THE INCORPORATION OF METAL-CLUSTERS INTO THIN ORGANIC-DYE LAYERS AS A METHOD FOR PRODUCING STRONGLY ABSORBING COMPOSITE LAYERS - AN OSCILLATOR MODEL APPROACH TO RESONANT METAL CLUSTER ABSORPTION

We present data on the NIR/VIS/UV optical constants of thin composite layers, built up from a copper phthalocyanine matrix with embedded metal clusters. The metal clusters (copper, gold and silver) have diameters on a nanometre scale and act as strong absorption centres. In particular, local plasmon resonances and metal interband transitions could be observed from a fit of the experimentally determined dielectric functions by means of a Lorentzian multi-oscillator model. Average dipole transition matrix elements with respect to a single metal cluster have been estimated from the oscillator parameters.