Abstract
Organic thin films with tunable optical properties underlie optical sensors and optoelectronic devices. Here we report on the synthesis of thin films based on thiophene molecular crystals (MC) by dripping method on temperature-controlled substrates with the use of UV radiation to control the photoluminescence (PL) spectra of the films. We achieve 80 nm red shift of the photoluminescence without degradation of thiophene-based MCs. The obtained scalable organic-based thin films with variable PL can be used as optical sensors of UV light, as well as planar substrates for imaging.
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