Improved performance of polymer photodetectors using indium–tin-oxide modified by phosphonic acid-based self-assembled monolayer treatment.

Highlights: [•] ITO modified by phosphonic acid-based self-assembled monolayer (SAM). [•] 1H,1H,2H,2H-Perfluorooctanephosphonic acid (FOPA) is used as SAM. [•] Lowering of the injection barrier at the ITO/organic layer interface. [•] Lowering of the contact resistance between ITO and the organic layer. [•] Polymer photodetector with FOPA exhibits high efficiency and high on/off ratio. [ABSTRACT FROM AUTHOR]