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We have fabricated and tested Schottky-type photovoltaic cells based on chloro(sub-phthalocyaninato)boron(III) complex, SubPcBCl. The vacuum-deposited SubPcBCl layer was sandwiched between standard glass/ITO substrate and evaporated Au , Ag or Al top metallic electrode. Performance of such cells depends on the work function of the cathode material. Power conversion efficiency of the non-optimized cells with Al cathode approaches ~0.01% under 1 sun illumination. The photovoltaic effect takes place even if gold is used as top electrode.

Phone: þ78 314 179 473, Fax: þ78 314 17 464A hybrid inorganic/organic heterojunction formed by p-type cuprous iodide CuI and n-type fullerene C 60 was employed in the archetypal photovoltaic devices. The thickness of the p-CuI layer deposited on a molybdenum oxide (MoO x ) anode buffer was optimized to achieve a higher efficiency, while the thickness of the n-C 60 photoabsorber layer was fixed. In an attempt to obtain semitransparent devices, a trilayer MoO x / metal/MoO x cathode with a BCP underlayer was applied (metal ¼ Ag or Mg, BCP ¼ bathocuproine). The maximum photovoltage of such devices on a PET/ITO substrate was equal to 0.75 V for an average transparency of about 35% over the range of 380-1000 nm. Similar devices having a nontransparent Al cathode in conjunction with an Alq3 underlayer generate photovoltage of 0.82 V (Alq3 ¼ tris-8-hydroxyquinolinato-aluminum), which shows the important effect of hybrid junctions in multilayer organic-based devices. Original Paper 1700186 (4 of 5) V. V. Travkin et al.: CuI-based hybrid junction in photovoltaic devices ß

As a follow-up to our study on aggregation of metal-etioporphyrin complexes (Colloids Surf. A. Physicochem. Eng. Asp. 2022, 648, 129284 ), we considered thin films of three isomers of copper(II) etioporphyrin deposited on hot substrates. Despite the almost identical absorption spectra of isomers, their solid-state superstructures differ remarkably both in form and size. The lateral conductivity of films is much less sensitive to an isomer-type, regardless of the substrate temperature. However, the dark conductivity of cold-grown films is about two orders of magnitude higher than that of hot-grown films, whereas the photoconductivity of the latter is 100–1700 times greater, depending on the isomer.

The first tellurium-containing phthalocyanine analogues have been prepared and spectroscopically characterised: the Mg(II) complex of tetra(1,2,5-telluradiazolo)porphyrazine and a low-symmetry tert-butyl substituted Mg(II) tribenzoporphyrazine with one fused 1,2,5-telluradiazole ring. It was observed that the introduction of Te atom(s) reduces the energy of the Q-transition, facilitates the reduction of the macrocycle and strongly increases the conductivity of thin films.