CdS：Fe掺杂纳米晶体的水相合成

摘要

在水溶液中，将Fe2＋离子掺杂在CdS纳米晶体的内部，并利用微波辐射促进Fe2＋离子向外扩散和纳米晶体的生长，制备出荧光发射波长在520～650nm范围内连续可调的CdS：Fe纳米晶体．掺杂纳米晶体具有立方闪锌矿结构，晶体结构完整，粒度分布系数为9．7％，并具有高达35％的荧光量子产率和良好的光化学稳定性．%The Fe (II) ions were doped into the CdS nanoerystals in the water solution, and they came outward under the microwave irradiation. With the growth of CdS : Fe nanocrystals, the fluorescence scope of doped nanocrystals shifted from 520 nm to 650 nm. The CdS : Fe nanocrystals had good cubic zinc blende structure and the coefficient of particle size distribution was 9.7%. Meanwhile, the quantum yield of CdS: Fe nanoerystals was near to 35% and chemical/photochemical stability of NCs were found to be excellent.