학술논문
Flexible 99% semiconducting carbon nanotube network transistors for gas sensor application / 가스 센서 응용을 위한 유연기판에 제작된 99% 반도체성 탄소나노튜브 기반 전계 효과 트랜지스터
Document Type
Dissertation/ Thesis
Author
Source
Subject
Language
English
Abstract
Over the past few decades, nanomaterials such as graphene, reduced graphene oxide, and single-wall carbon nanotubes (SWCNTs) have been used as sensing materials. Among these, SWCNTs have received increasing attention as promising sensing materials for high-sensitivity chemical/gas sensors owing to their outstanding physical properties. Detecting nitrogen dioxide (NO2) is essential for monitoring environmental pollution and human health. Controlling air quality is a very significant factor for modern societies. This function leads to the need for sensitive sensors. We found that the gas response of carbon nanotube (CNT)-based gas sensors under various CNT densities can be used for enhanced detection of NO2. Given the excellent material properties of CNTs, we achieved high sensitivity, repeatability, and stability for flexible CNT-based gas sensors. In this study, we fabricate a 99% semiconducting CNT-based gas sensor on a flexible substrate and provide guidelines for the improved design of flexible CNT-based gas sensors for various applications and to facilitate more reliable fabrication procedures.
Over the past few decades, nanomaterials such as graphene, reduced graphene oxide, and single-wall carbon nanotubes (SWCNTs) have been used as sensing materials. Among these, SWCNTs have received increasing attention as promising sensing materials for high-sensitivity chemical/gas sensors owing to their outstanding physical properties. Detecting nitrogen dioxide (NO2) is essential for monitoring environmental pollution and human health. Controlling air quality is a very significant factor for modern societies. This function leads to the need for sensitive sensors. We found that the gas response of carbon nanotube (CNT)-based gas sensors under various CNT densities can be used for enhanced detection of NO2. Given the excellent material properties of CNTs, we achieved high sensitivity, repeatability, and stability for flexible CNT-based gas sensors. In this study, we fabricate a 99% semiconducting CNT-based gas sensor on a flexible substrate and provide guidelines for the improved design of flexible CNT-based gas sensors for various applications and to facilitate more reliable fabrication procedures.
Over the past few decades, nanomaterials such as graphene, reduced graphene oxide, and single-wall carbon nanotubes (SWCNTs) have been used as sensing materials. Among these, SWCNTs have received increasing attention as promising sensing materials for high-sensitivity chemical/gas sensors owing to their outstanding physical properties. Detecting nitrogen dioxide (NO2) is essential for monitoring environmental pollution and human health. Controlling air quality is a very significant factor for modern societies. This function leads to the need for sensitive sensors. We found that the gas response of carbon nanotube (CNT)-based gas sensors under various CNT densities can be used for enhanced detection of NO2. Given the excellent material properties of CNTs, we achieved high sensitivity, repeatability, and stability for flexible CNT-based gas sensors. In this study, we fabricate a 99% semiconducting CNT-based gas sensor on a flexible substrate and provide guidelines for the improved design of flexible CNT-based gas sensors for various applications and to facilitate more reliable fabrication procedures.