Probing Charge Carrier Movement in Organic Semiconductor Thin Films via Nanowire Conductance Spectroscopy
Mykhailo Klymenko, Jesse A Vaitkus, Jared H Cole
ACS APPLIED ELECTRONIC MATERIALS | AMER CHEMICAL SOC | Published : 2019
Understanding movement of charge carriers within organic semiconductor films is crucial for applications in photovoltaics and flexible electronics. This study theoretically investigates the use silicon nanowires for probing spatial and temporal distribution of charge carriers in organic thin films and estimates the sensitivity of electrical conductance of silicon nanowires to changes of charge states within an organic semiconductor physisorbed on the surface of the nanowire. Elastic scattering caused by motion of charge carriers near the nanowire modifies the mean-free path for backscattering of electrons propagating within it, which we have mathematically expressed in terms of the causal Gr..View full abstract
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Awarded by Australian Research Council
M.K. thanks Barbara Fresch and Francoise Remade for fruitful discussions on DFT computations. M.K. and J.C. thank Pegah Maasoumi for discussions on relevant technological advances. The authors acknowledge support of the Australian Research Council through Grant CE170100026. This research was undertaken with the assistance of resources and services from the National Computational Infrastructure, which is supported by the Australian Government.