Enhanced Raman scattering from cesium suboxides in photocathodes: Ag―O―Cs (S-1) and Bi―Ag―O―Cs (S-10)

Raman spectra from photomultipliers having Ag–O–Cs photocathodes (S-1) are found to correspond to the vibrational spectrum of Cs11O3. The wavelength dependence of the Cs11O3 Raman intensity is compared with the radiant sensitivity of the S-1 photocathode, and the possible role of Ag islands in enhan...

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Veröffentlicht in:	J. Appl. Phys.; (United States) 1984-06, Vol.55 (11), p.3907-3911
Hauptverfasser:	VON RABEN, K. U, LEE, K. C, CHANG, R. K, BENNER, R. E
Format:	Artikel
Sprache:	eng
Schlagworte:	360204 - Ceramics, Cermets, & Refractories- Physical Properties 360205 - Ceramics, Cermets, & Refractories- Corrosion & Erosion 400201 - Chemical & Physicochemical Properties 440300 - Miscellaneous Instruments- (-1989) ALKALI METAL COMPOUNDS Applied sciences BISMUTH COMPOUNDS CATHODES CESIUM COMPOUNDS CESIUM OXIDES CHALCOGENIDES CHEMICAL COMPOSITION CHEMICAL REACTIONS DISTRIBUTION ELECTRODES Electronic tubes, masers Electronics ELEMENTS ENERGY LEVELS ENERGY-LEVEL TRANSITIONS Exact sciences and technology EXCITATION EXCITED STATES FABRICATION INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY LAYERS MATERIALS SCIENCE METALS OPTICAL PROPERTIES OTHER INSTRUMENTATION OXIDATION OXIDES OXYGEN COMPOUNDS PHOTOCATHODES PHOTOMULTIPLIERS PHOTOTUBES PHYSICAL PROPERTIES RAMAN EFFECT RAMAN SPECTRA SILVER SILVER COMPOUNDS SPATIAL DISTRIBUTION SPECTRA THIN FILMS TRANSITION ELEMENT COMPOUNDS TRANSITION ELEMENTS VIBRATIONAL STATES
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Zusammenfassung:	Raman spectra from photomultipliers having Ag–O–Cs photocathodes (S-1) are found to correspond to the vibrational spectrum of Cs11O3. The wavelength dependence of the Cs11O3 Raman intensity is compared with the radiant sensitivity of the S-1 photocathode, and the possible role of Ag islands in enhancing the Raman intensity and photocurrent is discussed. The composition near the edge of the Bi–Ag–O–Cs photocathode (S-10) was found to be Cs11O3.
ISSN:	0021-8979 1089-7550
DOI:	10.1063/1.332975