Table 1.
Devices were fabricated following four different processes. No prime tol and no prime oDCB are processes without adhesion promoter, using as solvent toluene or oDCB respectively. During Ti prime tol and Ti prime oDCB processes the samples were treated with adhesion promoter (Ti prime) before spin coating of poly(3-hexylthiophene) (P3HT) dissolved respectively in toluene or in 1,2-dichlorobenzene (oDCB).
| Process | Solvent | Adhesion Promoter |
|---|---|---|
| No prime tol | Tol | ✕ |
| Ti prime tol | Tol | ✓ |
| No prime oDCB | oDCB | ✕ |
| Ti prime oDCB | oDCB | ✓ |