Asymmetry Matters: Structure Elucidation and Application Potential of Solution-Processed Monoalkylated BTBT Thin Films

Hawly T, Johnson M, Zhao B, Wu M, Späth A, Streller F, Nickles Jäkel H, Halik M, Spiecker E, Watts B, Nefedov A, Fink R (2022)

Publication Type: Journal article

Publication year: 2022

Journal

ACS Applied Electronic Materials ACS Publications

Book Volume: 4

Pages Range: 5914-5921

Journal Issue: 12

DOI: 10.1021/acsaelm.2c01095

Abstract

Two-dimensionally (2D) extended thin films of p-type organic semiconductor C13-BTBT (BTBT = [1]benzothieno[3,2-b]-[1]benzothiophene) were fabricated via self-controlled growth at the liquid-liquid interface. Depicting a compound class originally developed for further functionalization and subsequent realization of self-assembled monolayers (SAMs), the potent BTBT core unit commonly excels in high-quality structure formation as well as charge-transport characteristics. Utilizing a manifold spectromicroscopic toolbox, we observe extraordinarily crystalline C13-BTBT films with an upright standing configuration of the backbone unit accounting for superior intermolecular orbital overlap. The well-defined morphology and internal structure of the film are being underpinned by charge-transport parameters that are in the range of comparable organic electronic devices based on bisubstituted BTBT films from the same processing technique. The inherently favorable membrane-like bilayer molecular arrangement is confirmed by unambiguous representation of the unit cell as derived from electron tomography.

Authors with CRIS profile

Tim Hawly Lehrstuhl für Physikalische Chemie II Manuel Johnson Lehrstuhl für Physikalische Chemie II Baolin Zhao Lehrstuhl für Werkstoffwissenschaften (Polymerwerkstoffe) Mingjian Wu Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Andreas Späth Lehrstuhl für Physikalische Chemie II Fabian Streller Lehrstuhl für Physikalische Chemie II Hannah Nickles Jäkel Lehrstuhl für Physikalische Chemie II Marcus Halik Professur für Werkstoffwissenschaften (Polymerwerkstoffe) Erdmann Spiecker Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Rainer Fink Professur für Physikalische Chemie

Additional Organisation(s)

Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM) Graduiertenkolleg 1896/2 In situ Mikroskopie mit Elektronen, Röntgenstrahlen und Rastersonden

Involved external institutions

Karlsruhe Institute of Technology (KIT) DE Germany (DE) Paul Scherrer Institute (PSI) CH Switzerland (CH)

How to cite

APA:

Hawly, T., Johnson, M., Zhao, B., Wu, M., Späth, A., Streller, F.,... Fink, R. (2022). Asymmetry Matters: Structure Elucidation and Application Potential of Solution-Processed Monoalkylated BTBT Thin Films. ACS Applied Electronic Materials, 4(12), 5914-5921. https://doi.org/10.1021/acsaelm.2c01095

MLA:

Hawly, Tim, et al. "Asymmetry Matters: Structure Elucidation and Application Potential of Solution-Processed Monoalkylated BTBT Thin Films." ACS Applied Electronic Materials 4.12 (2022): 5914-5921.

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