Polymer Engineering Faculty Research


Solution-Processed Fe3O4 Magnetic Nanoparticle Thin Film Aligned by an External Magnetostatic Field as a Hole Extraction Layer for Polymer Solar Cells

Document Type

Conference Proceeding

Publication Date

Spring 3-16-2014


We report, for the first time, the effect of solution-processed Fe3O4 magnetic nanoparticles (MNP) thin film, and Fe3O4 MNP thin film aligned by an external magnetostatic field, used as a hole extraction layer (HEL), respectively, in polymer solar cells (PSCs). The thin film of Fe3O4 MNP shows a smoother surface, better transparency and high electrical conductivity than that of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) thin layer. Moreover, thin film of Fe3O4 MNP aligned by an external magnetostatic field possesses an enhanced electrical conductivity, lower internal series resistance and thus leading to greater than 13% enhancement in power conversion efficiency (PCE) of PSCs than those using PEDOT:PSS thin film. It was also found that PSCs incorporated with Fe3O4 MNP shows better stability as compared with those using PEDOT:PSS as an anode buffer layer. These results demonstrated that the utilization of Fe3O4 MNP as a HEL in PSCs blaze a trail to achieve high efficient and long-time stable devices.

Publication Title

Abstracts of Papers of the American Chemical Society