Flexible pH sensors based on OECTs with a BTB dye-embedded ion-gel gate dielectric
Xin Chen, Jianlong Ji, Yubo Peng, Zhipeng Gao, Min Zhao, Bin Tang, Ying Liu
Abstract
Flexible pH-sensitive OECT is prepared by using an ion-gel gate dielectric modified with BTB dye molecules. The pH sensor exhibits super-Nernstian sensitivity via the protonation/deprotonation of BTB molecules and the doping/de-doping of PEDOT:PSS channel.
Topics & Concepts
ProtonationMaterials scienceDeprotonationPEDOT:PSSDopingMoleculeDielectricIonGate dielectricPhotochemistryOptoelectronicsNanotechnologyOrganic chemistryLayer (electronics)ChemistryVoltageElectrical engineeringEngineeringTransistorAnalytical Chemistry and SensorsConducting polymers and applicationsElectrochemical Analysis and Applications