TECHNOLOGY FOCUS - ELECTRONICS - Preferred Film: The light-harvesting film having a maximum peak absorption of 200-1200 nanometers. The light-harvesting film comprises at least one layer selected from a didehydrophorbine layer, phorbine layer or bacteriophorbine layer, where the layers arranged with one another and the charge separation material in the order of the didehydrophorbine layer if present, the phorbine layer if present, the bacteriophorbine layer if present, and then the charge separation material (preferably didehydrophorbine layer and phorbine layer, didehydrophorbine layer and bacteriophorbine layer, or phorbine layer and bacteriophorbine layer; and especially didehydrophorbine layer, phorbine layer, and bacteriophorbine layer). Preferred Components: The semiconductor charge separation material comprises a 'p' region and an 'n' region, where at least one electrode is connected to the 'p' region, and at least one electrode is connected to the 'n' region. Preferred Method: The coating step is carried out by physical vapor deposition, chemical vapor deposition, spin coating, dip coating, spraying, ink-jet printing, and casting.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The metal is selected from zinc or magnesium.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (disclosed): Preparation of the compound (I) involves cyclizing porphyrinic macrocycle compound of formula (II), in an organic solvent, optionally including water, typically by an intramolecular alpha arylation, to produce a cyclized product; and optionally deoxygenating the cyclized product; and then optionally metalating the cyclized product.Z1=H or halo (such as bromo).Preferred Components: The first coordinating substituent is selected from hydroxy, mercapto, or amino. The second coordinating substituent is selected from oxo or thio. The porphyrinic macrocycles are selected from didehydrophorbine, phorbine or bacteriophorbine. In the solar cell, the porphyrinic macrocycle is a compound of formula (I). Preferred Compound: The porphyrinic macrocycle compounds (I) are selected from 17,18-didehydrophorbines of formula (Ia), phorbines of formula (Ib) and (I'b), or bacteriophorbines. EXAMPLE - No suitable example given.