Growth and morphology of rubrene thin films on hydrophilic and hydrophobic substrates

Sinha, Subhajit; Wang, C.-H.; Islam, A. K. M. Maidul; Yang, Yonglin; Mukherjee, M.

doi:10.1063/1.4791253

Cited by 2 publications

(1 citation statement)

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“…They argue that the decisive factor for proper crystallization is the spatial orientationhence, rotationof the rubrene molecules. This theory is supported by results from Dull et al These findings are, however, in contrast to experiments of Sinha et al, who suggest that crystallization is governed by the transport of individual molecules across the surface, which would be influenced by the hydrophilic/hydrophobic nature of the substrate.…”

Section: Approaches Toward Highly Ordered Thin-filmsmentioning

confidence: 65%

Highly Ordered Small Molecule Organic Semiconductor Thin-Films Enabling Complex, High-Performance Multi-Junction Devices

Sawatzki-Park,

Wang,

Kleemann

et al. 2023

Chem. Rev.

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Organic semiconductors have opened up many new electronic applications, enabled by properties like flexibility, low-cost manufacturing, and biocompatibility, as well as improved ecological sustainability due to low energy use during manufacturing. Most current devices are made of highly disordered thin-films, leading to poor transport properties and, ultimately, reduced device performance as well. Here, we discuss techniques to prepare highly ordered thin-films of organic semiconductors to realize fast and highly efficient devices as well as novel device types. We discuss the various methods that can be implemented to achieve such highly ordered layers compatible with standard semiconductor manufacturing processes and suitable for complex devices. A special focus is put on approaches utilizing thermal treatment of amorphous layers of small molecules to create crystalline thin-films. This technique has first been demonstrated for rubrenean organic semiconductor with excellent transport propertiesand extended to some other molecular structures. We discuss recent experiments that show that these highly ordered layers show excellent lateral and vertical mobilities and can be electrically doped to achieve high n- and p-type conductivities. With these achievements, it is possible to integrate these highly ordered layers into specialized devices, such as high-frequency diodes or completely new device principles for organics, e.g., bipolar transistors.

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Section: Approaches Toward Highly Ordered Thin-filmsmentioning

confidence: 65%