many thanks for sharing this very interestig technical question with the RG community. In this context please have a look at the following potentially useful article which might help you in your analysis:
Towards Flexible All-Carbon Electronics: Flexible Organic Field-Effect Transistors and Inverter Circuits Using Solution-Processed All-Graphene Source/Drain/Gate Electrodes
Article Towards Flexible All-Carbon Electronics: Flexible Organic Fi...
Luckily this paper is freely accessible as public full text right here on RG. Also please see the following Open Access article:
Picene and PTCDI based solution processable ambipolar OFETs
Thank you for sending me the information about solution processable electrodes for organic field effect transistors fabrication. The papers you shared with me had plenty of things to try for fully solution processable OFETs for gas sensing applications.