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

Abstract

Enhanced Raman scattering from cesium suboxides on silver particles and the structure of S1 photocathodes Appl. Phys. Lett. 45, 1058Lett. 45, (1984; 10.1063/1.95067The role of cesium suboxides in lowworkfunction surface layers studied by xray photoelectron spectroscopy: Ag OCs Appl. Phys. Lett. 36, 675 (1980); 10.1063/1.91620Hypothetical mechanism of operation of the AgOCs (S1) photocathode involving the peroxide Cs2O2Raman spectra from photomultipliers having Ag-O-Cs photocathodes (S-l) are found to correspond to the vibrational spectrum ofCs l1 0 3 . The wavelength dependence of the CS l1 0 3 Raman intensity is compared with the radiant sensitivity of the S-l 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 CS!!03'