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Communication Dans Un Congrès Année : 2022

Examination of C12A7 electride work function and surface composition by means of XPS, UPS and thermionic emission measurements

Antonio Gurciullo
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Vasiliki Papaefthimiou
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Paul Lascombes
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  • PersonId : 1061896
Fabian Plaza
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Angel Post
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  • PersonId : 1170501

Résumé

The work functions of LaB6 and C12A7:e-samples have been estimated by thermionic emission measurements and compared with ultraviolet photoelectron spectroscopy (UPS) data. In addition to this, the surface composition of the samples is characterized by X-ray photoelectron spectroscopy (XPS). Consistent work function values of 3.2-3.3 eV have been measured for clean LaB6 samples. A wider range of values has been measured with the C12A7:e-sample, where a work function of 2.4-2.8 eV and 3.2 eV is estimated when using a setup for thermionic emission and UPS, respectively.
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Dates et versions

hal-03797369 , version 1 (04-10-2022)

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  • HAL Id : hal-03797369 , version 1

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Antonio Gurciullo, Vasiliki Papaefthimiou, Paul Lascombes, Stéphane Mazouffre, Fabian Plaza, et al.. Examination of C12A7 electride work function and surface composition by means of XPS, UPS and thermionic emission measurements. 37th International Electric Propulsion Conference, Jun 2022, Cambridge, United States. ⟨hal-03797369⟩
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