A Novel Mitigation Mechanism for Photo-Induced Trapping in an Anthradithiophene Derivative Using Additives

Iyad Nasrallah, Mahesh Kumar Ravva, Katharina Broch, Jiri Novak, John Armitage, Guillaume Schweicher, Aditya Sadhanala, John E. Anthony, Jean-Luc Bredas, Henning Sirringhaus

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4 Scopus citations


A novel trap mitigation mechanism using molecular additives, which relieves a characteristic early turn-on voltage in a high-mobility p-type acene-based small-molecule organic semiconductor, when processed from hydrous solvents, is reported. The early turn-on voltage is attributed to photo-induced trapping, and additive incorporation is found to be very effective in suppressing this effect. Remarkably, the molecular additive does not disturb the charge transport properties of the small-molecule semiconductor, but rather intercalates in the crystal structure. This novel technique allows for the solution-processing of small molecular semiconductors from hydrous solvents, greatly simplifying manufacturing processes for large-area electronics. Along with various electric and spectroscopic characterization techniques, simulations have given a deeper insight into the trap mitigation effect induced by the additive.
Original languageEnglish (US)
Pages (from-to)2000250
JournalAdvanced Electronic Materials
StatePublished - Aug 14 2020

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: I.N. acknowledges the financial support from FlexEnable Ltd., as well as the EPSRC Centre for Innovative Manufacturing in Large-Area Electronics (CIMLAE, EP/K03099X/1). G.S. acknowledges postdoctoral fellowship support from the Wiener-Anspach Foundation and The Leverhulme Trust (Early Career Fellowship supported by the Isaac Newton Trust). J.N. acknowledges support from MEYS Czech Republic, project CEITEC 2020 (Grant No. LQ1601).


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