ИСТИНА

Further progress in organic electronics demands new highly efficient organic semiconductor materials. So far, however, band-like charge transport with high mobilities has been reliably demonstrated only in a few organic semiconductors (OSs), and development of efficient methods for search of high-mobility materials among a plethora of OSs remains extremely important. We suggest a spectroscopic method for screening of OSs with efficient charge transport, to be used prior to time-consuming device measurements. The method relies upon a physical relationship between the low-frequency Raman spectrum and the non-local electron-phonon interaction and dynamic disorder limiting charge-carrier mobility in OS materials. Experimental benchmarking of the physics-inspired spectroscopic descriptor for charge-carrier mobility estimation resulting from this relationship reveals a strong correlation with device mobilities reported for various OSs. We thus anticipate that the spectroscopic method based on this descriptor can serve as a powerful search tool for revealing new high-mobility OS materials.