC circuit, usually obtained from metal-semiconductor(MS) device
Description
Keywords
Bulk Heterojunction Solar Cell