Results 11 to 20 of about 1,293,225 (284)
Persistent Inter-Excitonic Quantum Coherence in CdSe Quantum Dots [PDF]
The Journal of Physical Chemistry Letters, 2014 The creation and manipulation of quantum superpositions is a fundamental goal for the development of materials with novel optoelectronic properties. In this letter, we report persistent (~80 fs lifetime) quantum coherence between the 1S and 1P excitonic ...
J. Caram +8 more
semanticscholar +5 more sources
Photocatalysis Using CDSE Quantum Dots [PDF]
, 2023 In this project, we synthesized water soluble CdSe quantum dots (QDs) that photocatalyzed the reduction of reazurin to resorufin. Absorption spectra of the CdSe QDs in water solution is the same as in the toluene suspended QDs solution. The retention of optoelectric properties implies tht the QDs retain their chemical properties upon water ...
Garibay, Luis K.
openaire +2 more sources
Preparation of Nanocomposites Based on PMMA and CdSe, CdSe/CdS Quantum Dots
Russian Physics Journal, 2022 Nanocomposites based on PMMA and CdSe, CdSe/CdS quantum dots were developed. Quantum dots (QD) of CdSe, CdSe/CdS with sizes from 2.0 nm to 4.0 nm were obtained by deposition in various media. The photoluminescence range for the obtained QDs was from 480 to 628 nm.
Stepanova, U. A. +6 more
openaire +3 more sources
Spin phenomena in semiconductor quantum dots [PDF]
, 2013 This thesis discusses development of new semiconductor quantum dot (QD) devices and materials. Optical spectroscopy of single QDs is employed in order to investigate electronic structure and magnetic properties of these materials.
Puebla Nunez, Jorge Luis
core +6 more sources
Extracellular biosynthesis of biocompatible CdSe quantum dots. [PDF]
IET Nanobiotechnol, 2019 An extracellular biosynthesis method has been developed to prepare cadmium selenide (CdSe) quantum dots (QDs) with strong fluorescence emission by incubating cheap Cd and Se inorganic salts with Escherichia coli ( E.coli ) bacteria.
Xu J, Hu R, Wang Q, Wang P, Bao H.
europepmc +4 more sources
Spontaneous Spectral Diffusion in CdSe Quantum Dots [PDF]
The Journal of Physical Chemistry Letters, 2012 Spectral diffusion of the emission line of single colloidal nanocrystals is generally regarded as a random process. Here, we show that each new spectral position has a finite memory of previous spectral positions, as evidenced by persistent anticorrelations in time series of spectral jumps.
Fernee, Mark J. +7 more
openaire +5 more sources
Biexciton Blinking in CdSe-Based Quantum Dots
The Journal of Physical Chemistry Letters, 2023 Experiments on single colloidal quantum dots (QDs) have revealed temporal fluctuations in the emission efficiency of the single-exciton state. These fluctuations, often termed "blinking", are caused by opening/closing of charge-carrier traps and/or charging/discharging of the QD.
Sander J. W. Vonk, Freddy T. Rabouw
openaire +3 more sources
FIR Absorption in CdSe Quantum Dot Ensembles [PDF]
physica status solidi (b), 2001 Absorption of far-infrared (FIR) radiation in very small CdSe crystallites (quantum dots, QDs) via excitation of confined dipolar vibrational modes was studied, both theoretically and experimentally. Spatial quantisation of optical phonons was analysed in the framework of a continuum model, which couples the phonon amplitude to the electrostatic ...
Vasilevskiy, Mikhail +5 more
openaire +2 more sources
Synthesis and characterization of water-dispersed CdSe/CdS core-shell quantum dots prepared via layer-by-layer method capped with carboxylic-functionalized poly(vinyl alcohol) [PDF]
Materials Research, 2014 The main goal of this work was to synthesize CdSe/CdS (core-shell) nanoparticles stabilized by polymer ligand using entirely aqueous colloidal chemistry at room temperature.
Fábio Pereira Ramanery +2 more
doaj +1 more source
Highly luminescent colloidal CdS quantum dots with efficient near-infrared electroluminescence in light-emitting diodes [PDF]
, 2016 We acknowledge financial support from FP7 project “Laser Induced Synthesis of Polymeric Nanocomposite Materials and Development of Micro-Patterned Hybrid Light Emitting Diodes (LED) and Transistors (LET)”-LAMP (Project G.A.247928). A.K.B.
Zhang, S. +19 more
core +1 more source