Inkjet Printed Hybrid Organic-Quantum Dots Solar Cells: Effects of Pre- And Post-Printing Activities

Printing has enabled researchers to pattern exact amount of materials on the proper location of different substrates and has been used extensively in electronics. Nevertheless, before, during, and after printing activities are crucial to accomplish final printed products with high-quality. This paper reports optimization of inkjet printing an organic solar cell. Pre- and post-printing activities such as heating the substrate during printing and annealing the film after the printing process were studied. Finally, quantum dots as semiconductor nanoparticles were used to enhance the photovoltaic efficiency of inkjet-printed solar cells. Based on our results any heat treatment during and after the printing process increased the surface roughness of the films and attenuated the device performance. Nevertheless, quantum dots/organic solar cells showed higher J
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than that of organic solar cells.