| Title: | Tuning the Selectivity of Metal Oxide Gas Sensors with Vapor Phase Deposited Ultrathin Polymer Thin Films |
| Author(s): | Schroder S; Ababii N; Brinza M; Magariu N; Zimoch L; Bodduluri MT; Strunskus T; Adelung R; Faupel F; Lupan O; |
| Address: | "Multicomponent Materials, Department of Materials Science, Faculty of Engineering, Kiel University, Kaiserstrasse 2, D-24143 Kiel, Germany. Center for Nanotechnology and Nanosensors, Department of Microelectronics and Biomedical Engineering, Technical University of Moldova, 168 Stefan cel Mare Av., MD-2004 Chisinau, Moldova. Functional Nanomaterials, Department of Materials Science, Faculty of Engineering, Kiel University, Kaiserstrasse 2, D-24143 Kiel, Germany. Fraunhofer Institute for Silicon Technology (ISIT), Fraunhoferstrasse 1, D-25524 Itzehoe, Germany" |
| ISSN/ISBN: | 2073-4360 (Electronic) 2073-4360 (Linking) |
| Abstract: | "Metal oxide gas sensors are of great interest for applications ranging from lambda sensors to early hazard detection in explosive media and leakage detection due to their superior properties with regard to sensitivity and lifetime, as well as their low cost and portability. However, the influence of ambient gases on the gas response, energy consumption and selectivity still needs to be improved and they are thus the subject of intensive research. In this work, a simple approach is presented to modify and increase the selectivity of gas sensing structures with an ultrathin polymer thin film. The different gas sensing surfaces, CuO, Al(2)O(3)/CuO and TiO(2) are coated with a conformal < 30 nm Poly(1,3,5,7-tetramethyl-tetravinyl cyclotetrasiloxane) (PV4D4) thin film via solvent-free initiated chemical vapor deposition (iCVD). The obtained structures demonstrate a change in selectivity from ethanol vapor to 2-propanol vapor and an increase in selectivity compared to other vapors of volatile organic compounds. In the case of TiO(2) structures coated with a PV4D4 thin film, the increase in selectivity to 2-propanol vapors is observed even at relatively low operating temperatures, starting from >200 degrees C. The present study demonstrates possibilities for improving the properties of metal oxide gas sensors, which is very important in applications in fields such as medicine, security and food safety" |
| Keywords: | 2-propanol PV4D4 polymer gas sensors hybrid materials initiated chemical vapor deposition selectivity thin films; |
| Notes: | "PubMed-not-MEDLINESchroder, Stefan Ababii, Nicolai Brinza, Mihai Magariu, Nicolae Zimoch, Lukas Bodduluri, Mani Teja Strunskus, Thomas Adelung, Rainer Faupel, Franz Lupan, Oleg eng 434434223-SFB 1461/Deutsche Forschungsgemeinschaft/ LPW-E/3.1.1/1801/'SuSiBaBy' - SulfurSilicon Batteries by the EUSH and EFRE in SH/ 286471992-SFB 1261 project A2/DFG- Deutsche Forschungsgemeinschaft/ GRK 2154 project P4/DFG- Deutsche Forschungsgemeinschaft/ AD 183/16-1/DFG- Deutsche Forschungsgemeinschaft/ No. 20.80009.5007.09/Technical University of Moldova and through the ANCD-NARD Grant No. 20.80009.5007.09 at TUM/ Switzerland 2023/02/12 Polymers (Basel). 2023 Jan 19; 15(3):524. doi: 10.3390/polym15030524" |
