We report on the preparation and optical study of polymer heterostructures, such as Distributed Bragg Reflectors (DBR) and planar microcavities. We demonstrate high accuracy and reliability of a cheap spin-casting technique for the realization of large-size and flexible polymer DBR. A defect layer of emitting F8BT – designed and synthesized ad-hoc - is sandwiched between two DBRs to create a microcavity, or on top surface of the DBR to create a Bloch Surface Wave (BSW) structure.
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