scholarly journals Colloidal synthesis and optical properties of type-II CdSe–CdTe and inverted CdTe–CdSe core–wing heteronanoplatelets

Nanoscale ◽  
2015 ◽  
Vol 7 (17) ◽  
pp. 8084-8092 ◽  
Author(s):  
A. V. Antanovich ◽  
A. V. Prudnikau ◽  
D. Melnikau ◽  
Y. P. Rakovich ◽  
A. Chuvilin ◽  
...  
Keyword(s):  
Optical Properties ◽  
Electronic Properties ◽  
Colloidal Synthesis ◽  
Type Ii ◽  
Cdse Core ◽  
Structural And Electronic Properties

We developed colloidal synthesis to investigate the structural and electronic properties of CdSe–CdTe and inverted CdTe–CdSe heteronanoplatelets.

Anisotropy of Structure and Optical Properties of Self-Assembled and Oriented Colloidal CdSe Nanoplatelets

2018 ◽  
Vol 232 (9-11) ◽  
pp. 1619-1630 ◽  
Author(s):  
Artsiom Antanovich ◽  
Anatol Prudnikau ◽  
Mikhail Artemyev
Keyword(s):  
Optical Properties ◽  
Electronic Properties ◽  
Spatial Orientation ◽  
Colloidal Synthesis ◽  
Structural And Optical Properties ◽  
One Dimensional ◽  
Optical And Electronic Properties ◽  
Cadmium Chalcogenide ◽  
Great Progress ◽  
Atomically Flat

Abstract Atomically flat colloidal nanoplatelets with strong one-dimensional confinement represent the most recently discovered type of quantum-confined cadmium chalcogenide nanocrystals. In almost a decade a great progress has been achieved in the colloidal synthesis of nanoplatelets and understanding of their basic optical and electronic properties. However, up until recently methods of their controlled spatial orientation were quite scarce, what in turn hindered obtaining reliable information on their anisotropic structural and optical properties arising from their shape. In this paper we provide a mini-review of recent advances in this field of study.

Preparation of cubane-1,4-dicarboxylate–Zn–Al layered double hydroxide nanohybrid: comparison of structural and optical properties between experimental and calculated results

RSC Advances ◽  
2015 ◽  
Vol 5 (83) ◽  
pp. 67384-67393 ◽  
Author(s):  
Farzad Arjomandi Rad ◽  
Zolfaghar Rezvani
Keyword(s):  
Density Functional Theory ◽  
Optical Properties ◽  
Electronic Properties ◽  
Layered Double Hydroxide ◽  
Density Functional ◽  
Structural And Optical Properties ◽  
Functional Theory ◽  
Structural And Electronic Properties ◽  
Double Hydroxide

In this work, we report the preparation of cubane-1,4-dicarboxylate–Zn2Al layered double hydroxide (LDH) nanohybrid and understanding of the structural and electronic properties of nanohybrid by periodic density functional theory.

scholarly journals Structural and Electronic Properties of Small Perovskite Nanoparticles of the Form ABX3 (A = MA, DEA, FA, GA, B = Pb, Sn, X = Cl, Br, I)

2021 ◽  
Vol 2 (3) ◽  
pp. 382-393
Author(s):  
Christos S. Garoufalis ◽  
Iosif Galanakis ◽  
Zaiping Zeng ◽  
David B. Hayrapetyan ◽  
Sotirios Baskoutas
Keyword(s):  
Optical Properties ◽  
Electronic Properties ◽  
First Principles ◽  
Semiempirical Calculation ◽  
Orientational Disorder ◽  
Electronic And Optical Properties ◽  
Wide Range ◽  
Structural And Electronic Properties ◽  
Backbone Structure ◽  
Perovskite Nanoparticles

Using a combination of first principles and semiempirical calculation, we explore the structural, electronic, and optical properties of a wide range of perovskite (ABX3) nanoparticle of different size and composition. The variations of the BX3 backbone structure considered include all possible combinations of the cations B=Pb,Sn and the anions X=Cl,Br,I, while the interstitial cation A is either methylamonium (MA), or formamidinium (FA), or guanidine amine (GA), or dimethylamine (DEA). Our results indicate that the orientational disorder of the A moieties may affect the structural and electronic properties of the NPs while the optical properties exhibit a clear dependence on the NPs’ size and the types of B cations and X anions, but they are quite insensitive to the type of A cation.

Study of structural and electronic properties of (ZnSeZB)m/(ZnSeWZ)n superlattices based on HSE hybrid functional

2019 ◽  
Vol 33 (23) ◽  
pp. 1950269
Author(s):  
Jia-Hong Lin ◽  
Xiong-Tao Yang ◽  
Bing-Suo Zou ◽  
Li-Jie Shi
Keyword(s):  
Solar Energy ◽  
Electronic Properties ◽  
First Principles ◽  
Band Alignment ◽  
Good Prediction ◽  
Type Ii ◽  
Carrier Localization ◽  
Hybrid Functional ◽  
Zinc Blende ◽  
Structural And Electronic Properties

Using first-principles method, we studied systematically the structural and electronic properties of ZB/WZ superlattices of ZnSe. The band offsets are calculated by Heyd–Scuseria–Ernzerhof (HSE) hybrid functional which can give a good prediction on the relative band positions. The band alignment at ZB/WZ interface is found to be type-II with holes localized in wurtzite region and electrons in zinc-blende region, which is suitable for optoelectronic and solar energy conversion. The origin of type-II character and the carrier localization are investigated in detail.

scholarly journals Tunable Electronic Properties of Type-II SiS2/WSe2 Hetero-Bilayers

Nanomaterials ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 2037
Author(s):  
Yue Guan ◽  
Xiaodan Li ◽  
Ruixia Niu ◽  
Ningxia Zhang ◽  
Taotao Hu ◽  
...  
Keyword(s):  
Band Gap ◽  
Electronic Properties ◽  
Density Functional ◽  
Photogenerated Electron ◽  
Strain Range ◽  
Band Alignment ◽  
Type Ii ◽  
Electron Hole ◽  
Structural And Electronic Properties ◽  
Indirect Band Gap

First-principle calculations based on the density functional theory (DFT) are implemented to study the structural and electronic properties of the SiS2/WSe2 hetero-bilayers. It is found that the AB-2 stacking model is most stable among all the six SiS2/WSe2 heterostructures considered in this work. The AB-2 stacking SiS2/WSe2 hetero-bilayer possesses a type-II band alignment with a narrow indirect band gap (0.154 eV and 0.738 eV obtained by GGA-PBE and HSE06, respectively), which can effectively separate the photogenerated electron–hole pairs and prevent the recombination of the electron–hole pairs. Our results revealed that the band gap can be tuned effectively within the range of elastic deformation (biaxial strain range from −7% to 7%) while maintaining the type-II band alignment. Furthermore, due to the effective regulation of interlayer charge transfer, the band gap along with the band offset of the SiS2/WSe2 heterostructure can also be modulated effectively by applying a vertical external electric field. Our results offer interesting alternatives for the engineering of two-dimensional material-based optoelectronic nanodevices.

Evolution of self-assembled type-II ZnTe/ZnSe nanostructures: Structural and electronic properties

2012 ◽  
Vol 111 (9) ◽  
pp. 093524 ◽  
Author(s):  
S. J. Kim ◽  
B.-C. Juang ◽  
W. Wang ◽  
J. R. Jokisaari ◽  
C.-Y. Chen ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Type Ii ◽  
Structural And Electronic Properties ◽  
Self Assembled

Fe2O3/Cu2O heterostructured nanocrystals

2014 ◽  
Vol 2 (22) ◽  
pp. 8525-8533 ◽  
Author(s):  
Peter Mirtchev ◽  
Kristine Liao ◽  
Elizabeth Jaluague ◽  
Qiao Qiao ◽  
Yao Tian ◽  
...  
Keyword(s):  
Solar Energy ◽  
Energy Conversion ◽  
Electronic Properties ◽  
Photoelectron Spectroscopy ◽  
Band Alignment ◽  
Solution Phase ◽  
Type Ii ◽  
Seeded Growth ◽  
Structural And Electronic Properties ◽  
Growth Approach

We report the synthesis of colloidal γ-Fe2O3/Cu2O hetero-nanocrystals (HNCs) using a solution-phase seeded-growth approach. The structural and electronic properties of these materials are investigated by HRTEM and photoelectron spectroscopy. A type II band alignment was found between the p-Cu2O and n-Fe2O3 domains making the particles potentially attractive candidates for applications in solar energy conversion.

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