Energy Transfer between Cyano-Ether PPV and InGaN/GaN Quantum Wells with Large Piezoelectric Fields

2018 ◽  
Vol 215 (21) ◽  
pp. 1800322
Author(s):  
Niklas Mutz ◽  
Holm Kirmse ◽  
Christoph T. Koch ◽  
Emil J. W. List-Kratochvil ◽  
Sylke Blumstengel
Keyword(s):  
Energy Transfer ◽  
Quantum Wells ◽  
Piezoelectric Fields

scholarly journals Photo- and cathodoluminescence investigations of piezoelectric GaN/AlGaN quantum wells

2000 ◽  
Vol 639 ◽  
Author(s):  
E.M. Goldys ◽  
M. Godlewski ◽  
M.R. Phillips ◽  
A.A. Toropov
Keyword(s):  
Quantum Well ◽  
Quantum Wells ◽  
Electric Fields ◽  
Free Exciton ◽  
Multiple Quantum Well ◽  
Depth Profiling ◽  
Multiple Quantum ◽  
Recombination Mechanism ◽  
Decay Times ◽  
Piezoelectric Fields

ABSTRACTWe have examined multiple quantum well AlGaN/GaN structures with several quantum wells of varying widths. The structures had strain-free quantum wells and strained barriers. Strong piezoelectric fields in these structures led to a large red shift of the PL emission energies and long decay times were also observed. While the peak energies could be modelled using the effective mass approximation, the calculated free exciton radiative lifetimes were much shorter than those observed in experiments, indicating an alternative recombination mechanism, tentatively attributed to localised excitons. Cathodoluminescence depth profiling revealed an unusually small penetration range of electrons suggesting that electron-hole pairs preferentially remain within the multiple quantum well region due to the existing electric fields. Spatial fluctuations of the cathodoluminescence intensity were also observed.

scholarly journals Near-Unity Efficiency Energy Transfer from Colloidal Semiconductor Quantum Wells of CdSe/CdS Nanoplatelets to a Monolayer of MoS2

ACS Nano ◽  
2018 ◽  
Vol 12 (8) ◽  
pp. 8547-8554 ◽  
Author(s):  
Nima Taghipour ◽  
Pedro Ludwig Hernandez Martinez ◽  
Ayberk Ozden ◽  
Murat Olutas ◽  
Didem Dede ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Quantum Wells ◽  
Semiconductor Quantum Wells ◽  
Colloidal Semiconductor

scholarly journals Long-distance coupling and energy transfer between exciton states in magnetically controlled microcavities

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Maciej Ściesiek ◽  
Krzysztof Sawicki ◽  
Wojciech Pacuski ◽  
Kamil Sobczak ◽  
Tomasz Kazimierczuk ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Quantum Wells ◽  
Long Distance ◽  
Electron Hole ◽  
Quantum Networks ◽  
Spatial Direction ◽  
Optical Microcavities ◽  
Excitonic States ◽  
The Magnetic Field ◽  
Quantum Emitters

Abstract Coupling of quantum emitters in a semiconductor relies, generally, on short-range dipole-dipole or electronic exchange type interactions. Consistently, energy transfer between exciton states, that is, electron-hole pairs bound by Coulomb interaction, is limited to distances of the order of 10 nm. Here, we demonstrate polariton-mediated coupling and energy transfer between excitonic states over a distance exceeding 2 μm. We accomplish this by coupling quantum well-confined excitons through the delocalized mode of two coupled optical microcavities. Use of magnetically doped quantum wells enables us to tune the confined exciton energy by the magnetic field and in this way to control the spatial direction of the transfer. Such controlled, long-distance interaction between coherently coupled quantum emitters opens possibilities of a scalable implementation of quantum networks and quantum simulators based on solid-state, multi-cavity systems.

Exciton Spectra and Energy Transfer in CdTe/ZnTe Double Quantum Wells Grown by Atomic-Layer Epitaxy

2019 ◽  
Vol 53 (16) ◽  
pp. 2060-2063 ◽  
Author(s):  
V. Agekyan ◽  
M. Chukeev ◽  
G. Karczewski ◽  
A. Serov ◽  
N. Filosofov ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Quantum Wells ◽  
Atomic Layer ◽  
Atomic Layer Epitaxy ◽  
Double Quantum

scholarly journals Energy transfer from InGaN quantum wells to Au nanoclusters via optical waveguiding

2011 ◽  
Vol 19 (S2) ◽  
pp. A194 ◽  
Author(s):  
G. W. Shu ◽  
C. C. Lin ◽  
H. T. Lin ◽  
T. N. Lin ◽  
J. L. Shen ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Quantum Wells ◽  
Au Nanoclusters ◽  
Optical Waveguiding ◽  
Ingan Quantum Wells
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