Effects of chemical affinity and injection speed of Se and Te precursors on the development kinetic and optical properties of ternary alloyed CdTe1−xSex nanocrystals
作者:P.T. Tho、N.D. Vinh、H.T. Van、P.M. Tan、V.X. Hoa、N.T. Kien、N.T. Hien、N.T.K. Van、N.X. Ca
DOI:10.1016/j.jpcs.2020.109332
日期:2020.4
fabrication of ternary alloyed CdTe1−xSex nanocrystals (NCs) is strongly influenced by the chemical affinities of Se2− and Te2− ions, which are very different from each other. Based on the synthesis procedure, we discovered two possible structures of the alloyed CdTe1−xSex NCs: homogeneous alloyed and gradient alloyed. It was clear that the formation of two different alloyed NC types caused the different
摘要 三元合金化 CdTe1−xSex 纳米晶体 (NCs) 的制备受到 Se2− 和 Te2− 离子化学亲和力的强烈影响,它们彼此非常不同。基于合成程序,我们发现了合金化 CdTe1-xSex NCs 的两种可能结构:均质合金化和梯度合金化。很明显,在先前的研究中,两种不同的合金化 NC 类型的形成导致了三元合金化 CdTe1-xSex NCs 发射光谱的不同结果。仔细的光致发光和拉曼散射研究表明,CdTe1-xSex NCs 的均匀合金结构或梯度合金结构的形成取决于 Se2- 和 Te2- 离子的注入方法。