Quantum Dots

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Quantum Dots (QDs) are nanoscale particles made of semiconductor materials. These particles exhibit quantum effects, which give them unique optical and electronic properties. The luminescence of quantum dots is a phenomenon caused by these quantum effects at the nanoscale. This luminescence allows quantum dots to emit light with a specific wavelength depending on their size. As a result, quantum dots are expected to find applications in various advanced technological fields.

Film Thickness and Quality | Luminescence Analysis

Film Thickness and Quality

In the advancement of thin film technology through miniaturization, we propose solutions for achieving high film deposition control, such as in-situ evaluation during the film deposition process and evaluation of thin films at the Ångström order level.

Thin film analysis in liquid: Analysis using a spectroscopic ellipsometer liquid measurement cell
In situ thin film evaluation: In-chamber wafer analysis by incorporating analytical parts into the chamber

Membrane information obtained using a spectroscopic ellipsometer

UVISEL ellipsometers have been used for the characterization of several systems of nanoparticles. This ellipsometric characterization involves the development of specific modeling tools available within DeltaPsi2 software.

Silicon nanoparticles (Si-nps) show different optical properties than bulk silicon. A strong correlation has been established between the particle size and the band-gap for example. These particular properties offer potentialities of application in optoelectronics, silicon based memories and third generation solar cells.

Luminescence Analysis

Quantum Dots (QDs) are nanoscale particles made of semiconductor materials. These particles exhibit so-called quantum effects, which give them unique optical and electronic properties. The luminescence of quantum dots is a unique phenomenon that is caused by quantum effects at the nanoscale. This makes it possible to emit light with a specific wavelength depending on quantum dots size, and is expected to find applications in a variety of advanced technological fields.