Phonon–phonon interaction assisted electron–hole recombination in WSe2/hBN van der Waals heterostructure

2021 ◽  
Vol 130 (20) ◽  
pp. 205708
Author(s):  
Nan Feng ◽  
Yunzhe Tian ◽  
Jian Han ◽  
Zhenfa Zheng ◽  
Aolei Wang ◽  
...  
Keyword(s):  
Van Der Waals ◽  
Phonon Interaction ◽  
Electron Hole ◽  
Van Der Waals Heterostructure ◽  
Hole Recombination

Tunable band offsets in the BP/P4O10 van der Waals heterostructure: first-principles calculations

2018 ◽  
Vol 20 (47) ◽  
pp. 29931-29938 ◽  
Author(s):  
Wenzhen Dou ◽  
Anping Huang ◽  
Hongliang Shi ◽  
Xinjiang Zhang ◽  
Xiaohu Zheng ◽  
...  
Keyword(s):  
First Principles ◽  
Van Der Waals ◽  
First Principles Calculations ◽  
Electron Hole ◽  
Photoexcited Electron ◽  
Band Offsets ◽  
Van Der Waals Heterostructure ◽  
Vdw Heterostructure

The separation of photoexcited electron–hole pairs in the BP/P4O10 vdW heterostructure.

scholarly journals A type-II blue phosphorus/MoSe2 van der Waals heterostructure: improved electronic and optical properties via vertical electric field

2020 ◽  
Vol 1 (6) ◽  
pp. 1849-1857
Author(s):  
Huabing Shu
Keyword(s):  
Optical Properties ◽  
Electric Field ◽  
Van Der Waals ◽  
Type Ii ◽  
Electron Hole ◽  
Photoexcited Electron ◽  
Effective Separation ◽  
Van Der Waals Heterostructure ◽  
Vertical Electric Field ◽  
Vdw Heterostructure

Electric-field-driving effective separation of photoexcited electron–hole pairs in the P2/MoSe2 vdW heterostructure.

scholarly journals Electron–hole liquid in a van der Waals heterostructure photocell at room temperature

2019 ◽  
Vol 13 (4) ◽  
pp. 245-250 ◽  
Author(s):  
Trevor B. Arp ◽  
Dennis Pleskot ◽  
Vivek Aji ◽  
Nathaniel M. Gabor
Keyword(s):  
Room Temperature ◽  
Van Der Waals ◽  
Electron Hole ◽  
Van Der Waals Heterostructure

Optically Detected Magnetic Resonance and Double Beam Photoluminescence of CdS/HgS/CdS Nanoparticles

1998 ◽  
Vol 536 ◽  
Author(s):  
H. Porteanu ◽  
A. Glozman ◽  
E. Lifshitz ◽  
A. Eychmüller ◽  
H. Weller
Keyword(s):  
Optical Properties ◽  
Magnetic Resonance ◽  
Cds Nanoparticles ◽  
Electron Hole ◽  
Cladding Layer ◽  
Double Beam ◽  
Optically Detected Magnetic Resonance ◽  
Optically Detected ◽  
Cladding Layers ◽  
Hole Recombination

AbstractCdS/HgS/CdS nanoparticles consist of a CdS core, epitaxially covered by one or two monolayers of HgS and additional cladding layers of CdS. The present paper describes our efforts to identify the influence of CdS/HgS/CdS interfaces on the localization of the photogenerated carriers deduced from the magneto-optical properties of the materials. These were investigated by the utilization of optically detected magnetic resonance (ODMR) and double-beam photoluminescence spectroscopy. A photoluminescence (PL) spectrum of the studied material, consists of a dominant exciton located at the HgS layer, and additional non-excitonic band, presumably corresponding to the recombination of trapped carriers at the interface. The latter band can be attenuated using an additional red excitation. The ODMR measurements show the existence of two kinds of electron-hole recombination. These electron-hole pairs maybe trapped either at a twin packing of a CdS/HgS interface, or at an edge dislocation of an epitaxial HgS or a CdS cladding layer.

Pre-Industrial Experience in Solar Photocatalytic Mineralization of Real Wastewaters. Application to Pesticide Container Recycling

1999 ◽  
Vol 40 (4-5) ◽  
pp. 123-130 ◽  
Author(s):  
S. Malato ◽  
J. Blanco ◽  
C. Richter ◽  
B. Milow ◽  
M. I. Maldonado
Keyword(s):  
Organic Contaminants ◽  
Toxic Waste ◽  
Experimental Plant ◽  
Electron Hole ◽  
Particulate Suspensions ◽  
Photocatalytic System ◽  
Commercial Pesticide ◽  
Pesticide Container ◽  
By Products ◽  
Hole Recombination

Particulate suspensions of TiO2 irradiated with natural solar tight in a large experimental plant catalyse the oxidation of organic contaminants. The problem in using TiO2 as a photocatalyst is electron/hole recombination. One strategy for inhibiting e−/h+ recombination is to add other (irreversible) electron acceptors to the reaction. In many highly toxic waste waters where degradation of organic pollutants is the major concern, the addition of an inorganic anion to enhance the organic degradation rate may be justified. For better results, these additives should fulfil the following criteria: dissociate into harmless by-products and lead to the formation of ·OH or other oxidising agents. In this paper, we attempt to demonstrate the optimum conditions for the treatment of commercial pesticide rinsates found in the wastewater produced by a pesticide container recycling plant. The experiments were performed in one of the pilot plants of the largest solar photocatalytic system in Europe, the Detoxification Plants of the Plataforma Solar de Almería (PSA), in Spain. After testing ten different commercial pesticides, results show that peroxydisulphate enhances the photocatalytic miniralization of all of them. This study is part of an extensive project focused on the design of a solar photocatalytic plant for decontamination of agricultural rinsates in Almería (Spain).

Misfit layer SnTiS3: An assemble-free van der Waals heterostructure SnS/TiS2 for lithium ion battery anode

2021 ◽  
Vol 494 ◽  
pp. 229712
Author(s):  
Yue-E Huang ◽  
Weilin Lin ◽  
Chenguang Shi ◽  
Li Li ◽  
Kaiqing Fan ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Van Der Waals ◽  
Lithium Ion ◽  
Van Der Waals Heterostructure ◽  
Battery Anode

A first-principles study on the electronic and optical properties of a type-II C2N/g-ZnO van der Waals heterostructure

2021 ◽  
Vol 23 (6) ◽  
pp. 3963-3973
Author(s):  
Jianxun Song ◽  
Hua Zheng ◽  
Minxia Liu ◽  
Geng Zhang ◽  
Dongxiong Ling ◽  
...  
Keyword(s):  
Optical Properties ◽  
Dft Calculations ◽  
First Principles ◽  
Van Der Waals ◽  
Band Alignment ◽  
Type Ii ◽  
Electronic And Optical Properties ◽  
Direct Bandgap ◽  
Van Der Waals Heterostructure ◽  
Vdw Heterostructure

The structural, electronic and optical properties of a new vdW heterostructure, C2N/g-ZnO, with an intrinsic type-II band alignment and a direct bandgap of 0.89 eV at the Γ point are extensively studied by DFT calculations.

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