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Optical study of ZnP2 nanoparticles in zeolite Na-X |
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| Authors: | O.A. Yeshchenko I.M. Dmitruk I.P. Pundyk |
| Affiliation: | a Physics Department, National Taras Shevchenko Kyiv University, 6 Akademik Glushkov prosp., 03127 Kyiv, Ukraine b Advanced Materials Research Institute, University of New Orleans, New Orleans, LA 70148, USA |
| Abstract: | Nanoparticles of the II-V semiconductor (ZnP2) were prepared and investigated. ZnP2 nanoparticles were incorporated into zeolite Na-X matrix. Absorption, diffuse reflection (DR) and photoluminescence (PL) spectra of ZnP2 nanoparticles were measured at the temperature of 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 five stable nanoparticles with size less than the size of zeolite Na-X supercage. We observed Stokes shift of the PL bands with respect to the absorption bands. This dependence of this Stokes shift on the particle size is nonmonotonic. |
| Keywords: | 71.24.+q 78.66.&minus w |
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