Authors
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Darbandy, G. ; Dollinger, F. ; Formanek, P. ; Hübner, R. ; Resch, S. ; Roemer, C. ; Fischer, A. ; Leo, K. ; Kloes, A. ; Kleemann, H.
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Title
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Unraveling structure and device operation of organic permeable base transistors
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Date
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01.07.2020
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Number
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58542
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Abstract
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Organic permeable base transistors (OPBTs) are of great interest for flexible electronic circuits, as they offer very large on–current density and a record–high transition frequency. They rely on a vertical device architecture with current transport through native pinholes in a central base electrode. This study investigates the impact of pinhole density and pinhole diameter on the DC device performance in OPBTs based on experimental data and TCAD simulation results. A pinhole density of N Pin = 54 µm-2 and pinhole diameters around L Pin = 15 nm are found in the devices. Simulations show that a variation of pinhole diameter and density around these numbers has only a minor impact on the DC device characteristics. A variation of the pinhole diameter and density by up to 100% lead to a deviation of less than 4% in threshold voltage, on/off current ratio, and sub–threshold slope. Hence, the fabrication of OPBTs with reliable device characteristics is possible regardless of statistical deviations in thin film formation.
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Publisher
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Advanced Electronic Materials
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Wikidata
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Q106559690
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Citation
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Advanced Electronic Materials 6 (2020) 2000230
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DOI
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https://doi.org/10.1002/AELM.202000230
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Tags
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