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The introduction of solvent to a polymer film, which is generally believed to have a negative influence on device performance, is an effective way for improving device performances of polymer organic field‐effect transistors (OFETs) if the treatment is combined with a re‐annealing process and film‐thickness optimization. The so‐called solvent‐assisted re‐annealing offers a simple and novel approach...
We investigate in detail the process of CO2-laser writing of long-period fiber gratings (LPFGs) in unannealed and annealed boron-doped fiber samples by using repeated scanning of CO2-laser pulses. We find that the writing dynamics depends strongly on the CO2-laser energy density and the annealing temperature of the fiber. Our results from analyzing the writing dynamics reveal the relative importance...
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