Physics – Condensed Matter – Materials Science
Scientific paper
2004-03-19
Physics
Condensed Matter
Materials Science
Submitted to Microporous and Mesoporous Materials
Scientific paper
10.1016/j.ssc.2004.10.007
We report that for the first time the nanoparticles of II-V semiconductor (ZnP2) were prepared and studied. ZnP2 nanoparticles were prepared by incorporation into zeolite Na-X matrix. Absorption, diffuse reflection (DR) and photoluminescence (PL) spectra of the ZnP2 nanoclusters incorporated into the supercages of zeolite Na-X were measured at the temperature 77 K. Five bands B1-B5 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 B1-B5 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.
Barnakov Yu. A.
Dmitruk Igor. M.
Koryakov S. V.
Yeshchenko Oleg A.
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