What is it about?
This research focuses on the study of polymer thin films by combining two methods in the same system, one exploring charge accumulation by laser-thermal stimuli and the other measuring optically excited currents. The goal is to understand space charge formation and photocurrent-associated energies in polymers. The paper explains the technical principles of both methods, the combined system and typical results.
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Why is it important?
The proposed system allows the study of trap population and detrapping mechanisms in thin polymer by means of a unique setup. Results on a 12 µm-thick polyethylene naphthalate (PEN) film reveal changes in charge accumulation after light exposure, which may be related to specific electronic transitions causing charge detrapping.
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This page is a summary of: Measurement setup to simultaneously explore the location and energy of trapped charges in thin polymer films, Review of Scientific Instruments, August 2023, American Institute of Physics,
DOI: 10.1063/5.0159025.
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