Design, optimization, and printing of large-area electronics.

Relevant publications:

  1. Identifying orthogonal solvents for solution processed organic transistors Abhinav M Gaikwad, Yasser Khan, Aminy E Ostfeld, Shishir Pandya, Sameer Abraham, and Ana Claudia Arias Organic Electronics, 2016 30, Solvents visualization program is available in the Downloads section:

    Identification of solvents for dissolving polymer dielectrics and organic semiconductors is necessary for the fabrication of solution-processed organic field effect transistors (OFETs). In addition to solubility and printability of a solvent, orthogonality is particularly important when forming multilayer structure from solutions. Currently, the process of finding orthogonal solvents is empirical, and based on trial-and-error experimental methods. In this paper, we present a methodology for identifying orthogonal solvents for solution-processed organic devices. We study the accuracy of Hildebrand and Hansen solubility theories for building solubility boundaries for organic semiconductor (Poly(2,5-bis(3-hexadecylthiophen-2-yl)thieno[3,2-b]thiophene (PBTTT) and polymer dielectrics (Poly(methyl methacrylate) (PMMA), Polystyrene (PS)). The Hansen solubility sphere for the organic semiconductor and polymer gate dielectrics are analyzed to identify solvents that dissolve PMMA and PS, but are orthogonal to PBTTT. Top gate/bottom contact PBTTT based OFETs are fabricated with PMMA gate dielectric processed with solvents that are orthogonal and non-orthogonal to PBTTT. The non-orthogonal solvents swell the semiconductor layer and increase their surface roughness.

    @article{gaikwad2016identifying, title = {Identifying orthogonal solvents for solution processed organic transistors}, author = {Gaikwad, Abhinav M and Khan, Yasser and Ostfeld, Aminy E and Pandya, Shishir and Abraham, Sameer and Arias, Ana Claudia}, journal = {Organic Electronics}, volume = {30}, pages = {18--29}, year = {2016}, publisher = {Elsevier}, url = {}, doi = {10.1016/j.orgel.2015.12.008}, thumbnail = {gaikwad2016identifying.png}, pdf = {gaikwad2016identifying.pdf}, note = {Solvents visualization program is available in the Downloads section:} }


Last modified: 2017-07-19