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Publicação
Development of eco-friendly ZnO inks for paper-based printed electronics
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Resumo(s)
In this work, we report the development of printable semiconducting inks compatible
with screen-printing and paper technology and functional at room temperature without
the need of post-deposition treatments. The developed eco-friendly inks are based on a
dispersion of zinc oxide nanoparticles on a cellulose matrix. Several cellulose derivatives
were used to design and engineer such inks looking for the best formulation, printing
conditions and compatibility with cellulose-based substrates. The approach described
here represents an innovative and versatile generation of semiconducting inks composed
of some of the cheapest, renewable and highly abundant materials we can find on Earth,
such as cellulose, able to be implemented as channel in printed transistors on paper.
By using a cellulose-based ion gel as gate dielectric the printed ZnO transistors exhibit
an Ion=of f ratio ranging from 103 to 105, sat values close to 9 cm2 V 1 s1 and gm of
around 0.4 mS.
Descrição
Palavras-chave
Zinc oxide electrolyte-gated transistor printed electronics screen-printing cellulose paper electronics