NOVELTY - Compounds (A1) comprising non-activated porphyrin fused with at least one non-activated polycyclic aromatic rings, are new.    USE - In photosensitive device; and for fabricating a photosensitive device (claimed). Also used in organic films, organic electronic devices, and solar cells.    ADVANTAGE - The thermal fusion of polycyclic rings to a porphyrin core in meso, beta fashion forms hybrid structures containing distorted porphyrin ring with annulated aromatic rings, this ring fusion causes a significant distortion of the porphyrin away from planarity. The non-planar structure leads to broadening and red shifting of absorption bands and an enhanced solubility in organic solvents. The substituted meso, beta substituted porphyrins have significant absorption in both visible and NIR part of the spectrum, these materials make excellent candidates for active materials in solar cells and photodetectors, where strong absorption in the visible and NIR are crucial. They also have significant benefits for application in NIR light emitting diodes. The preparation and use effusing polycyclic aromatic hydrocarbons and heterocycles to porphyrins extend and broaden absorption, and help to modify the solubility, crystallinity, and film forming properties of porphyrins.    DETAILED DESCRIPTION - Compounds (A1) comprising non-activated porphyrin fused with at least one non-activated polycyclic aromatic rings, selected from 21 compounds, as given in the specification, e.g. compounds of formulae (I) to (IV), are new.    M'=two hydrogen atoms or any element selected from Mg, Ca, Sr, Ba, Sc, Y, La, Ce, Ti, Nb, Ta, Cr, Mo, W, Mn, Tc, Re, Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Hg, Al, Ga, In, Tl, Si, Ge, Sn, Pb, P, As, Sb, Bi, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Th, and U;    R 1-R 20=H, alkyl, fluoroalkyl, hydroxyl, alkoxy, halo (Cl, Br, I), chalcogens (S, Se, Te), mercapto group, amino, cyano, alkenyl, alkynyl, or aryl;    X=O, S, Se, Te, N, P, As, Si, Ge, or B.    The adjacent groups in R4-R9and R14-R19; R5-R7and R13-R15may form fused aromatic and/or unsaturated rings including 4-9 membered rings, or fused heterocyclic rings with heteroatoms.    INDEPENDENT CLAIMS are included for:    (1) a photosensitive device comprising: a first electrode; a second electrode; and a photoactive region provided between the first electrode and the second electrode, where the photoactive region contains donor material containing non-activated porphyrins fused, with at least one non-activated polycyclic aromatic ring or at least one non-activated heterocyclic ring; and an acceptor material;    (2) preparing (P1) the compound (A1); and    (3) fabricating a photosensitive device involving depositing a first electrode layer on a substrate; depositing a layer of organic donor material and/or organic acceptor material over the first electrode and forming an interim structure, where the organic donor material comprises precursor porphyrin material; thermally fusing the precursor porphyrin material by heating the interim structure to a fusion temperature in an inert gas environment and holding the interim structure at the fusion temperature for a predefined period of time until the precursor porphyrin material melts and forms a layer of mixture of fused prophyrins, where the fusion temperature is associated with the precursor porphyrin material; depositing a layer of an organic acceptor material over the layer of organic donor material, where the organic donor material layer and the organic acceptor material layer form a photoactive region; and depositing a second electrode layer over the organic acceptor material layer.