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.

Solution-processed Fe<sub>3</sub>O<sub>4</sub> magnetic nanoparticle thin film aligned by an external magnetostatic field as a hole extraction layer for polymer solar cells

247th National Meeting (2014)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.

Solution-processed Fe3O4 magnetic nanoparticle thin film aligned by an external magnetostatic field as a hole extraction layer for polymer solar cells

Solution-processed Fe₃O₄ magnetic nanoparticle thin film aligned by an external magnetostatic field as a hole extraction layer for polymer solar cells