Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Konferenzbeitrag

Probing Ionization Energies for Trace Gas Identification: The Micro Photo Electron Ionization Detector (PEID)

MPG-Autoren
/persons/resource/persons104341

Velasco-Velez,  Juan
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

Externe Ressourcen
Es sind keine externen Ressourcen hinterlegt
Volltexte (beschränkter Zugriff)
Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.
Volltexte (frei zugänglich)

manuscript.pdf
(beliebiger Volltext), 633KB

Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Doll, T., Oberröhrmann, J., Baum, S., Köhler, R., Schütte, H., Gassmann, S., et al. (2021). Probing Ionization Energies for Trace Gas Identification: The Micro Photo Electron Ionization Detector (PEID). In E. Massera (Ed.), CSAC2021: 1st International Electronic Conference on Chemical Sensors and Analytical Chemistry: session Gas Sensors. Basel: MDPI. doi:10.3390/CSAC2021-10431.


Zitierlink: https://hdl.handle.net/21.11116/0000-0008-E45A-2
Zusammenfassung
Micro gas sensors detect the presence of substances, but can hardly identify them. We developed a novel approach of probing referenceable ionization energies. It extends the photoionization principle towards tunable energies via replacement of photons by accelerated photo electrons. The device comprises UV-LED illumination, an atmospherically stable photoelectron emission layer with a nano-vacuum electronics accelerator realized in thin film technology and charged particle measurement. A voltage variation at the accelerator provides electrons of tunable energies. We were able to prove that variable electron energies can be used for substance detection. The resulting system reaches ambient conditions operability. The actual limitations and challenges are discussed.