Mixtures of organic macrocycles for applications in solar cell devices

Abstract

AbstractIn this paper we present spectroscopic and photoelectric studies of two families of macrocycles and their mixtures: phthalocyanines and naphthalocyanines complexed with various ions. The dyes are characterized by significant light absorption and each dye absorbs in a different spectral region and covers only a part of the solar light spectrum. The use of the dyes mixture extends the light absorption region and can lead to the enhancement of photovoltaic effects. The spectroscopic properties are studied to establish the radiative and non–radiative deactivation pathways of the dye excited states as processes competitive to charge separation. As it is shown, the excitation energy transfer improve the efficiency of light energy to electric energy conversion. The dynamics of the electromagnetic field in the phthalocyanine–naphthalocyanine–solvent system as a multicomponent body in the sense of extended phenomenological electrodynamics is also presented. Lagrange–Hamilton formalism can be used in the investigation of the local electromagnetic field in the dyes–solvent mixture. The presented results seem to be essential in the determination of the conditions required for the enhancement of the photoeffects in the photoelectrochemical cell based on the organic materials.