Isotropic contact patterning to improve reproducibility in organic thin-film transistors
Ricci, Pier Carlo;Bonfiglio, Annalisa;Cosseddu, Piero
2023-01-01
Abstract
A novel approach for improving reproducibility of Organic Field-Effect Transistors electrical performances is proposed. The introduction of isotropic features in the layout of source and drain electrodes is employed to minimize the impact of randomly-distributed crystalline domains in the organic semiconductor film on the reproducibility of basic electrical parameters, such as threshold voltage and charge carrier mobility. A significant reduction of the standard deviation of these parameters is reported over a statistically-relevant set of devices with drop-casted semiconductor, if compared with results obtained in a standard, interdigitated transistor structure. A correlation between electrodes patterning and proposed result is demonstrated by deepening the analysis with the contribution of meniscus-assisted semiconductor printing, in order to precisely control the growth direction of crystals.File | Size | Format | |
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Isotropic contact patterning to improve reproducibility in organic thin-film transistors_2023.pdf open access
Description: articolo online
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