纳米磷化铟的制备及其表征

Synthesis and Characterization of Indium Phosphide Nanocrystallite

报道了以Na、P和InCl3.4H2O为原料,以二甲苯为溶剂,用改进的常压有机溶剂回流退火法合成纳米磷化铟晶粒的方法,并与已有的其他方法进行了比较.在二甲苯溶液中合成了纳米InP,并用X射线衍射、透射电子显微镜、激光拉曼光谱和吸收光谱对合成产物的结构和性能进行了表征和分析.研究结果表明,合成的晶粒具有立方闪锌矿结构,平均粒径为55 nm,最小粒径为3 nm,晶格常数为5.869×10-10m,具有明显的量子尺寸效应,而且晶粒的完整性好,产率高.

InP nanocrystallite was synthesized by refluxing and annealing with organic solvent under ordinary pressure from metal Na, yellow phosphorus and InCl3 · 4H2O with appropriate amount of dimethylbenzene as solvent, and compared with the results in the former reports. The synthesized InP powder was investigated and characterized via X-ray powder diffraction, transmission electron microscopy, Raman spectrum and absorption spectrum. The nanocrystallite demonstrates a cubic zinc blende structure, whose average size reaches to 55 nm, the minimum size is merely 3 nm, and the lattice constant is 5. 869×10^-10 m. It possesses an obvious quantum size effect with fine crystallinity.