In the present study we analyzed an influence of adding of Cu2-xSe nanocrystals (NCs) to PbS quantum dots (QDs) prepared in colloidal solution, in organic matrices and on glass substrates. We found that photoluminescence (PL) signal from QDs is considerably affected by Cu2-xSe NCs, which results in slowdown of PL decay and change of PL intensity. The behavior of PL signal drastically depends on the surrounding matrix and QD-NC separation distance. Despite Cu2-xSe NCs provide an enhancement of PbS QDs PL, they also caused and acceleration of QD degradation when QDs and NCs interact.Keywords: Photoluminescence, quantum dots, PbS, LSPR, doped semiconductor nanocrystals
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