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Switchable Charge I...
Switchable Charge Injection Barrier in an Organic Supramolecular Semiconductor
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- Gorbunov, Andrey V. (author)
- Eindhoven University of Technology, Netherlands
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- Haedler, Andreas T. (author)
- Eindhoven University of Technology, Netherlands
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- Putzeys, Tristan (author)
- Katholieke University of Leuven, Belgium
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- Zha, R. Helen (author)
- Eindhoven University of Technology, Netherlands
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- Schmidt, Hans-Werner (author)
- University of Bayreuth, Germany
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- Kivala, Milan (author)
- University of Erlangen Nurnberg, Germany
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- Urbanaviciute, Indre (author)
- Linköpings universitet,Komplexa material och system,Tekniska fakulteten
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- Wubbenhorst, Michael (author)
- Katholieke University of Leuven, Belgium
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- Meijer, E. W. (author)
- Eindhoven University of Technology, Netherlands
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- Kemerink, Martijn (author)
- Linköpings universitet,Komplexa material och system,Tekniska fakulteten,Eindhoven University of Technology, Netherlands
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(creator_code:org_t)
- 2016-06-08
- 2016
- English.
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In: ACS Applied Materials and Interfaces. - : AMER CHEMICAL SOC. - 1944-8244 .- 1944-8252. ; 8:24, s. 15535-15542
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Abstract
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- We disclose a supramolecular material that combines semiconducting and dipolar functionalities. The material consists of a discotic semiconducting carbonyl-bridged triarylamine core, which is surrounded by three dipolar amide groups. In thin films, the material self-organizes in a hexagonal columnar fashion through Jr-stacking of the molecular core and hydrogen bonding between the amide groups. Alignment by an electrical field in a simple metal/semiconductor/metal geometry induces a polar order in the interface layers near the metal contacts that can be reversibly switched, while the bulk material remains nonpolarized. On suitably chosen electrodes, the presence of an interfacial polarization field leads to a modulation of the barrier for charge injection into the semiconductor. Consequently, a reversible switching is possible between a high-resistance, injection-limited off-state and a low-resistance, space-charge-limited on-state. The resulting memory diode shows switchable rectification with on/off ratios of up to two orders of magnitude. This demonstrated multifunctionality of a single material is a promising concept toward possible application in lowcost, large-area, nonvolatile organic memories.
Subject headings
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
Keyword
- organic semiconductors; current switching; memories; polarization; rectification; dipolar switching; injection barrier
Publication and Content Type
- ref (subject category)
- art (subject category)
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Gorbunov, Andrey ...
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Haedler, Andreas ...
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Putzeys, Tristan
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Zha, R. Helen
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Schmidt, Hans-We ...
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Kivala, Milan
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Urbanaviciute, I ...
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Wubbenhorst, Mic ...
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Meijer, E. W.
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Kemerink, Martij ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Inorganic Chemis ...
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ACS Applied Mate ...
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Linköping University