Preheated ignition and work function studies on alkaline earth metal oxides coated tungsten electrodes of fluorescent lamps
| Autor: | Reinhard Langer, Farrukh Dar, Achim Hilscher, Siegfried Horn, Reinhard Tidecks |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Kelvin probe force microscope
Oxide Analytical chemistry chemistry.chemical_element Nanotechnology Tungsten Condensed Matter Physics Fluorescence Electronic Optical and Magnetic Materials law.invention Ignition system chemistry.chemical_compound chemistry law Electrode Work function Instrumentation Fluorescent lamp |
| Popis: | This paper describes measurements on the alkaline earth (Ba, Sr, Ca) oxide layers utilized as emitting material in fluorescent lamp electrodes. In a first approach we compared the emission capabilities of the different materials (BaO, SrO and CaO coatings on tungsten filaments) by their ability to facilitate the start of a lamp. In a second investigation the work function was measured quantitatively by means of a Kelvin probe. Basically, the results of both measurements coincide. The impact of sample geometry on measurement results of a Kelvin probe applied for work function measurements of lamp electrodes are discussed in detail. |
| Databáze: | OpenAIRE |
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