Improving quantum dot interactions, one layer at a time

Science Daily  November 20, 2020
Controlling interaction between quantum dots could greatly improve charge transport, leading to more efficient solar cells. Researchers fabricated CdTe quantum dot superlattices via the layer-by-layer assembly of positively charged polyelectrolytes and negatively charged CdTe quantum dots to control the dimension of the quantum resonance by independently changing the distances between quantum dots in the stacking (out-of-plane) and in-plane directions. They experimentally verified the miniband formation. The fabrication method can be used with other types of water-soluble quantum dots and nanoparticles. Combining different types of semiconductor quantum dots, or combining semiconductor quantum dots with other nanoparticles, will expand the possibilities of new material design…read more. Open Access TECHNICAL ARTICLE

Schematics of quantum dot (QD) layer structures in which the 1D, 2D, and 3D quantum resonances occur. Credit: Nature Communications volume 11, Article number: 5471 (2020)

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