Excitonic devices

LV Butov - Superlattices and Microstructures, 2017 - Elsevier
Indirect excitons can be controlled by voltage, can travel over large distances before
recombination, and can cool down close to the temperature of semiconductor crystal lattice …

Indirect excitons in van der Waals heterostructures at room temperature

EV Calman, MM Fogler, LV Butov, S Hu… - Nature …, 2018 - nature.com
Indirect excitons (IXs) are explored both for studying quantum Bose gases in semiconductor
materials and for the development of excitonic devices. IXs were extensively studied in III–V …

Internal electric field in wurtzite quantum wells

C Morhain, T Bretagnon, P Lefebvre, X Tang… - Physical Review B …, 2005 - APS
Continuous-wave, time-integrated, and time-resolved photoluminescence experiments are
used to study the excitonic optical recombinations in wurtzite Zn O∕ Zn 0.78 Mg 0.22 O …

Indirect Excitons and Trions in MoSe2/WSe2 van der Waals Heterostructures

EV Calman, LH Fowler-Gerace, DJ Choksy… - Nano …, 2020 - ACS Publications
Indirect excitons (IX) in semiconductor heterostructures are bosons, which can cool below
the temperature of quantum degeneracy and can be effectively controlled by voltage and …

Intrinsic optical nonlinearity in colloidal seeded grown CdSe/CdS nanostructures: photoinduced screening of the internal electric field

G Morello, F Della Sala, L Carbone, L Manna… - Physical Review B …, 2008 - APS
The assessment of the presence and the origin of an intrinsic internal electric field in novel
colloidal CdSe/CdS nanoheterostructures is of fundamental importance in order to …

Quantum-confined Stark effect and mechanisms of its screening in InGaN/GaN light-emitting diodes with a tunnel junction

K Pieniak, M Chlipala, H Turski, W Trzeciakowski… - Optics …, 2021 - opg.optica.org
Nitride-based light-emitting diodes (LEDs) are well known to suffer from a high built-in
electric field in the quantum wells (QWs). In this paper we determined to what extent the …

Exciton localization on basal stacking faults in a-plane epitaxial lateral overgrown GaN grown by hydride vapor phase epitaxy

P Corfdir, P Lefebvre, J Levrat, A Dussaigne… - Journal of Applied …, 2009 - pubs.aip.org
We present a detailed study of the luminescence at 3.42 eV usually observed in a-plane
epitaxial lateral overgrowth (ELO) GaN grown by hydride vapor phase epitaxy on r-plane …

Evidence for “dark charge” from photoluminescence measurements in wide InGaN quantum wells

A Bercha, W Trzeciakowski, G Muziol, JW Tomm… - Optics express, 2023 - opg.optica.org
Wide (15-25 nm) InGaN/GaN quantum wells in LED structures were studied by time-
resolved photoluminescence (PL) spectroscopy and compared with narrow (2.6 nm) wells in …

Carrier recombination dynamics in multiple quantum wells

CN Brosseau, M Perrin, C Silva, R Leonelli - Physical Review B—Condensed …, 2010 - APS
We have measured the carrier recombination dynamics in InGaN/GaN multiple quantum
wells over an unprecedented range in intensity and time by means of time-resolved …

Room-Temperature Transport of Indirect Excitons in Quantum Wells

F Fedichkin, T Guillet, P Valvin, B Jouault, C Brimont… - Physical Review …, 2016 - APS
We report on the exciton propagation in polar (Al, Ga) N/GaN quantum wells over several
micrometers and up to room temperature. The key ingredient to achieve this result is the …