Abstract
In Phys. Rev. B 93, 140206(R) (2016), electron transport governed by nuclear tunneling was claimed to be a more realistic transport mechanism in semiconducting polymers as compared to Marcus and Miller-Abrahams transport mechanisms. The conclusion was based on the analysis of the field-dependent charge carrier mobility. We point out the unjustified simplification in the theoretical description of the electron transport governed by nuclear tunneling which caused such a conclusion.
Highlights
In a recent paper [1] the charge carrier mobility μ was studied experimentally in semiconducting polymers MEH-PPV and calculated for three different electron transport mechanisms
We argue that the above-mentioned conclusions in Ref. [1] were caused by an unjustified simplification of the theory for the electron transfer mechanism based on nuclear tunneling
The transfer rate for this mechanism was previously calculated by Asadi et al [2] in the form k
Summary
In a recent paper [1] the charge carrier mobility μ was studied experimentally in semiconducting polymers MEH-PPV and calculated for three different electron transport mechanisms. We argue that the above-mentioned conclusions in Ref. [1] were caused by an unjustified simplification of the theory for the electron transfer mechanism based on nuclear tunneling. The transfer rate for this mechanism was previously calculated by Asadi et al [2] in the form k
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