Armin Fischer

TL;DR: The tailored selection of absorption onset energy through the quantum size effect, combined with deliberate engineering of the sequence of nanoparticle fusing and surface trap functionalization, underlie the superior performance achieved in this readily fabricated family of devices.

TL;DR: An atomic ligand strategy is established that makes use of monovalent halide anions to enhance electronic transport and successfully passivate surface defects in PbS CQD films that shows up to 6% solar AM1.5G power-conversion efficiency.

TL;DR: The density of midgap trap states in CQD solids is quantified and shown to be limited by electron-hole recombination due to these states, and a robust hybrid passivation scheme is developed that can passivate trap sites that are inaccessible to much larger organic ligands.

TL;DR: It is shown that it is possible to introduce specific chemical species onto the surfaces of colloidal quantum dots to produce only a single, desired trap state having a carefully selected lifetime, and a device is demonstrated that exhibits an attractive photoconductive gain combined with a response time useful in imaging.

TL;DR: This work reports the self-assembly of quantum dot complexes using cadmium telluride nanocrystals capped with specific sequences of DNA to create a variety of rationally designed assemblies, including cross-shaped complexes containing three different types of dots.