Recent progress on rubrene as active layer in organic field-effect transistors
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RESEARCH PAPER
Recent progress on rubrene as active layer in organic field-effect transistors Wen Gu
Received: 22 June 2020 / Accepted: 4 August 2020 # Springer Nature B.V. 2020
Abstract Organic field-effect transistor (OFET) is kind of organic electronic devices, which consists of gate insulator layer, an active layer, and 3 electrodes (source, gate electrodes, and drain). Among them, the active layer as a key part has been widely concerned by scientific researchers. Rubrene, as a member of the star molecules, has been widely studied. Rubrene exhibits attractive properties, for instance, having one of the utmost reported transistor mobilities at room temperature, and the crystal growth mode is different in different solvents and so on. This paper summarized several methods for producing high-performance single-crystal transistors. The objective of this problem is to offer an extensive overview of rubrene as active layer in OFET.
Keywords Organic field-effect transistor . Rubrene . Active layer . PVT tube furnace . PVT method . Triclinic crystals . BMIM-TFSI (IL) . Semiconductors . Crystal nanostructures . Nanolayers
This article is part of the topical collection: Role of Nanotechnology and Internet of Things in Healthcare Guest Editors: Florian Heberle, Steve bull and John Fitzgerald W. Gu (*) College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620 China e-mail: [email protected]
Introduction In recent years, the organic semiconductor materials, as core materials of a novel generation of electronic devices, attract more and more attention. However, the consideration of the basic electron transport mechanisms in solids is limited. Recently, organic singlecrystal transistors have been rapidly developed. Compared with skeletal film field transistors, traps densities and defects in solitary crystal field-effect transistor are greatly reduced, which provides an effective tool for studying basic semiconductor issues such as the transmission mechanism of organic semiconductors. The organic single-crystal FET-based intrinsic transmission characteristics of semiconductor charge surface were first observed without any interference (Podzorov et al. 2004). In addition, single-crystal devices exhibit higher mobility than the thin film devices of similar material. Single-crystal transistors have good repeatability, and different researchers can get similar results, which facilitates data analysis. Rubrene is the most extensively studied semiconducting material in single-crystal FET devices because it is the only molecular crystal accounted to show inherent possess and properties of mobility at room temperature 20 cm2/V s and at low temperature 30 cm2/V s (Podzorov et al. 2004). However, the low charge carrier mobility caused by the poor crystallinity in conventional thin films limits the practical applications in organic electronics (Zhang et al. 2013). So far, there is much debate about the indict transport system in the organic semiconductors because no theoretical repr
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