We report that for the first time the nanoparticles of II-V semiconductor (ZnP 2 ) were prepared and studied. ZnP 2 nanoparticles were prepared by incorporation into zeolite Na-X matrix. Absorption, diffuse reflection (DR) and photoluminescence (PL) spectra of the ZnP 2 nanoclusters incorporated into the supercages of zeolite Na-X were measured at the temperature 77 K. Five bands B 1 -B 5 are observed in both the DR and PL spectra demonstrating the blue shift from the line of free exciton in bulk crystal. We attribute the B 1 -B 5 bands to some stable nanoclusters with size less than the size of zeolite Na-X supercage. We observed Stokes shift of the PL bands from the respective absorption bands.The nonmonotonic character of its dependence on the cluster size can be explained as the result of competition of the Frank-Condon shift and the shift due to electronic relaxation.
CdP 2 nanoclusters were fabricated by incorporation into pores of zeolite Na-X and by laser ablation. Absorption and photoluminescence (PL) spectra of CdP 2 nanoclusters in zeolite were measured at the temperatures of 4.2, 77 and 293 K. Both absorption and PL spectra consist of two bands blue shifted with respect to bulk crystal. We performed the calculations aimed to find the most stable clusters in the size region up to size of the zeolite Na-X supercage. The most stable clusters are (CdP 2 ) 6 and (CdP 2 ) 8 with binding energies of 9.30 eV and 10.10 eV per (CdP 2 ) 1 formula unit respectively. Therefore, we attributed two bands observed in absorption and PL spectra to these stable clusters. The Raman spectrum of CdP 2 clusters in zeolite was explained to be originated from (CdP 2 ) 6 and (CdP 2 ) 8 clusters as well. The PL spectrum of CdP 2 clusters produced by laser ablation consists of the asymmetric band with low-energy tail that has been attributed to emission of both (CdP 2 ) 8 cluster and CdP 2 microcrystals.
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