Analysis of Particle Size Distributions of Quantum Dots: From Theory to Application

Analysis of Particle Size Distributions of Quantum Dots: From Theory to Application
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量子点粒径分布分析:从理论到应用

DOI:
10.14356/kona.2016012
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发表时间:
2016
影响因子:
4.1
通讯作者:
D. Segets
D. Segets
中科院分区:
材料科学2区
文献类型:
--
作者:
D. Segets

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由于其独特的光电特性和明显的结构-性质关系,被称为量子点(QDs)的小的、量子受限的半导体纳米粒子是非常重要的材料系统。量子点应用在薄膜和太阳能电池等新兴领域。在这篇综述中,不同的表征技术的粒度分布(psd)将被总结,特别强调的策略开发和建议在过去从光学吸收光谱得出数据的样品的分散性。后者根据不同大小的胶体色散的相对丰度使用叠加的单个光学贡献的假设。在第二部分中,将展示详细的PSD分析在深入了解典型QD过程(如通过尺寸选择沉淀(SSP)分类)方面的巨大潜力。预计这将导致对胶体表面性质的更好理解,这对发展无假设相互作用模型具有重要意义。
Small, quantum-confined semiconductor nanoparticles, known as quantum dots (QDs) are highly important material systems due to their unique optoelectronic properties and their pronounced structure-property relationships. QD applications are seen in the emerging fields of thin films and solar cells. In this review, different characterization techniques for particle size distributions (PSDs) will be summarized with special emphasis on strategies developed and suggested in the past to derive data on the dispersity of a sample from optical absorbance spectra. The latter use the assumption of superimposed individual optical contributions according to the relative abundance of different sizes of a colloidal dispersion. In the second part, the high potential of detailed PSD analysis to get deeper insights of typical QD processes such as classification by size selective precipitation (SSP) will be demonstrated. This is expected to lead to an improved understanding of colloidal surface properties which is of major importance for the development of assumption-free interaction models.
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影响因子: 17.1
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