Carbon Dots as Sensing Layer for Printed Humidity and Temperature Sensors Rivadeneyra Torres, Almudena Fernández Salmerón, José Murru, Fabio Lapresta Fernández, Alejandro Rodríguez Santiago, Noel Capitán Vallvey, Luis Fermín Morales Santos, Diego Pedro Salinas Castillo, Alfonso Capacitive sensors Moisture content Nanomaterials Screen printing Printed electronics This work presents an innovative application of carbon dots (Cdots) nanoparticles as sensing layer for relative humidity detection. The developed sensor is based on interdigitated capacitive electrodes screen printed on a flexible transparent polyethylene terephthalate (PET) film. Cdots are deposited on top of these electrodes. An exhaustive characterization of the nanoparticles has been conducted along with the fabrication of the sensor structure. The accompanied experiments give all the sensibility to the Cdots, showing its dependence with temperature and exciting frequency. To the best of our knowledge, this work paves the path to the use of these kind of nanoparticles in printed flexible capacitive sensors aimed to be employed in the continuously expanding Internet of Things ecosystem. 2021-02-10T10:18:52Z 2021-02-10T10:18:52Z 2020-12-07 info:eu-repo/semantics/article Rivadeneyra, A., Salmeron, J. F., Murru, F., Lapresta-Fernández, A., Rodríguez, N., Capitan-Vallvey, L. F., ... & Salinas-Castillo, A. (2020). Carbon Dots as Sensing Layer for Printed Humidity and Temperature Sensors. Nanomaterials, 10(12), 2446. [doi:10.3390/nano10122446] http://hdl.handle.net/10481/66428 10.3390/nano10122446 eng http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess Atribución 3.0 España Mdpi