The photoluminescence and photostability of CdTe/CdS nanoparticles encapsulated in matrices of potassium dihydrogen orthophosphate, potassium bromide, calcium carbonate, and barium sulfate were studied. The greatest photostability was found for a composite with a monocrystalline KH2PO4 matrix. This stability is related to the hindered diffusion of oxygen to the implanted CdTe/CdS quantum dots.
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Vorontsov, D.S., Okrepka, G.M. & Khalavka, Y.B. Effect of Nature of the Inorganic Salt Matrix on the Optical Properties and Photostability of CdTe/CdS Quantum Dots. Theor Exp Chem 55, 110–114 (2019). https://doi.org/10.1007/s11237-019-09601-w