Fundamental understanding of transport in high-quality organic single crystals for high-mobility applications (ORSIC-HIMA) [FWO-ARRS research collaboration].

In the last three decades, the mobility of organic materials used in organic transistors and circuits has steadily increased (see Fig.1), both for polymers and polycrystalline organic small molecules. This has yielded a broad range of new applications on foil, even up to the first organic 8-bit flexible and transparent microprocessor on foil, shown by imec and the KULeuven in 2011. However, the performance of these applications remains limited, e.g. the maximum clock frequency of the organic microprocessor remains 40Hz, due to the low mobility of these materials. It is already  nown for quite some time that single crystals of organic molecules enable much higher mobilities, but the close integration in circuits on foil was not possible until recently new methods have been introduced  We want to improve the performance of state-of-the-art demonstrators using organic semiconductors by a factor 10 employing single crystal organic semiconductors, but this requires the fundamental understanding of the transport properties of organic single crystals. This fundamental understanding is the object of this FWO-SRA collaboration, as it brings together the expertise in transport measurements (Nova Gorica) with the expertise of organic material growth (KULeuven and imec).