中文摘要：

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.

英文摘要：

CdHgTe alloyed quantum dots（QDs） were directly synthesized in aqueous solution by heating a mixture of CdCl2,HgCl2 and NaHTe in the presence of thioglycolic acid as stabilizer.The obtained QDs were characterized by fluorescent spectroscope,fourier transform infrared spectroscope（FTIR）,X-ray powder diffraction（XRD） and transmission electron microscope（TEM）,respectively.The results show that the technique lead to the formation of CdHgTe alloyed QDs with broad fluorescence full-width at half-maximum（70？90 nm）,moderate photoluminescence quantum yield（1.5%？6.7%）,and a broad emission spectra tunable from 536 nm to 688 nm.The water-soluble alloyed QDs with thioglycolic acid modification for CdHgTe are of zinc-blended crystal structure in a sphere-like shape.