Spectroscopic Assessment of Charge‐Carrier Mobility in Crystalline Organic Semiconductors
Source abstract
Abstract
Abstract Further progress in organic electronics demands new highly efficient organic semiconductor (OS) materials. So far, however, band‐like charge transport with high mobilities has been reliably demonstrated only in a few OSs, and development of efficient methods for search of high‐mobility materials among a plethora of OSs remains extremely important. In the present work, a spectroscopic method is presented for screening of crystalline OSs with efficient charge transport, to be used prior to time‐consuming device measurements. Specifically, the work focuses on a physical rationale and an experimental benchmark of a correlation between the intensities of the low‐frequency Raman spectrum and the strength of dynamic disorder limiting the charge‐carrier mobility in a material. As a result, two physics‐inspired spectroscopic descriptors for charge‐carrier mobility estimation are suggested, both of which clearly correlate with device mobilities reported for various crystalline OSs. It is anticipated that the spectroscopic method based on these descriptors can serve as a powerful search tool for revealing new high‐mobility OS materials.
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Research context
OpenAlex topics: Organic Electronics and Photovoltaics · Conducting polymers and applications · Perovskite Materials and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Faculty of Physics Lomonosov Moscow State University Leninskie Gory 1/2 Moscow 119991 Russia
Institute of Spectroscopy of the Russian Academy of Sciences Fizicheskaya st. 5 Troitsk Moscow 108840 Russia
Faculty of Chemistry Perm State National Research University Bukireva st. 15 Perm 614990 Russia
Institute of Technical Chemistry Ural Branch of the Russian Academy of Sciences Ac. Koroleva st. 3 Perm 614013 Russia
Enikolopov Institute of Synthetic Polymeric Materials of the Russian Academy of Sciences Profsoyuznaya st. 70 Moscow 117393 Russia
Department of Quantum Chemistry Mendeleev University of Chemical Technology of Russia Miusskaya Square 9 Moscow 125047 Russia
Kurnakov Institute of General and Inorganic Chemistry Russian Academy of Sciences Leninskii prosp. 31 Moscow 119991 Russia
Shemyakin–Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences Miklukho‐Maklaya st. 16/10 Moscow 117997 Russia
Funding
Russian Science Foundation · Russian Foundation for Basic Research
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