Organic solar cells have attracted a significant amount of attention due to the need to develop an inexpensive clean and sustainable renewable energy source. We report on the fabrication of poly [JV-9"-hepta-decanyl-2,7-carbazoie- alt-5,5-(4',7,-di-2-thienyl-2',1',3,-benzothiadiazole)]/[6,6]-phenyl-C71-butyric acid methyl ester blend active layer using airbrush spray coating method in mixed solvents. The surface morphology of the active layers deposited with different parameters was examined using Atomic Force Microscopy. The current density-voltage (7-V) characteristics of photovoltaic cells were measured under the illumination of simulated solar light with 100 mW/cm2 (AM 1.5G) by an Oriel 1000 W solar simulator. The power conversion efficiency of the solar cell is more than 5%. © 2015 Scientific Publishers. All rights reserved.