Abstract
In this work, we have reported an enhancement of the photoluminescence intensity in Poly(3-thiopheneacetic acid), PTAA, films irradiated by laser in air. This effect depends on the laser intensity, exposure time and sample thickness. It was observed an increase of the luminescence intensity up to 110% without any significant shift in PL peak position. Our results suggest that a partial degradation process occurs in the sample, which confines the charge carriers in a narrower region of the film increasing the probability of radioactive decay.
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