Hybrid Sensor Based on AlGaN/GaN Molecular Controlled Device

Meital Eckshtain-Levi; Eyal Capua; Yossi Paltiel; Ron Naaman

doi:10.1021/acssensors.5b00047

Hybrid Sensor Based on AlGaN/GaN Molecular Controlled Device

Meital Eckshtain-Levi, Eyal Capua, Yossi Paltiel, Ron Naaman^*

^*Corresponding author for this work

Department of Applied Physics

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

We developed and investigated the properties of molecularly controlled semiconductor resistors (MOCSERs) based on AlGaN/GaN structure. The response of the sensor for two different analytes was investigated when the sensor was coated with two molecules that differ only in their binding groups. We studied the ability to enhance the specificity of the sensor by adding illumination at various sub-bandgap frequencies. It was verified that the sensor is sensitive to the electronegativity of the analyte and illumination can affect the sensitivity and selectivity when the system does not reach a steady state. Hence, we differ between two operational modes in which orthogonal sensing is made.

Original language	English
Pages (from-to)	185-189
Number of pages	5
Journal	ACS Sensors
Volume	1
Issue number	2
DOIs	https://doi.org/10.1021/acssensors.5b00047
State	Published - 26 Feb 2016

Bibliographical note

Publisher Copyright:
© 2015 American Chemical Society.

Keywords

AlGaN/GaN
MOCSER
ammonia
formic acid
side gates
sub-bandgap excitation

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abstract = "We developed and investigated the properties of molecularly controlled semiconductor resistors (MOCSERs) based on AlGaN/GaN structure. The response of the sensor for two different analytes was investigated when the sensor was coated with two molecules that differ only in their binding groups. We studied the ability to enhance the specificity of the sensor by adding illumination at various sub-bandgap frequencies. It was verified that the sensor is sensitive to the electronegativity of the analyte and illumination can affect the sensitivity and selectivity when the system does not reach a steady state. Hence, we differ between two operational modes in which orthogonal sensing is made.",

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AB - We developed and investigated the properties of molecularly controlled semiconductor resistors (MOCSERs) based on AlGaN/GaN structure. The response of the sensor for two different analytes was investigated when the sensor was coated with two molecules that differ only in their binding groups. We studied the ability to enhance the specificity of the sensor by adding illumination at various sub-bandgap frequencies. It was verified that the sensor is sensitive to the electronegativity of the analyte and illumination can affect the sensitivity and selectivity when the system does not reach a steady state. Hence, we differ between two operational modes in which orthogonal sensing is made.

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KW - formic acid

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Hybrid Sensor Based on AlGaN/GaN Molecular Controlled Device

Abstract

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Keywords

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