| 摘要 |
The invention provides an ink comprising a blend of a polymer material and a small molecule semiconductor material dissolved or dispersed in a solvent, said blend comprising at least 70% by weight of said polymer material and wherein the ink concentration is at least 0.4% w/v. The polymer material is preferably TFB [9,9'-dioctylfluorene-co-N-(4-butylphenyl)-diphenylamine]n, and said small molecule semiconductor material preferably has the following formula: wherein X11 is a group of formula CnH2n+1 wherein n is an integer of from 4 to 16.
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