Engineering Exciton Recombination Pathways in Bilayer WSe2 for Bright Luminescence

ACS Nano ◽  
2022 ◽  
Author(s):  
Shiekh Zia Uddin ◽  
Naoki Higashitarumizu ◽  
Hyungjin Kim ◽  
Eran Rabani ◽  
Ali Javey
Keyword(s):  
Exciton Recombination ◽  
Bright Luminescence

Kinetics of self-trapped exciton recombination in CsI

1971 ◽  
Vol 48 (1) ◽  
pp. 311-318 ◽  
Author(s):  
H. Lamatsch ◽  
J. Rossel ◽  
E. Saurer
Keyword(s):  
Exciton Recombination ◽  
Kinetics Of

Bright Luminescence of Sb Doping in All-Inorganic Zinc Halide Perovskite Variant

2021 ◽  
pp. 162610
Author(s):  
Xiaoyu Wang ◽  
Qibin Shen ◽  
Yansong Chen ◽  
Nasir Ali ◽  
Ziyang Ren ◽  
...  
Keyword(s):  
Sb Doping ◽  
Halide Perovskite ◽  
Bright Luminescence

Triplet exciton recombination in a-Si:H

1987 ◽  
Vol 90 (1-3) ◽  
pp. 139-146 ◽  
Author(s):  
Kazuo Morigaki ◽  
Mihoko Yoshida
Keyword(s):  
Triplet Exciton ◽  
Exciton Recombination

scholarly journals Spontaneous transitions to enhanced fluorescence for GeV centers in a single microcrystalline diamond

2018 ◽  
Vol 190 ◽  
pp. 04012
Author(s):  
Natalia A. Lozing ◽  
Maxim G. Gladush ◽  
Ivan Yu. Eremchev ◽  
Eugeniy A. Ekimov ◽  
Andrey V. Naumov
Keyword(s):  
Continuous Wave ◽  
Incident Light ◽  
Theoretical Explanation ◽  
Dielectric Medium ◽  
Continuous Wave Laser ◽  
Enhanced Fluorescence ◽  
Colour Centres ◽  
Transient Regimes ◽  
Generalized System ◽  
Bright Luminescence

We propose a theoretical explanation of spontaneous transitions between dim and bright fluorescence intensity states observed experimentally in a microcrystal of diamond with germanium-vacancy colour centres driven by a continuous wave laser. We use a generalized system of optical Maxwell-Bloch equations derived for an emitter in an ensemble of motionless similar particles embedded in a dielectric medium, which is transparent for the incident light. A numerical analysis of transient regimes and several models of slow damping of the bright luminescence mode are reported.

Enhancing the Power Conversion Efficiency of Inverted Organic Photovoltaics with Gold Functionalized Reduced Graphene Oxide

2015 ◽  
Vol 1737 ◽  
Author(s):  
Rebecca Isseroff ◽  
Zhenhua Yang ◽  
Jessica Kim ◽  
Andrew Chen ◽  
Miriam Rafailovich
Keyword(s):  
Graphene Oxide ◽  
Fermi Level ◽  
Reduced Graphene Oxide ◽  
Active Layer ◽  
Energy Gap ◽  
Power Conversion ◽  
Design Phase ◽  
Reduced Graphene ◽  
Exciton Recombination ◽  
First Time

ABSTRACTIn this study, an “inverted” design, phase-separated morphology and gold-functionalized reduced graphene oxide (Au-rGO) were used to address exciton recombination and poor Fermi level alignment. To increase efficiencies, a unique methodology was used to coat Au-rGO on top of the active layer. When 0.05 Au-rGO was blended with the active layer, there were metal-thiolate bonds with P3HT and π-π stacking with PCBM. However, KPFM, measured for the first time for this material, showed that the while 0.05mM Au-rGO reduced the energy gap between P3HT and PBCM, this was offset by recombination. KPFM showed that Au-rGO may be better suited between the active layer and electrode. When 0.5mM Au-rGO was coated on top of the active layer, efficiency increased (p<0.002) nearly 600%, suggesting that Au-rGO is a more effective acceptor than a constituent of the active layer.

scholarly journals Band‐Edge Exciton Fine Structure and Exciton Recombination Dynamics in Single Crystals of Layered Hybrid Perovskites

2019 ◽  
Vol 30 (6) ◽  
pp. 1907979 ◽  
Author(s):  
Hong‐Hua Fang ◽  
Jie Yang ◽  
Sampson Adjokatse ◽  
Eelco Tekelenburg ◽  
Machteld E. Kamminga ◽  
...  
Keyword(s):  
Fine Structure ◽  
Single Crystals ◽  
Band Edge ◽  
Exciton Recombination ◽  
Recombination Dynamics

scholarly journals Enabling remote quantum emission in 2D semiconductors via porous metallic networks

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Jose J. Fonseca ◽  
Andrew L. Yeats ◽  
Brandon Blue ◽  
Maxim K. Zalalutdinov ◽  
Todd Brintlinger ◽  
...  
Keyword(s):  
Low Temperatures ◽  
Laser Excitation ◽  
Single Photon ◽  
Photon Emission ◽  
Metal Films ◽  
Single Photon Emitters ◽  
2D Semiconductors ◽  
Exciton Recombination ◽  
Plasmon Polaritons ◽  
Dimensional Crystal

AbstractHere we report how two-dimensional crystal (2DC) overlayers influence the recrystallization of relatively thick metal films and the subsequent synergetic benefits this provides for coupling surface plasmon-polaritons (SPPs) to photon emission in 2D semiconductors. We show that annealing 2DC/Au films on SiO2 results in a reverse epitaxial process where initially nanocrystalline Au films gain texture, crystallographically orient with the 2D crystal overlayer, and form an oriented porous metallic network (OPEN) structure in which the 2DC can suspend above or coat the inside of the metal pores. Both laser excitation and exciton recombination in the 2DC semiconductor launch propagating SPPs in the OPEN film. Energy in-/out- coupling occurs at metal pore sites, alleviating the need for dielectric spacers between the metal and 2DC layer. At low temperatures, single-photon emitters (SPEs) are present across an OPEN-WSe2 film, and we demonstrate remote SPP-mediated excitation of SPEs at a distance of 17 μm.

Sign in / Sign up

Export Citation Format

Share Document