TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The electron donor is p-type organic semiconductor material having band gap of 2.5-4.4 eV. The p-type organic semiconductor material is poly(2-methoxy-5- (2'-ethylhexyloxy)-p-phenylene vinylene) (MEH-PPV), poly(2-methoxy-5-(3,7-dimethyloctyloxy)-1,4-phenylenevinylene) (MDMO-PPV), and/or poly(3-hexylthiophene) (P3HT). The electron acceptor is an n-type organic semiconductor material, including fullerene and its derivatives. The n-type organic semiconductor material is phenyl-61C-butyric acid methyl ester (PCBM), and/or its derivatives. The organic solvent is benzene, toluene, trimethylbenzene, xylene, dichloromethane, chloroform, dichloroethane, trichloroethane, tetrachloroethane, dichloroethylene, trichloroethylene, tetrachloroethylene, chlorobenzene, and/or o-dichlorobenzene. The photoactive layer comprises single organic active layer having blend of electron donor and electron acceptor, and photoactive layers having multilayer structures of donor layer/acceptor layer, donor layer/donor-acceptor blend layer/acceptor layer, donor-acceptor blend layer/electron-hole recombination layer/donor-acceptor blend layer, donor layer/acceptor layer/electron-hole recombination layer/donor layer/acceptor layer, or donor layer/donor-acceptor blend layer/acceptor layer/electron-hole recombination layer/donor layer/donor-acceptor blend layer/acceptor layer. The organic photovoltaic cell comprises transparent electrode layer, hole injection layer, photoactive layer, and electrode layer, formed on substrate. Preferred Contents: The photoactive solution comprises electron donor and electron acceptor (0.1-2.5 wt.%). The weight ratio of electron donor and electron acceptor is 1:0.3-1:5. Preferred Methods: The photoactive solution is obtained by dissolving electron donor and electron acceptor in an organic solvent. The atomizing is conducted by applying ultrasonic waves at 20-200 MHz to photoactive solution; or subjecting photoactive solution to pneumatic process using compressed air of 0.01-5 psi. The photoactive solution atomized is transferred to aerosol jet nozzle using inert gas as carrier gas.