Electronic and thermoelectric properties of a single pyrene molecule

Mutier, Mohammed N.; Al-Badry, Lafy F.

doi:10.1016/j.cjph.2019.11.025

Cited by 5 publications

(1 citation statement)

References 35 publications

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“…Conjugated organic molecules have been widely investigated due to their interesting transport properties and promising applications as active layer in organic photovoltaics (OPVs), organic field effect transistors (OFETs), organic light-emitting diodes (OLEDs) and sensors [1,2]. Columnar liquid crystals are attractive due to their solution processability and their self-organization in highly anisotropic supramolecular architectures, which favors the mainly one-dimensional migration of charge carriers Scheme 1: Molecular structures of compounds 1 and 2.…”

Section: Introductionmentioning

confidence: 99%

Charge carrier transport in perylene-based and pyrene-based columnar liquid crystals

Alves,

Bernardino,

Stadtlober

et al. 2023

Beilstein J. Org. Chem.

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Electron and hole transport characteristics were evaluated for perylene-based and pyrene-based compounds using electron-only and hole-only devices. The perylene presented a columnar hexagonal liquid crystal phase at room temperature with strong molecular π-stacking inside the columns. The pyrene crystallizes bellow 166 °C, preserving the close-packed columnar rectangular structure of the mesophase. Photophysical analysis and numerical calculations assisted the interpretation of positive and negative charge carrier mobilities obtained from fitting the space charge limited regime of current vs voltage curves. The pyrene-based material demonstrated an electron mobility two orders of magnitude higher than the perylene one, indicating the potential of this class of materials as electron transporting layer.

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Section: Introductionmentioning

confidence: 99%