study on the preparation, properties, and performance of new superparamagnetic nanocomposite of pani-fe3o4-tio2 in polymer solar cells

In this paper, a green simple and insitu approach for synthesizing pani-fe3o4-tio2 nanocomposite without the need for an organic solvent is described. the nanocomposite s structural, thermal, morphological, optical, electrochemical, and photovoltaic characteristics were studied. due to a significant spin-orbit coupling formed by fe3o4 in the pani-fe3o4-tio2 nanocomposite, the gap energy of the nanocomposite revealed an indirect transfer. the p-n heterojunction solar cell based on this nanocomposite have been fabricated with device structures of fto│tio2│pani-fe3o4-tio2│al. pani-fe3o4-tio2 nanocomposite exhibited a good device performance with rather than high power conversion efficiency (pce). it can be due to the various effects such as the forming of p–n hetero-junction between pani and tio2, the magnetic field of fe3o4, spin-orbit coupling, and/or singlet fission that caused an increase in the population of triplet state and consequently limit the recombination process.