TITLE:
An Approach to Equivalent Circuit Modelling of Inverted Organic Solar Cells
AUTHORS:
Nazmul Hossain, Sayantan Das, Terry L. Alford
KEYWORDS:
Inverted Organic Solar Cell, Equivalent Circuit, Fill-Factor, P3HT/PCBM, ETL, Yttrium-Doped ZnO
JOURNAL NAME:
Circuits and Systems,
Vol.7 No.8,
June
8,
2016
ABSTRACT: A low temperature sol-gel
process was used to fabricate zinc-oxide and yttrium-doped zinc oxide layers.
These zinc-oxide and yttrium-doped ZnO films were used as electron transport
layers in conjunction with P3HT and PC16BM type solar
cells. It was demonstrated that annealing and doping of electron transport
layer influenced the overall organic solar cells performance. Anneals of ~
150?C provided the highest device performance. Compared to the undoped zinc
oxide, the device with yttrium doped zinc oxide layers showed improved
efficiency by about 30%. Furthermore anequivalent
circuit was proposed to understand the connection between the electrical and
opticalcharacteristics of the
device. Comparisons between the simulated and experimental current-voltage(I-V)
curves displayed only a 1.2% variation between the curves. Clearly, our
experimental andsimulated
studies provide new insight on the equivalent circuit models for inverted
organic solar cells and further improvement on photovoltaic efficiency.