Organic materials, and in particular, poly(p-phenylene vinylene)s, are being investigated for solid state neutron
detection. Semiconducting organics can offer direct detection because of high resistivity, high dielectric strength, natural
gamma discrimination due to low Z, and room temperature operation. However, the effective charge collection is
dependant on several material processing variables, including solvent choice and concentration, substrate, deposition
method and conditions, post-deposition processing, and other factors, all of which can influence the local and bulk order
of the material. We have investigated the effects of processing variables on the material order through infrared
dichroism. The charge collection of the device was measured with visible laser excitation, and related to the order.
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