Priyadharshini, G., et al. “Development of Platinum-Free Yttrium-Ion-Substituted NiS-Graphene Nanocomposites for DSSC and Photocatalytic Applications”. Asian Journal of Chemistry, vol. 36, no. 7, June 2024, pp. 1681-92, doi:10.14233/ajchem.2024.31863.