Narrower bands with better charge transport: the counterintuitive behavior of semiconducting copolymers.

Fornari, Rocco P; Troisi, Alessandro · Adv Mater · 2014

basic_science · Level V

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Abstract

The narrower bands formed by donor-acceptor polymers are not detrimental to transport, as the reduced electronic coupling along the chain is more than compensated by a reduced activation energy for transport. These polymers are less sensitive to the conformational disorder of the chain as long as the bandwidth is larger than a threshold.