ORGANIC SEMICONDUCTING BLEND

A blend for preparing a semiconducting layer an organic electronic device comprises a polymer, a first non-polymeric semiconductor, a second non-polymeric semiconductor and a third non-polymeric semiconductor. The blend enables higher concentration solutions of semiconductor and a broader solution processing window as compared to blends comprising one polymer and one non-polymeric semiconductor. For example, a blend comprising F8-TFB and three different substituted benzothiophene derivatives shows three-fold higher average saturation mobility in OTFTs as compared to a blend of one polymer and one of these benzo thiophene derivatives and consistent peak saturation mobilities after drying at 60° C., 80° C. and 100° C. even after a 2 minute delay.