ZnSe∶Mn nanocrystals were grown by chemical vapour transport method using the matrix of SiO2 aerogels. The cubic structure of the nanocrystals was confirmed by powder X-ray diffraction (XRD) and electron diffraction (ED) studies. The size of the crystals was observed using transmission electron microscope (TEM). The oxidation state of Mn in ZnSe nanocrystal was found using electron spin resonance (ESR) spectrum. The room temperature luminescence measurements show the peaks corresponding to both bandgap of the material and Mn in ZnSe.
参考文献
| [1] | Itoh S.;Ishibashi A.;Nakano K. .Current status and future prospects of ZnSe-based light-emitting devices[J].Journal of Crystal Growth,2000(0):1029-1034. |
| [2] | Chimczak E;Allen J W .Energy transfer in the electroluminescence of ZnS∶Mn and ZnSe∶Mn driven by short voltage pulses[J].Journal of Physics D:Applied Physics,1985,18:951. |
| [3] | Jones G;Woods J .The luminescence of manganese-doped zinc selenide[J].Journal of Physics D:Applied Physics,1973,6:1640. |
| [4] | Jin CX.;Ling Z.;Wang J.;Hou XY.;Segawa Y.;Wang X.;Zhang BP. .GROWTH AND OPTICAL CHARACTERIZATION OF DILUTED MAGNETIC SEMICONDUCTOR ZN1-XMNXSE/ZNSE STRAINED-LAYER SUPERLATTICES[J].Journal of Applied Physics,1997(8 Pt.2b):5148-5150. |
| [5] | Furdyna J K;Samranth N .Magnetic properties of diluted magnetic semiconductors:A review[J].Journal of Applied Physics,1987,61:3526. |
| [6] | Suyver JF.;Kelly JJ.;Meijerink A. .Temperature-induced line broadening, line narrowing and line shift in the luminescence of nanocrystalline ZnS : Mn2+[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2003(3):187-196. |
| [7] | Heulings H;Huang X;Li J et al.Mn-substituted inorganic-organic hybrid materials based on ZnSe∶nanostructures that may lead to magnetic semiconductors with a strong quantum confinement effect[J].Nano Letters,2001,1:521. |
| [8] | Wang C;Zhang W X;Qian X F et al.An aqueous approach to ZnSe and CdSe semiconductor nanocrystals[J].Mater Chem Phys,1999,60:99. |
| [9] | Donega CD.;Bol AA.;Meijerink A. .Time-resolved luminescence of ZnS : Mn2+ nanocrystals[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2002(2/4):87-93. |
| [10] | Sarigiannis D;Peck J D;Kioseoglou G et al.Characterization of vapor-phase-grown ZnSe nanoparticles[J].Applied Physics Letters,2002,80:4024. |
| [11] | Zhang X T;Ip K M;Liu Z et al.Structure and photoluminescence of ZnSe nanoribbons grown by metal organic chemical vapor deposition[J].Applied Physics Letters,2004,84:2641. |
| [12] | Bera S K;Choudhuri S;Pal A K .Electron transport properties of CdTe nanocrystals in SiO2/CdTe/SiO2 thin film structures[J].Thin Solid Films,2002,415:68. |
| [13] | Lipovskii AA.;Petrikov VD.;Kolobkova EV. .Formation of II-VI nanocrystals in a novel phosphate glass[J].Journal of Crystal Growth,1998(0):365-369. |
| [14] | Yang P.;Lu MK.;Song CF.;Zhou GJ.;Ai ZP.;Xu D.;Yuan DR.;Cheng XF. .Strong visible-light emission of ZnS nanocrystals embedded in sol-gel silica xerogel[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2003(2):149-153. |
| [15] | Gonzalez Beerman P A;McGarvey B R;Muralidharan S et al.EPR spectra of Mn2+-doped ZnS quantum dots[J].CHEMISTRY OF MATERIALS,2004,16:915. |
| [16] | Senthil Kumar O;Soundeswaran S;Dhanasekaran R .Thermodynamic calculations and growth of ZnSe single crystals by chemical vapor transport technique[J].Crystal Growth and Design,2002,2:585. |
| [17] | Taghavinia N.;Yao T. .ZnS nanocrystals embedded in SiO2 matrix[J].Physica, E. Low-dimensional systems & nanostructures,2004(1):96-102. |
| [18] | Manzoor K.;Vadera SR.;Kumar N.;Kutty TRN. .Synthesis and photoluminescent properties of ZnS nanocrystals doped with copper and halogen[J].Materials Chemistry and Physics,2003(3):718-725. |
| [19] | Liu CX.;Xu W.;Liu JY. .The g factor-shift in ZnS : Mn2+ nanocrystals/pyrex glasses composites[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2000(1):78-81. |
| [20] | Kawano K;Nakata R;Sumita M .Electron spin resonance study of laser-annealed (Zn,Mn)O ceramics[J].Applied Physics Letters,1991,58:1742. |
| [21] | Tanaka M. .Photoluminescence properties of Mn2+-doped II-VI semiconductor nanocrystals[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2002(1/4):163-173. |
| [22] | Leppert VJ.;Kumbhojkar NR.;Risbud SH.;Mahamuni S. .Structural and optical characteristics of ZnSe nanocrystals synthesized in the presence of a polymer capping agent[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,1998(1):89-92. |
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