Irradiation effects and beam strength in polyurethane materials for laser elements

Kosyanchuk, L. F.; Козак, Н. В.; Babkina, N. V.; Bezrodna, T.; Roshchin, O.; Безродный, В. И.; Antonenko, O.I.; Brovko, О.O.

doi:10.1016/j.optmat.2018.09.010

Cited by 7 publications

(2 citation statements)

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“…Efficiencies have been largely improved in polymeric optoelectronic devices with the development of new materials, new designs, and new processing techniques [4,5,6]. Deep insights into the physics, new designs of the device structures, and surface/interfacial processing of the thin-film polymer are always within the important research topics [7,8,9,10,11]. Photophysical and photoelectronic properties of polymer semiconductors can be tailored by changing the fabrication process [7,8,9] or the decorative strategies, such as the annealing processes, the additive solvent treatment, or the laser irradiation [10,11,12].…”

Section: Introductionmentioning

confidence: 99%

“…Deep insights into the physics, new designs of the device structures, and surface/interfacial processing of the thin-film polymer are always within the important research topics [7,8,9,10,11]. Photophysical and photoelectronic properties of polymer semiconductors can be tailored by changing the fabrication process [7,8,9] or the decorative strategies, such as the annealing processes, the additive solvent treatment, or the laser irradiation [10,11,12]. Poly(9,9-dioctylfluorene- co -benzothiadiazole) (F8BT) is a widely investigated and applied light-emitting polymer with excellent efficiency and stability.…”

Section: Introductionmentioning

confidence: 99%

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Femtosecond Optical Annealing Induced Polymer Melting and Formation of Solid Droplets

Yang

Huang

2019

Polymers

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Interaction between femtosecond laser pulses with polymeric thin films induced transient optical annealing of the polymer molecules. Melting of the polymer films took place during the transient annealing process, so that a solid-liquid-solid phase transition process was observed. Ultrafast cooling of the melting polymer produced solidified droplets. Microscopic and spectroscopic characterization revealed that the polymer molecules were rearranged with preferable H-aggregation to reach the lowest formation energy during the melting process. Intermolecular coupling was enhanced due to the modified molecular arrangement. This observation of melting of polymeric semiconductors due to the interaction with femtosecond light pulses is potentially important for better understanding laser-matter interactions and for exploring organic optoelectronic devices through special material processing.

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