Plasmonic giant quantum dots: hybrid nanostructure

Plasmonic giant quantum dots: hybrid nanostructures for truly simultaneous optical imaging, photothermal effect and thermometry
http://pubs.rsc.org/en/content/articlehtml/20...c5sc00020c

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Elucidation of Two Giants: Challenges to Thick-Shell Synthesis in CdSe/ZnSe and ZnSe/CdS Core/Shell Quantum Dots
http://pubs.acs.org/doi/abs/10.1021/jacs.5b00313



High-efficiency light-emitting devices based on quantum dots with tailored nanostructures

We report a full series of blue, green and red quantum-dot-based light-emitting devices (QD-LEDs), all with high external quantum efficiencies over 10%. We show that the fine nanostructure of quantum dots—especially the composition of the graded intermediate shell and the thickness of the outer shell—plays a very important role in determining QD-LED device performance due to its effects on charge injection, transport and recombination. These simple devices have maximum current and external quantum efficiencies of 63 cd A−1 and 14.5% for green QD-LEDs, 15 cd A−1 and 12.0% for red devices, and 4.4 cd A−1 and 10.7% for blue devices, all of which are well maintained over a wide range of luminances from 102 to 104 cd m−2. All the QD-LEDs are solution-processed for ease of mass production, and have low turn-on voltages and saturated pure colours. The green and red devices exhibit lifetimes of more than 90,000 and 300,000 h, respectively.
http://www.nature.com/nphoton/journal/v9/n4/f...15.36.html