The choice of solvent and solvent additive has been shown to affect efficiency of organic electronic devices. To gain a basic understanding of the role of solvents in influencing overall device performance, we present a comparative study on the physical properties of donor-acceptor mixtures in different solvents. Investigations have been carried out for P3HT (poly(3-hexylthiophene)), PTB7 (polythieno[3,4-b]-thiophene-co-benzodithiophene), PC<sub>61</sub>BM (C61-butyric acid methyl ester, and PB<sub>71</sub>BM (C71-butyric acid methyl ester). The physical properties reported are based on current-voltage characterizations, UV-Vis spectroscopy, and cyclic voltammetry measurements of the organic films. The solvents used to prepare the organic films are chlorobenzene and 1,2-dichlorobenzene, with and without 1,8-diiodooctane as an additive. In addition, the surface tension of the different solutions were studied utilizing an optical tensiometer to gain insights on solvent-material interactions.

Influence of various solvents on the physical properties of materials for organic electronic devices

249th National Meeting (2015)

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