New spectroscopic Methods-Analysis of Nanoparticle Structure

Scientists conducted a joint research and have developed an 'Optical Nano-Crystallography Analysis Method' that can analyse the crystal structure of semiconductor nanoparticles only by measuring absorption spectrum. Semiconductor nanoparticles, widely known as quantum dots, are unique nanomaterial that’s optical and electrical properties are variously controlled by the size and shape of the particles. They are used in various science and technology fields, including LED, solar cell, photoelectric sensor, bimolecular imaging, etc.

Analysts propose simple examination technique to distinguish the structure of semiconductor nanoparticles in arrangement just by estimating ingestion range. It is relied upon to display another heading for the investigations of the structure and the properties of nanoparticles.

The II-VI and III-V compound semiconductors are polymorphic materials that can have different crystal structures of Zinc Blende structure and Wurtzite structure. To understand and control the optical, electrical, and morphological characteristics of these nanoparticles, it is essential to accurately and efficiently analyse the crystal structure of the nanoparticles.

However, the X-ray diffraction method, which is widely used for the existing crystal structure analysis of nanoparticles, requires expensive analysis equipment and needs a large amount of refined powdery nanoparticles, which makes the analysis process cumbersome and costly. Moreover, there is a limitation that it cannot be directly applied to nanoparticle samples that are usually synthesized, purified and stored in a solution.

This 'Nano-Optical Crystallography Analysis Method' will enable the precise observation of the crystal structure of nanoparticles of less than 2 nanometres, which is difficult to accurately analyse by X-ray diffraction technique. It can also rapidly predict the crystal structure of polytypic nanoparticles.

Sung Jun Lim, and Professor Andrew M. Smith of the University of Illinois, United States, conducted a joint research and has developed a 'Optical Nano-Crystallography Analysis Method' that can analyse the crystal structure of semiconductor nanoparticles only by measuring absorption spectrum.

This study has been published in the online edition of Nature Communications, the sister journal of Nature, an international academic journal.

For more info on these topics, please attend Crystallography Congress 2018 and share your research knowledge and latest updates and submit your research papers on crystallography, nanotechnology, material science and related topic please visit: https://crystallography.materialsconferences.com/call-for-abstracts.php

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Jessica Mark

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Email: novelmaterials@materialsconferences.org