Lifetime blinking in nonblinking nanocrystal quantum dots
نویسندگان
چکیده
منابع مشابه
Lifetime blinking in nonblinking nanocrystal quantum dots
Nanocrystal quantum dots are attractive materials for applications as nanoscale light sources. One impediment to these applications is fluctuations of single-dot emission intensity, known as blinking. Recent progress in colloidal synthesis has produced nonblinking nanocrystals; however, the physics underlying blinking suppression remains unclear. Here we find that ultra-thick-shell CdSe/CdS nan...
متن کاملMechanisms of fluorescence blinking in semiconductor nanocrystal quantum dots.
The light-induced spectral diffusion and fluorescence intermittency (blinking) of semiconductor nanocrystal quantum dots are investigated theoretically using a diffusion-controlled electron-transfer (DCET) model, where a light-induced one-dimensional diffusion process in energy space is considered. Unlike the conventional electron-transfer reactions with simple exponential kinetics, the model n...
متن کاملCollodial Nanocrystal Quantum Dots
This project is studying photovoltaic solid state devices utilizing semiconducting colloidal nanocrystal quantum dots. Objectives include enabling fabrication of hybridquantum dot (QD) planar heterojunction PVs, improving morphology of printed QD films, and scale-up of QD synthesis. Quality, Productivity and Accomplishments (Average Rating 3.2) Rating Comments 3.0 Well-qualified team led by Bul...
متن کاملNanocrystal Quantum Dots
214 Semiconductor lasers are ubiquitous in modern society and play a key role in technologies ranging from CD players to optical telecommunications. Current-generation lasers have high power output and low lasing thresholds, are stable over a wide range of temperatures, and are cheap and easy to produce. Still, there is room for improvement. We are developing a new type of laser based on ultras...
متن کاملSuppressed blinking and auger recombination in near-infrared type-II InP/CdS nanocrystal quantum dots.
Nonblinking excitonic emission from near-infrared and type-II nanocrystal quantum dots (NQDs) is reported for the first time. To realize this unusual degree of stability at the single-dot level, novel InP/CdS core/shell NQDs were synthesized for a range of shell thicknesses (~1-11 monolayers of CdS). Ensemble spectroscopy measurements (photoluminescence peak position and radiative lifetimes) an...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature Communications
سال: 2012
ISSN: 2041-1723
DOI: 10.1038/ncomms1916