Abstract
Photocurrents in Langmuir multimolecular layers of cadmium arachidate mixed with cyanine dyes between metal electrodes were studied. The photocurrent efficiency was found to depend on the applied voltage, the temperature and the distance between the dye molecules and the electrode. All samples exhibited non- ohmic behavior of the photocurrent. It was concluded that the photocurrent was initiated by the thermionic emission of electrons from the excited dyes. The activation energy necessary for the electron emission from the excited dye in the mixed layers was determined to be 0.52 eV. Absorption spectra were measured for layers deposited on an aluminum film and on a glass slide.
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