All-organic and fully-printed semitransparent photodetectors based on narrow bandgap conjugated molecules.

Pace, Giuseppina; Grimoldi, Andrea; Natali, Dario; Sampietro, Marco; Coughlin, Jessica E; Bazan, Guillermo C; Caironi, Mario · Adv Mater · 2014

basic_science · Level V

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Abstract

All-organic, fully-printed and semitransparent photodetectors with a broad wavelength band response, based on a ternary blend comprising narrow band-gap small molecules, are demonstrated. The ternary blend with a semiconducting polymer allows for the optimal printing of small molecules, suppressing strong phase segregation, and uncontrolled crystallization. The insertion of a suitable interlayer enables the adoption of polymer, transparent, top and bottom printed electrodes, thus making light detection possible from both device sides.