Negative-resistance and high-mobility devices based on paper
A two-step, low-temperature (75 °C), and aqueous method has been developed for synthesis of polycrystalline Fe2O3, Y2O3 and Bi2O3 on the surface of cellulose fiber paper. Three types of flexible cellulose paper-based electrical devices have been fabricated using this strategy, which show negative resistance effect, leading to negative current with the increase of applied voltages. Such negative resistance effect can be well explained by a theoretical model based on charge shifting velocity. Most importantly, we find that these paper devices show the merits of low threshold voltage and high mobility, where the Fe2O3-based device exhibits the lowest V th of 0.4 V and the highest mobility of 55555 m2V–1s–1. We consider that the existing of the high mobility on these metal oxides based paper devices might be attributed to the formation of impurity band.
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Document Type: Research Article
Publication date: February 1, 2017
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