Graphene oxide and poly(3-hexylthiophene) nanoscale interface interactions probed by KPFM

Poster presented at the NanoteC19 conference, International Conference on Carbon Nanosciene and Nanotechnology, 27th-30th August, Zaragoza (Spain).Graphene oxide (GO) is a chemically modified form of graphene containing many different types of oxygen functional groups on its basal plane and edges. Their presence imparts hydrophilicity and allows for ease of processing from water dispersions. We recently have shown that sheets of graphene oxide critically affect the aggregate structure of water dispersible nanoparticles P3HTNPs and thus the performance of optoelectronic thin film devices. In this work we elucidate the photogenerated charge tranfer dynamics of (P3HTNPs-GO) ensembles with defined aggregate structure across their interface by Kelvin Probe Force microscopy (KPFM).EU Horizon 2020 research and innovation programme Marie Sklodowska-Curie grant agreement No 642742. Project ENE2016-79282-C5-1-R. Grupo Reconocido DGA T03_17R.Peer reviewe