Gas sensing properties based on a doped conducting polymer/inorganic semiconductor

• Author(s): Campos, M. ; IEEE
• Date: 2020
• Persistent ID: http://hdl.handle.net/11449/194578
• Origin: Oasisbr
• Subject(s): heterojunction; conducting polymer; Schottky diode; sensor; acetone
• Document Type: Other
• Language: English

Description

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For medical diagnostic applications, there is currently a strong need for systems that comprises simple detectors. In this paper, we report the fabrication of heterojunction between p-doped polypyrrole and n-doped silicon and its possible use in the detecting of acetone. In the forward bias voltage region, the heterojunction diode exhibit a significant, fast and reversible response to acetone. The characteristics of the diodes were measured as a function of acetone vapor, temperature, polypyrrole film thickness and frequency, using current density-voltage and capacitance-voltage measurements..

Univ Estadual Paulista, UNIP, Ribeirao Preto, SP, Brazil

Univ Estadual Paulista, UNIP, Ribeirao Preto, SP, Brazil