Optical properties and structure of most stable subnanometer (ZnAs2)n clusters
ZnAs2 nanoclusters were fabricated by incorporation into pores of zeolite Na–X and by laser ablation. Absorption and photoluminescence spectra of ZnAs2 nanoclusters in zeolite were measured at the temperatures of 4.2, 77 and 293K. Both absorption and PL spectra consist of two bands which demonstrate...
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| Veröffentlicht in: | Physica. B, Condensed matter Condensed matter, 2005-11, Vol.368 (1-4), p.8-15 |
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| container_title | Physica. B, Condensed matter |
| container_volume | 368 |
| creator | Yeshchenko, O.A. Dmitruk, I.M. Koryakov, S.V. Galak, M.P. Pundyk, I.P. Hohlova, L.M. |
| description | ZnAs2 nanoclusters were fabricated by incorporation into pores of zeolite Na–X and by laser ablation. Absorption and photoluminescence spectra of ZnAs2 nanoclusters in zeolite were measured at the temperatures of 4.2, 77 and 293K. Both absorption and PL spectra consist of two bands which demonstrate the blue shift from the line of free exciton in 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 (ZnAs2)6 and (ZnAs2)8 with binding energies of 7.181 and 8.012eV per (ZnAs2)1 formula unit, respectively. Therefore, we attributed two bands observed in absorption and PL spectra to these stable clusters. The measured Raman spectrum of ZnAs2 clusters in zeolite was explained to be originated from (ZnAs2)6 and (ZnAs2)8 clusters as well. The PL spectrum of ZnAs2 clusters produced by laser ablation consists of a single band which has been attributed to the emission of (ZnAs2)8 cluster. |
| doi_str_mv | 10.1016/j.physb.2005.06.030 |
| format | Article |
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Absorption and photoluminescence spectra of ZnAs2 nanoclusters in zeolite were measured at the temperatures of 4.2, 77 and 293K. Both absorption and PL spectra consist of two bands which demonstrate the blue shift from the line of free exciton in 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 (ZnAs2)6 and (ZnAs2)8 with binding energies of 7.181 and 8.012eV per (ZnAs2)1 formula unit, respectively. Therefore, we attributed two bands observed in absorption and PL spectra to these stable clusters. The measured Raman spectrum of ZnAs2 clusters in zeolite was explained to be originated from (ZnAs2)6 and (ZnAs2)8 clusters as well. 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B, Condensed matter</title><description>ZnAs2 nanoclusters were fabricated by incorporation into pores of zeolite Na–X and by laser ablation. Absorption and photoluminescence spectra of ZnAs2 nanoclusters in zeolite were measured at the temperatures of 4.2, 77 and 293K. Both absorption and PL spectra consist of two bands which demonstrate the blue shift from the line of free exciton in 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 (ZnAs2)6 and (ZnAs2)8 with binding energies of 7.181 and 8.012eV per (ZnAs2)1 formula unit, respectively. Therefore, we attributed two bands observed in absorption and PL spectra to these stable clusters. The measured Raman spectrum of ZnAs2 clusters in zeolite was explained to be originated from (ZnAs2)6 and (ZnAs2)8 clusters as well. 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B, Condensed matter</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yeshchenko, O.A.</au><au>Dmitruk, I.M.</au><au>Koryakov, S.V.</au><au>Galak, M.P.</au><au>Pundyk, I.P.</au><au>Hohlova, L.M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Optical properties and structure of most stable subnanometer (ZnAs2)n clusters</atitle><jtitle>Physica. B, Condensed matter</jtitle><date>2005-11-01</date><risdate>2005</risdate><volume>368</volume><issue>1-4</issue><spage>8</spage><epage>15</epage><pages>8-15</pages><issn>0921-4526</issn><eissn>1873-2135</eissn><abstract>ZnAs2 nanoclusters were fabricated by incorporation into pores of zeolite Na–X and by laser ablation. Absorption and photoluminescence spectra of ZnAs2 nanoclusters in zeolite were measured at the temperatures of 4.2, 77 and 293K. Both absorption and PL spectra consist of two bands which demonstrate the blue shift from the line of free exciton in 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 (ZnAs2)6 and (ZnAs2)8 with binding energies of 7.181 and 8.012eV per (ZnAs2)1 formula unit, respectively. Therefore, we attributed two bands observed in absorption and PL spectra to these stable clusters. The measured Raman spectrum of ZnAs2 clusters in zeolite was explained to be originated from (ZnAs2)6 and (ZnAs2)8 clusters as well. The PL spectrum of ZnAs2 clusters produced by laser ablation consists of a single band which has been attributed to the emission of (ZnAs2)8 cluster.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.physb.2005.06.030</doi><tpages>8</tpages></addata></record> |
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| subjects | A. Nanostructures A. Semiconductors B. Nanofabrications Condensed matter: electronic structure, electrical, magnetic, and optical properties D. Optical properties Exact sciences and technology Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures Physics |
| title | Optical properties and structure of most stable subnanometer (ZnAs2)n clusters |
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