We investigate the evolution of copper phthalocyanine thin films as they are etched with argon plasma. Significant morphological changes occur as a result of the ion bombardment; a planar surface quickly becomes an array of nanopillars which are less than 20 nm in diameter. The changes in morphology are independent of plasma power, which controls the etch rate only. Analysis by X-ray photoelect...

Related Articles High efficiency and high photo-stability zinc-phthalocyanine based planar heterojunction solar cells with a double interfacial layer Appl. Phys. Lett. 101, 113301 (2012) High efficiency and high photo-stability zinc-phthalocyanine based planar heterojunction solar cells with a double interfacial layer APL: Org. Electron. Photonics 5, 207 (2012) Theory and simulation of organic ...

Electron variability and complex formation of transition metal phthalocyanine are discussed. Under proper conditions the well-known metal(n) phthalocyanines [MPc] (M = Cr, Mn, Fe, Co, Ni, Cu, Zn) can take up four or, in two cases, five electrons. To elucidate the electronic structure of the isolated anionic complexes Li[MPc] m THF a simple LCAO—MO model was derived which proved well suited to t...

Phthalocyanines (Pcs) containing a carboxylic acid functionality directly bound to the macrocycle have been synthesized, in one step and in good yields, from iodo-substituted Pc precursors. This methodology represents a convenient alternative to the commonly used method based on two consecutive oxidations of hydroxymethyl Pcs.

The fluorination of p-type metal phthalocyanines produces n-type semiconductors, allowing the design of organic electronic circuits that contain inexpensive heterojunctions made from chemically and thermally stable p- and n-type organic semiconductors. For the evaluation of close to intrinsic transport properties, high-quality centimeter-sized single crystals of F16CuPc, F16CoPc and F16ZnPc hav...

Bulk heterojunction organic solar cells based on small molecules are often fabricated by the co-deposition of donor and accepter materials on substrates placed horizontally. An intimate blend of donor and acceptor molecules is the common product in as-prepared samples. Using metal phthalocyanine as the donor and fullerene as the acceptor, we tilt the substrate to deposit the active layer. Both ...

We present our results on nonlinear optical (NLO) and optical limiting properties of Tetra tert-butyl phthalocyanine and Zinc tetra tert-butyl phthalocyanine studied at 633 nm using a continuous wave laser. We have evaluated the sign and magnitude of the third-order nonlinearity from the closed aperture Z-scan data while the nonlinear absorption properties were assessed using the open aperture ...

We have been investigating the use of organic pigments as semiconductor photocatalysts in a dual stage water decomposition scheme that would ultimately use solar energy to generate hydrogen from water. We have shown that by employing a combination of simple screening procedures on prospective compounds, such as semiempirical molecular orbital calculations and thin film voltammetry, we can quick...

Three phthalocyanine derivatives were synthesized and characterized: one modified with a racemic mixture of 1-(4-bromophenyl)ethanol and two other macrocycles modified with each one of the enantioenriched isomers (R)-1-(4-bromophenyl)ethanol and (S)-1-(4-bromophenyl)ethanol. The compounds were characterized by 1H-NMR spectroscopy, mass spectrometry, UV-Vis absorption, and excitation and emissio...

This work reports on the electrocatalytic oxidation of hydroxide using different central metal ion phthalocyanines and porphyrins immobilized on gold electrodes. The apparent electrocatalytic activity of cobalt phthalocyanine or porphyrin modified electrodes was found to be the greatest among the present series of metal ion macrocycles investigated. Copper and unmetallated phthalocyanine or por...