Zhang Jie, et al. “The Synthesis and Spectral Characterization of Copper Sulfide Nanofluid in a Spectral Splitting PV T System”. International Journal of Nanoelectronics and Materials (IJNeaM) , vol. 19, no. 1, Mar. 2026, pp. 177-82, doi:10.58915/ijneam.v19i1.3061.