10.48788/DVUA/A8DRDV Boiko Bohdan0009-0007-9359-1004(Sumy State University)Yermakov Maksym0000-0003-1170-6415(Sumy State University)Vasyliev Vitalii0000-0002-4601-856X(Sumy State University)Pshenychnyi Roman0000-0002-2560-9379(Sumy State University)Diachenko Oleksii0000-0003-2312-5255(Sumy State University) DataverseUA 2025 Transmittance spectra data of Cu₂Zn₁₋ₓMgₓSnS₄ nanoparticle solutions at x = 0.0, 0.1, 0.2, 0.3, 0.4, 0.5, and 0.6 in the wavelength range of 200-900 nm. Diachenko Oleksii(Sumy State University)