Dr. Olesya Yarema 4th price in D-ITET photo competition
Congrats to Olesya for receiving an award at the D-ITET Research Photo Competition 2019!
For the second time after 2016 a Research Photo Competition was organised at D-ITET. With more than 40 orginal and surprising submissions from all research areas at D-ITET we are proud to announce that Olesya Yarema was chosen 4th place.
More details: https://www.ee.ethz.ch/photo-competition-2019/submissions-2019.html
Semiconductor colloidal nanocrystals with luminescent properties (also known as quantum dots) are particularly interesting for the solid-state lighting and bio-medical applications. The color, which nanocrystals emit, is typically adjusted by their size, ranging from several 100s to several 1000s of atoms. Furthermore, if several elements can be combined in the nanocrystal structure, the color wavelength, purity, and efficiency all become a function of nanocrystal composi-tion. The photo shows colloidal solutions of three-component I-III-VI group semi-conductor nanocrystals, luminescing under the UV light illumination. Accurate and programmable engineering of such multicomponent quantum dots allows a selection of optimal size and optimal composition of nanocrystals for specific emission wavelength, ranging from yellow to near-infrared spectral region. With surface protection, the luminescence efficiency of 70-80% is achieved.