Colloidal nanocrystals comprise a large and important class of nanomaterials. Specifically, colloidal nanocrystals are 1 to 10 nanometer sized fragments of the corresponding bulk crystals and are typically synthesized and processed as solution species. The properties of colloidal nanocrystals are often found to be size dependent for several reasons:
- Their intrinsic physical sizes are comparable to the critical sizes of many important properties of a given class of functional materials, such as the wavelength of the electron wavefunction, the diameter of photo-generated excitons, the domain size of magnetic single domains.
- Their large surface-to-volume atom ratio alters the chemical potential of the structural units in comparison to the corresponding bulk crystals, which directly results in strongly size-dependent solubility of the nanocrystals.
- The presence of size dependent structures in the nanometer range, including electron band configuration, surface structure and reconstruction, and unique crystal structures.
This variety of size dependent properties coupled with solution-based processability make colloidal nanocrystals attractive for a number of applications including light conversion, which can convert blue light to a redder part of the spectrum, biomarkers and imaging, solar cell development, and lighting and displays. The quantum dot size and composition can be manipulated to create an emission spectrum for any range in the visible light region.
The luminescence properties of quantum dots include both photoluminescence and electroluminescence, where photons and electrons, respectively, cause the quantum dot to emit light. Electroluminescent properties in quantum dots allow for the production of QLED materials which can be used to manufacture a variety of display screens and devices. This is just one of the ways in which NN-Labs® uses their nanomaterials to help industries move towards the future.
NN-Labs® is dedicated to providing the highest quality QSHIFT® nanoparticles made from our patented and well known greener synthesis methods, providing nanoparticles with various compositions and solvents. All of our quantum dots demonstrate excellent size distribution, emission, brightness, and purity enabling their full potential to be realized.