以巯基乙酸为稳定剂,在水溶液中加热CdCl2、HgCl2和NaHTe的混合物直接合成CdHgTe合金量子点.分别用荧光光谱、红外光谱、X射线衍射及透射电镜对其光谱性能、表面基团和结构形貌进行了表征.结果表明,合金量子点的发射波长在536到688 nm范围内连续可调,掺杂后量子点的发射光谱变宽,半高峰宽为70-90 nm;CdHgTe的荧光量子产率介于1.5%到6.7%之间;巯基与CdHgTe量子点表面的Cd2+离子发生键合,而使巯基乙酸结合于量子点表面;合金量子点具有闪锌矿结构;量子点分散性好,形貌呈颗粒状.
参考文献
| [1] | 刘晔,向蓉,黄菊,等(LIU Ye,et al).蹄化镉量子点光催化降解溴化乙锭的研究.化学学报(Acta Chim,Sinica),2008,66(2):276-80. |
| [2] | Krishnan S,Sanjeev G,Pattabi M,et al.Effect of eleCtron irradia-tion on the Properties of CdTe/CdS solar cells.Sor.Energ.Mat.Sol.C,2009,93(1):2-5. |
| [3] | Dong W,Li G,Wallg M,et al.CdTe QDs-based Prostate-specific antigen Probo for hulnan Prostate cancer cell imaging.J.Lumin.,2009,129(9):926-930. |
| [4] | ZhangY,Li Y D.Synthesis and chalacterization of monodisperse doPed zns nanospheres with enhanced thermal stability.J.Phys,Chem.B,2004,108(46):17805-17811. |
| [5] | SaPra S,Prakash A,Ghangrekar A,et al.Emission Propertles of manganese-doped ZnS nanocrystals.J.Phys.Chem.B,2005,109(5):1663-1668. |
| [6] | RaDla O E,Strouse G F.Synthesis and charaCteriZation of Eu-doped cadmium selenide nanocrystals.Nano.Lett.,2002,2(12):1443-1447. |
| [7] | Meulenberg R W,Hanif K M,willey T M,etal.Structure and composinon of Cu-doped CdSe nanocrystals using soft X-ray ab-sorption spectroscoPy.Nano.Lett.,2004,4(11):2277-2285. |
| [8] | MiluleC F V,Kuno M,Bennati M,et al.Organometallic synthesis and spectroscopic characterization of manganese-doped CdSe nanocrystals.J.Am.Chem.Soc.,2000,122(11):2532-2540. |
| [9] | Archer P I,Santangelo S A.Gamelin D R.Direct observation of sp-d exchange interaCtions in couoidal Mn2+-and Co2+-doped Cdse quantum dots.Nano.Lett.,2007,7(4):1037-1043. |
| [10] | Liu S M,Liu F Q,Guo H Q,et al.Surface states induced Photolu-minescence from Mn2+ doped CdS nanoparticles.Solid State Commun.,2000,115(11):615-618. |
| [11] | Tiseanu C,Mehra R K,Kho R,et al.Comparative study of time-resolved Photolununescence Properties of terbium-doped thiosalicylic-capped CdS and ZnS nanocrystals.J.Phys.chem.B,2003,107(44):12153-12156. |
| [12] | Zhou S M.Fabrication and oPticai Propertles of Sb-doPed CdS nanowires Matera.Lett.,2007,61(1):119-122. |
| [13] | Liu M,Man B Y,Lin X C,et al.Effects of Pressure on Pulsed laser dePosition of HgCdTe films.Mater.Chem.Phys.,2008,108(3):274-277. |
| [14] | Maiyk O.P.Charge carrier scatiering on the short-range potential of the Crystal lattice defects in ZnCdTe,ZnHgse and ZnHgTe.Physica B:Condensed Matter,2009,404(24):5022-5024. |
| [15] | Franc J,Horedysky P,Grill R,et al.Characterization of optlcal and electrical Properties of CdTe:Yb co-doped with Ge.J.Cryst.Growth,2006,286(2):384-388. |
| [16] | Shanmugan S,Balaji S,Mutharasu D.Synthesis and charaCteriZa-tion of 10%Sb doped CdTe thin films by stacked elemental layer (SEL)method.Mater.Lett.,2009,63(14):1189-1191. |
| [17] | Qian H F,Dong CQ,Peng J L,et al.High-quality aDd water-soluble near-infrared Photolununescent CdHgTe/CdS quantum dots prepared by adjusting size and composidon.J.Phys.Chem.C,2007,111(45):16852-16857. |
| [18] | Tian J N,Liu R J,Zhao Y C,et al.Controllable synthesis and cell-imaglng studies on CdTe quantum dots together caPped by glutathione and thioglycolic acid.J.Colloid Interf.Sci.,2009,336(2):504-509. |
| [19] | Yu W W,Qu LH,Guo W Z,et al.ExPerUnental determination of the extinction coefficient of CdTe,Cdse,and CdS nanocrystals.Chem.Mater.,2003,15(14):2853-2860. |
| [20] | Gaponik N L,Talapin D V,Weller H,et al.Thiol-caPPing of CdTe nanocrystals:an altemative to organometalllc synthetic routes.J.Phys.Chem.B,2002,106(29):7177-7185. |
| [21] | Park C,Yoon T H.L-Cysteine-induced photoluminescence enhancement of Cdse/Znse quantum dots in aqucous solution.Colloid Surfaces B,2010,75(2):472-477. |
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