Melt-Processed Semiconducting Polymer Blends for Flexible Devices

Organic semiconductors continue to attract interest, being pertinent to flexible and printed electronics. While appropriate charge carrier mobilities of organic semiconductors are commonly achieved, a technical barrier to overcome still exists – specifically related to device production.

The production of such devices needs to be completed with high yields and at low cost, in a simple and robust process. Solution processing of organic electronics has been considered a promising approach; however, some issues continue to be a road-block for such a method, including the use of certain toxic solvents.

Recently, a collaborative team of researchers at Purdue University and the University of California Santa Cruz, have reported a strategy that overcomes the issue of solvent by employing a melt-processing technique.  The proposed technique uses polymer blends that exhibit high morphological stability and excellent performance once processed.

Moreover, thin film field-effect transistors exhibited reprocessability, whereby a semiconducting polymer was healed after cutting and exhibited good recovered charge mobility.

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