Physics – Condensed Matter – Materials Science
Scientific paper
2005-09-21
Physics
Condensed Matter
Materials Science
Accepted for publication in Journal of Physical Chemistry B
Scientific paper
CdP4 nanoclusters were fabricated by incorporation into the pores of zeolite Na-X and by deposition of the clusters onto a quartz substrate using laser ablation-evaporation technique. Absorption and photoluminescence (PL) spectra of CdP4 nanoclusters in zeolite were measured at the temperatures of 4.2, 77 and 293 K. Both absorption and PL spectra consist of two blue shifted bands. We performed DFT calculations to determine the most stable clusters configuration in the size region up to size of the zeolite Na-X supercage. The bands observed in absorption and PL spectra were attributed to emission of (CdP4)3 and (CdP4)4 clusters with binding energies of 3.78 eV and 4.37 eV per atom respectively. The Raman spectrum of CdP4 clusters in zeolite proved the fact of creation of (CdP4)3 and (CdP4)4 clusters in zeolite pores. The PL spectrum of CdP4 clusters produced by laser ablation consists of single band that was attributed to emission of (CdP4)4 cluster.
Dmitruk Igor. M.
Galak M. P.
Koryakov S. V.
Yeshchenko Oleg A.
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