scholarly journals Publisher's Note: Excitons in core-only, core-shell and core-crown CdSe nanoplatelets: Interplay between in-plane electron-hole correlation, spatial confinement, and dielectric confinement [Phys. Rev. B 96 , 035307 (2017)]

2017 ◽  
Vol 96 (11) ◽  
Author(s):  
Fernando Rajadell ◽  
Juan I. Climente ◽  
Josep Planelles
Keyword(s):  
Core Shell ◽  
Electron Hole ◽  
Spatial Confinement

Hole gas accumulation in Si/Ge core–shell and Si/Ge/Si core–double shell nanowires

Nanoscale ◽  
2018 ◽  
Vol 10 (45) ◽  
pp. 21062-21068 ◽  
Author(s):  
Xiaolong Zhang ◽  
Wipakorn Jevasuwan ◽  
Ken C. Pradel ◽  
Thiyagu Subramani ◽  
Toshiaki Takei ◽  
...  
Keyword(s):  
Hole Mobility ◽  
Core Shell ◽  
High Electron ◽  
Electron Hole ◽  
Vapor Liquid Solid ◽  
Selective Doping ◽  
Sharp Interfaces ◽  
Growth Methods ◽  
Vapor Liquid Solid Growth ◽  
Shell Nanowires

p-Si/i-Ge core–shell and p-Si/i-Ge/p-Si core–double shell nanowires are fabricated using CVD with vapor–liquid–solid growth methods. Selective doping and sharp interfaces between the Si core and the Ge shell are achieved, which can provide a feasible design for realizing high electron (hole) mobility transistors.

One-step solvothermal fabrication of Cu@PANI core–shell nanospheres for hydrogen evolution

Nanoscale ◽  
2018 ◽  
Vol 10 (46) ◽  
pp. 22055-22064 ◽  
Author(s):  
Ting Wang ◽  
Dan Wu ◽  
Youliang Wang ◽  
Tingbo Huang ◽  
Gary Histand ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Hydrogen Evolution ◽  
Light Absorption ◽  
Good Stability ◽  
Core Shell ◽  
Electron Hole ◽  
Facile Hydrothermal Method ◽  
Strong Light ◽  
Efficient Separation ◽  
One Step

Cu@PANI core–shell nanospheres synthesized by a facile hydrothermal method exhibit strong light absorption, good stability and efficient separation of photo-generated electron–hole pairs.

scholarly journals Growth rate controlled synthesis of hierarchical Bi2S3/In2S3 core/shell microspheres with enhanced photocatalytic activity

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Juan Zhou ◽  
Guohui Tian ◽  
Yajie Chen ◽  
Yunhan Shi ◽  
Chungui Tian ◽  
...  
Keyword(s):  
Growth Rate ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Charge Transport ◽  
Hydrothermal Process ◽  
Light Response ◽  
Core Shell ◽  
Electron Hole ◽  
One Pot ◽  
Hierarchical Porous

Abstract Core/shell heterostructure composite has great potential applications in photocatalytic field because the introduction of core can remarkably improve charge transport and enhance the electron-hole separation. Herein, hierarchical Bi2S3/In2S3 core/shell structured microspheres were prepared via a simple one-pot hydrothermal process based on different growth rate of the two kinds of sulphides. The results showed that, the as-prepared hierarchical Bi2S3/In2S3 core/shell heterostructure exhibits significant visible light photocatalytic activity for degradation of 2, 4-dichlorophenol. The introduction of Bi2S3 core can not only improve charge transport and enhance the electron-hole separation, but also broaden the visible light response. The hierarchical porous folwer-like shell of In2S3 could increase the specific surface area and remarkably enhanced the chemical stability of Bi2S3 against oxidation.

Interband Optical Transition Energies in Type-II PbSe/PbS Core/Shell Quantum Dots

2017 ◽  
Vol 6 (1) ◽  
pp. 80-86
Author(s):  
S. N. Saravanamoorthy ◽  
A. John Peter
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Shell Thickness ◽  
Optical Transition ◽  
Hole Pair ◽  
Core Shell ◽  
Type Ii ◽  
Electron Hole ◽  
Transition Energies ◽  
Electron Hole Pair

Electronic and optical properties of Type-II lead based core/shell semiconducting quantum dots are reported. Binding energies of electron–hole pair, optical transition energies and the absorption coefficients are investigated taking into account the geometrical confinement in PbSe/PbS core/shell quantum dot nanostructure. The energies are obtained with the increase of shell thickness for various inner core radii. The probability densities of electron and hole wave functions of radial coordinate of the core PbSe and PbS shell quantum dots are presented. The optical transition energy with the spatial confinement is brought out. The electronic properties are obtained using variational approach whereas the compact density matrix method is employed for the nonlinear optical properties. The results show that (i) a decrease in binding energy is obtained when the shell thickness increases due to more separation of electron–hole pair and (ii) the energy band gap decreases with the increase in the shell thickness resulting in the reduction of the higher energy interband transitions.

scholarly journals Long Electron−Hole Separation of ZnO-CdS Core−Shell Quantum Dots

2009 ◽  
Vol 113 (45) ◽  
pp. 19419-19423 ◽  
Author(s):  
Fen Xu ◽  
Vyacheslav Volkov ◽  
Yimei Zhu ◽  
Hanying Bai ◽  
Anthony Rea ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Core Shell ◽  
Electron Hole

Spatial confinement of carriers and tunable band structures in InAs/InP-core–shell nanowires

2010 ◽  
Vol 495 (4-6) ◽  
pp. 261-265 ◽  
Author(s):  
Haibo Shu ◽  
Xiaoshuang Chen ◽  
Xiaohao Zhou ◽  
Wei Lu
Keyword(s):  
Core Shell ◽  
Band Structures ◽  
Spatial Confinement ◽  
Shell Nanowires
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