Speaker
Topic
Molecular material-based gas sensors: From molecules to materials and from materials to devices and systems
Date and time
25 April 2024, 10 a.m.
Place
IOCB Prague, Lecture Hall
Abstract
The conduction processes in molecular materials will be presented and different types of organic electronic devices will be discussed, namely resistors, field-effect transistors and heterojunction devices. We will see how molecular engineering is important to control the electrical and sensing properties of devices. Responses to ammonia in the ppm range and below and to ozone in the ppb range will be presented.
References
- S. Ganesh Moorthy et al., π-Extended porphyrin-phthalocyanine heterojunction devices exhibiting high ammonia sensitivity with a remarkable light effect, ACS Sensors, 9, 883, 2024. http://doi.org/10.1021/acssensors.3c02247
- G. Loma Kikobo et al., Photon Assisted-Inversion of Majority Charge Carriers in Molecular Semiconductors-Based Organic Heterojunctions. J. Mater. Chem. C, 9, 5008, 2021. http://doi.org/10.1039/D0TC05828A
- S. Ouedraogo et al., Modulating the electrical properties of organic heterojunction devices based on phthalocyanines for ambipolar sensors, ACS Sensors, 5, 1849, 2020. http://doi.org/10.1021/acssensors.0c00877
- A. Wannebroucq et al., On the interest of ambipolar materials for gas sensing, Sens. Actuators B Chem., 258, 657, 2018. http://doi.org/10.1016/j.snb.2017.11.146
- M. Bouvet, V. Parra, Patent US8450725 B2, 2013
- M. Bouvet et al., Detection and titration of ozone using metallophthalocyanine-based field-effect transistor, Sens. Actuators B Chem., 72, 86, 2001. http://doi.org/10.1016/S0925-4005(00)00630-4