CALCULATION OF THE OPTICAL-PROPERTIES OF PHTHALOCYANINE THIN-FILMS WITH INCORPORATED NOBLE-METAL CLUSTERS

The extinction spectra of nanometre-sized metal particles (copper, sil ver and gold) embedded in a phthalocyanine matrix are calculated in te rms of generalized Mie theory. The particles are modelled as metal sph eres with a phthalocyanine shell. In particular, the effect of aggrega tion on the optical properties is investigated theoretically, consider ing planar aggregates of densely packed heterogeneous particles. The c omparison with experimental data confirms the importance of considerin g aggregation effects in the calculation for metal volume filling fact ors of around 20%.