Results 11 to 20 of about 2,454,452 (341)

Colloidal quantum dot lasers

open access: yesNature Reviews Materials, 2021
Young‐Shin Park   +4 more
semanticscholar   +3 more sources

Structural phase transitions and photoluminescence mechanism in a layer of 3D hybrid perovskite nanocrystals

open access: yesAIP Advances, 2020
Although structural phase transitions in single-crystal hybrid methyl-ammonium (MA) lead halide perovskites (MAPbX3, X = Cl, Br, I) as a function of temperature are common phenomena, they have never been observed in the corresponding nanocrystals.
Yuri D. Glinka   +5 more
doaj   +1 more source

Organic Solar Cell With Efficiency Over 20% and VOC Exceeding 2.1 V Enabled by Tandem With All‐Inorganic Perovskite and Thermal Annealing‐Free Process

open access: yesAdvanced Science, 2022
Organic solar cells (OSCs) based on polymer donor and non‐fullerene acceptor achieve power conversion efficiency (PCE) more than 19% but their poor absorption below 550 nm restricts the harvesting of high‐energy photons.
Xiaoyu Gu   +11 more
doaj   +1 more source

Quantum computation with quantum dots [PDF]

open access: yesPhysical Review A, 1998
We propose a new implementation of a universal set of one- and two-qubit gates for quantum computation using the spin states of coupled single-electron quantum dots. Desired operations are effected by the gating of the tunneling barrier between neighboring dots.
Loss, D., DiVincenzo, D. P.
openaire   +3 more sources

Quantum Dot Sensitized Photoelectrodes [PDF]

open access: yesNanomaterials, 2011
Quantum Dots (QDs) are promising alternatives to organic dyes as sensitisers for photocatalytic electrodes. This review article provides an overview of the current state of the art in this area. More specifically, different types of QDs with a special focus on heavy-metal free QDs and the methods for preparation and adsorption onto metal oxide ...
Thomas Nann, Thomas J. Macdonald
openaire   +4 more sources

Highly Polarized Fluorescent Film Based on Aligned Quantum Rods by Contact Ink-Jet Printing Method

open access: yesIEEE Photonics Journal, 2019
Fluorescent quantum rods (QRs) have received much attention recently because of their properties of polarized light emission with narrow full width at half-maximum.
Ziming Zhou   +12 more
doaj   +1 more source

High performance top-emitting quantum dot light-emitting diodes with interfacial modification

open access: yesAIP Advances, 2020
In this paper, we report high performance top-emitting quantum dot light-emitting diodes (TE-QLEDs) with an interfacial modification layer. The specular metal bottom electrode was modified by an interfacial layer to improve the wettability of the aqueous
Shihao Ding   +8 more
doaj   +1 more source

Linewidth broadening of a quantum dot coupled to an off-resonant cavity [PDF]

open access: yes, 2010
We study the coupling between a photonic crystal cavity and an off-resonant quantum dot under resonant excitation of the cavity or the quantum dot. Linewidths of the quantum dot and the cavity as a function of the excitation laser power are measured.
Englund, Dirk   +6 more
core   +2 more sources

Quantum Dots in Graphene [PDF]

open access: yesPhysical Review Letters, 2007
4 pages, 3 ...
Silvestrov, P. G., Efetov, K. B.
openaire   +3 more sources

Non-invasive detection of charge-rearrangement in a quantum dot in high magnetic fields [PDF]

open access: yes, 2005
We demonstrate electron redistribution caused by magnetic field on a single quantum dot measured by means of a quantum point contact as non-invasive detector.
B. Harke   +7 more
core   +3 more sources

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