Interface properties and dopability of an organic semiconductor: TAPP-Br variable as molecule but inert in the condensed phase

Tzschoppe, Michael; Huck, Christian; Butkevich, Andrey; Günther, Benjamin; Ulrich, Constantin; Rose, Jan Niklas; Gade, Lutz H.; Pucci, Annemarie

doi:10.1039/d0tc01555e

Cited by 1 publication

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“…Organic semiconductors have captured much attention due to their outstanding electronic properties and high mechanical flexibility, which enable improved performance of OLEDs, organic field-effect transistors, or organic solar cells [1][2][3][4]. Polycyclic aromatic hydrocarbons (PAHs), as the important class of organic semiconductors, are applied in many areas, such as optoelectronics, electronics, and optical technology [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Improved Dielectric Properties and Grain Boundary Effect of Phenanthrene Under High Pressure

et al. 2021

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In situ impedance measurements, Raman measurements and theoretical calculations were performed to investigate the electrical transport and vibrational properties of polycrystalline phenanthrene. Two phase transitions were observed in the Raman spectra at 2.3 and 5.9 GPa, while phenanthrene transformed into an amorphous phase above 12.1 GPa. Three discontinuous changes in bulk and grain boundary resistance and relaxation frequency with pressure were attributed to the structural phase transitions. Grain boundaries were found to play a dominant role in the carrier transport process of phenanthrene. The dielectric performance of phenanthrene was effectively improved by pressure. A significant mismatch between Z″ and M″ peaks was observed, which was attributed to the localized electronic conduction in phenanthrene. Theoretical calculations showed that the intramolecular interactions were enhanced under compression. This study offers new insight into the electrical properties as well as grain boundary effect in organic semiconductors at high pressure.

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Section: Introductionmentioning

confidence: 99%

Improved Dielectric Properties and Grain Boundary Effect of Phenanthrene Under High Pressure

et al. 2021

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Interface properties and dopability of an organic semiconductor: TAPP-Br variable as molecule but inert in the condensed phase

Abstract: The behaviour of an organic semiconductor (TAPP-Br) is found to be variable upon condensation on various surfaces and as mixtures with typical dopants.

Cited by 1 publication

References 37 publications

Improved Dielectric Properties and Grain Boundary Effect of Phenanthrene Under High Pressure

Improved Dielectric Properties and Grain Boundary Effect of Phenanthrene Under High Pressure

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