期刊
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
卷 249, 期 9, 页码 1655-1676出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssb.201248143
关键词
organic semiconductors; physics of charge transport; polarons
资金
- EPSRC [EP/G051399/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G051399/1] Funding Source: researchfish
This review is focused on understanding of the charge-transport physics of high-mobility organic semiconductors at a molecular level. We review recent high-mobility small-molecule and conjugated polymer materials with a focus on crystalline materials that have been able to exceed mobilities of 0.51?cm2/V?s. We discuss some of the main, competing factors that govern charge transport in these materials and present theoretical approaches that have been developed to describe systems in which moderately strong intermolecular electronic interactions and strong electronphonon interactions are present. Finally, we review recent experimental results that have aimed to address the important question of whether at room-temperature charge carriers in these high-mobility organic semiconductors are in fact simply extended Bloch electrons that undergo occasional scattering processes or are localized on individual molecules and move by hopping.
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