منابع مشابه
Cu Vacancies Boost Cation Exchange Reactions in Copper Selenide Nanocrystals
We have investigated cation exchange reactions in copper selenide nanocrystals using two different divalent ions as guest cations (Zn(2+) and Cd(2+)) and comparing the reactivity of close to stoichiometric (that is, Cu2Se) nanocrystals with that of nonstoichiometric (Cu(2-x)Se) nanocrystals, to gain insights into the mechanism of cation exchange at the nanoscale. We have found that the presence...
متن کاملHighly Luminescent, Size- and Shape-Tunable Copper Indium Selenide Based Colloidal Nanocrystals
We report a simple, high-yield colloidal synthesis of copper indium selenide nanocrystals (CISe NCs) based on a silylamide-promoted approach. The silylamide anions increase the nucleation rate, which results in small-sized NCs exhibiting high luminescence and constant NC stoichiometry and crystal structure regardless of the NC size and shape. In particular, by systematically varying synthesis t...
متن کاملWhite-light emission from magic-sized cadmium selenide nanocrystals.
Magic-sized cadmium selenide (CdSe) nanocrystals have been pyrolytically synthesized. These ultra-small nanocrystals exhibit broadband emission (420-710 nm) that covers most of the visible spectrum while not suffering from self absorption. This behavior is a direct result of the extremely narrow size distribution and unusually large Stokes shift (40-50 nm). The intrinsic properties of these ult...
متن کاملA Single Electron Transistor Made From Lead Cadmium Selenide Nanocrystals
With the miniaturization of transistor size, fabrication of transistor with lithography technique is a foreseen problem. It is possible to routinely create semiconductor nanocrystals whose dimensions are much smaller than those can be realized by lithography techniques using colloidal chemistry. The size of the nanocrystals can be varied easily by varying the process parameters to study the qua...
متن کاملSelective Growth of Gold onto Copper Indium Sulfide Selenide Nanoparticles
Hybrid nanostructures are interesting materials for numerous applications in chemistry, physics, and biology, due to their novel properties and multiple functionalities. Here, we present a synthesis of metal–semiconductor hybrid nanostructures composed of nontoxic I-III-VI semiconductor nanoparticles and gold. Copper indium sulfide selenide (CuInSSe) nanocrystals with zinc blende structure and ...
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ژورنال
عنوان ژورنال: Angewandte Chemie International Edition
سال: 2018
ISSN: 1433-7851,1521-3773
DOI: 10.1002/anie.201803358