Optimization of organic gas sensor performance through sensing area control
발표자
전승현 (인천대학교)
연구책임자
박영돈 (인천대학교)
초록
내용
Organic-based gas sensors face critical challenges, including low sensitivity, poor selectivity, and limited atmospheric stability compared to inorganic counterparts. While many studies address these issues through chemical modification, structural engineering, and incorporation of porous materials, we demonstrate that simple geometric tuning—specifically adjusting channel length and contact geometry in poly(3-hexylthiophene) (P3HT)-based field-effect transistors—can significantly improve gas sensing performance without any chemical or physical modification. Although shorter channels enhance transistor characteristics, they reduce the effective gas adsorption area, thereby compromising sensing capability. Our findings emphasize the importance of structural design and suggest that geometry optimization alone can serve as a practical, scalable strategy to boost sensor performance and provide a platform for future integration with advanced materials.