Departamento de Fisica, ICEx, Universidade Federal de Minas Gerais, C. P. 702, 30123-970, Belo Horizonte, Minas Gerais, Brazil.
J Chem Phys. 2010 Jan 7;132(1):014107. doi: 10.1063/1.3280074.
A theoretical and experimental study of isolated nanoparticles of II-VI semiconductor materials has been done. Using the framework of the effective mass model, the optical absorption spectrum of distributions of spherical quantum dots, freestanding, and under compressive or tensile stress, has been examined theoretically. The theoretical results allow one to foresee the absorption spectra of quantum dots made of a series of materials and having any size. The syntheses of colloidal quantum dots of CdS and CdSe has also been performed through wet chemical routes and characterized by means of optical techniques. The values of the strains in the synthesized quantum dots were inferred from a correlation established between the theoretical and the experimental results.
对 II-VI 族半导体材料孤立纳米粒子进行了理论和实验研究。使用有效质量模型的框架，从理论上研究了自由态和在压缩或拉伸应力下的球形量子点分布的光学吸收光谱。理论结果可以预测由一系列材料和任意尺寸的量子点的吸收光谱。通过湿化学途径合成了 CdS 和 CdSe 胶体量子点，并通过光学技术对其进行了表征。通过建立理论和实验结果之间的相关性，从合成量子点的应变值推断出来。
