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Abstract: Organic
photovoltaics (PV) have been extensively studied in recent years, as they have the
potential to provide a less expensive alternative to their inorganic counterparts. The
goal of this study is to maximize the power conversion efficiency of a well-studied bulk
heterojunction solar active layer blend,
poly(3-hexylthiophene):1-(3-methoxy-carbonyl)-propyl-1-phenyl-(6, 6) C61, ... read more(P3HT: PCBM),
by employing an array of different time-varying annealing temperature profiles in a
systematic manner. The Design of Experiments (DoE) methodology has enabled the
development of a statistical model that relates the response variable (in this case the
PV power conversion efficiency) to the experimental factors that were varied (final
annealing temperature, heating rate) and can be used to predict PV efficiency values at
different operating conditions. It has been found that higher power conversion
efficiencies can, in fact, be achieved through the use of time-varying annealing
profiles as compared to the efficiency obtained using a constant temperature
anneal.
Thesis (M.S.)--Tufts University,
2011.
Submitted to the Dept. of Chemical and
Biological Engineering.
Advisors: Matthew Panzer,
and Christos Georgakis.
Committee: Jeffrey
Hopwood.
Keywords: Engineering, Statistics, and
Alternative energy.read less
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