
3: POLY(ARYLENE-V INYLENE)S 89
An improved photovoltaic performance was
observed when the zinc oxide nanoparticles were
stabilized with a semiconducting surfactant, i.e., 2-
(2-ethylhexyl)-1,3-dioxo-2,3-dihydro-1H-benzo[de]
isoquinoline-6,7-dicarboxylic acid (BQ). The incor-
poration of this surfactant increases the power
conversion efficiency. In contrast, a typical insulating
surfactant, such as oleic acid, decreases the efficiency
in such a device [145].
Alternating copolymers based on dithienyl benzo-
triazole and phenylene vinyl monomer were synthe-
sized by a Heck cross coupling method [146]. Broad
absorption bands of 300–77 nm were found with an
optical ...