Serveur d'exploration sur l'Indium

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High-mobility metal-oxide thin-film transistors by spray deposition of environmentally friendly precursors

Identifieur interne : 000112 ( Main/Repository ); précédent : 000111; suivant : 000113

High-mobility metal-oxide thin-film transistors by spray deposition of environmentally friendly precursors

Auteurs : RBID : Pascal:14-0090003

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English descriptors

Abstract

The synthesis of versatile, and non-toxic precursors for ambient-air deposition of semiconducting metal-oxide thin films by spray pyrolysis is reported. The resulting thin films yield stable and reproducible performance in thin-film transistors. The precursors are based on reactions of metal salts and an organic ammonium source in water. The precursor preparation is highly versatile with respect to low-level handling requirements (i.e. in air) and miscibility for the synthesis of customized mixed metal oxides. The precursor solutions are deposited by spray pyrolysis and integrated into bottom-gate test structures with staggered source and drain contacts. Indium zinc oxide thin films deposited from a precursor with an [In]/[Zn] ratio of 3:1 exhibit an on-off current ratio of 106 with a calculated saturation mobility of 14.1 cm2 V-1 s-1 ± 1.1 cm2 V-1 s-1 at a drain voltage of 40 V. The demonstrated route to non-toxic molecular precursors for low-temperature thin-film processing in ambient atmosphere benefits from low cost of educts, environmentally friendly solvents, minimized health risk when compared to nanoparticle processing, and an excellent performance for electronic applications.

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Pascal:14-0090003

Le document en format XML

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<term>Nanoparticle</term>
<term>Nanostructured materials</term>
<term>Precursor</term>
<term>Pyrolysis</term>
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<div type="abstract" xml:lang="en">The synthesis of versatile, and non-toxic precursors for ambient-air deposition of semiconducting metal-oxide thin films by spray pyrolysis is reported. The resulting thin films yield stable and reproducible performance in thin-film transistors. The precursors are based on reactions of metal salts and an organic ammonium source in water. The precursor preparation is highly versatile with respect to low-level handling requirements (i.e. in air) and miscibility for the synthesis of customized mixed metal oxides. The precursor solutions are deposited by spray pyrolysis and integrated into bottom-gate test structures with staggered source and drain contacts. Indium zinc oxide thin films deposited from a precursor with an [In]/[Zn] ratio of 3:1 exhibit an on-off current ratio of 10
<sup>6 </sup>
with a calculated saturation mobility of 14.1 cm
<sup>2</sup>
V
<sup>-1</sup>
s
<sup>-1</sup>
± 1.1 cm
<sup>2</sup>
V
<sup>-1</sup>
s
<sup>-1</sup>
at a drain voltage of 40 V. The demonstrated route to non-toxic molecular precursors for low-temperature thin-film processing in ambient atmosphere benefits from low cost of educts, environmentally friendly solvents, minimized health risk when compared to nanoparticle processing, and an excellent performance for electronic applications.</div>
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<sup>6 </sup>
with a calculated saturation mobility of 14.1 cm
<sup>2</sup>
V
<sup>-1</sup>
s
<sup>-1</sup>
± 1.1 cm
<sup>2</sup>
V
<sup>-1</sup>
s
<sup>-1</sup>
at a drain voltage of 40 V. The demonstrated route to non-toxic molecular precursors for low-temperature thin-film processing in ambient atmosphere benefits from low cost of educts, environmentally friendly solvents, minimized health risk when compared to nanoparticle processing, and an excellent performance for electronic applications.</s0>
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