Exciton-plasmon polariton coupling and hot carrier generation in two-dimensional SiB semiconductors: a first-principles study

AbstractExciton (strong electron–hole interactions) and hot carriers (HCs) assisted by surface plasmon polaritons show promise to enhance the photoresponse of nanoelectronic and optoelectronic devices. In the current research, we develop a computational quantum framework to study the effect of coupled exciton and HCs on the photovoltaic energy distribution, scattering process, polarizability, and light emission of two-dimensional (2D) semiconductors. Using a stable 2D semiconductor (semihydrogenated SiB) as our example, we theoretically show that external strain and thermal effect on the SiB can lead to valley polarized plasmon quasiparticles and HC generation. Our results reveal that the electron–phonon and electron–electron (e–e) interactions characterize the correlation between the decay rate, scattering of excitons, and generation of HCs in 2D semiconductors. Moreover, phonon assisted luminescence spectra of SiB suggest that light emission can be enhanced by increasing strain and temperature. The polarized plasmon with strong coupling of electronic and photonics states in SiB makes it as a promising candidate for light harvesting, plasmonic photocurrent devices, and quantum information.

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Plasmonically-powered hot carrier induced modulation of light emission in a two-dimensional GaAs semiconductor quantum well

Nanoscale ◽

10.1039/c8nr07489e ◽

2019 ◽

Vol 11 (9) ◽

pp. 3827-3836 ◽

Cited By ~ 3

Author(s):

Eric Ashalley ◽

Karol Gryczynski ◽

Zhiming Wang ◽

Gregory Salamo ◽

Arup Neogi

Keyword(s):

Quantum Well ◽

Electrostatic Interaction ◽

Frequency Modulation ◽

Light Emission ◽

Two Dimensional ◽

Hot Carrier ◽

Semiconductor Quantum Well

Plasmonic and electrostatic interaction among the Au and Ga nanoparticles results in frequency modulation and longer lifetime of emitted light.

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Electron-hole liquid and two-dimensional electron gas in layered group A3B6 semiconductors

Uspekhi Fizicheskih Nauk ◽

10.3367/ufnr.0156.198810f.0365 ◽

1988 ◽

Vol 156 (10) ◽

pp. 365 ◽

Cited By ~ 1

Author(s):

G.L. Belen'kii

Keyword(s):

Electron Gas ◽

Two Dimensional ◽

Dimensional Electron ◽

Two Dimensional Electron Gas ◽

Electron Hole ◽

Group A ◽

Dimensional Electron Gas

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Ti3C2-MXene/Bismuth Ferrite Nanohybrids for Efficient Degradation of Organic Dye and Colorless Pollutant

10.26434/chemrxiv.8192375.v1 ◽

2019 ◽

Author(s):

Ayesha Tariq ◽

M. Abdullah Iqbal ◽

S. Irfan Ali ◽

Muhammad Z. Iqbal ◽

Deji Akinwande ◽

...

Keyword(s):

Surface Area ◽

Low Cost ◽

Bismuth Ferrite ◽

Organic Dye ◽

Two Dimensional ◽

Electron Hole ◽

Photocatalytic Application ◽

Electron Hole Pair ◽

Pair Generation ◽

Photocatalytic Applications

Nanohybrids, made up of Bismuth ferrites/Carbon allotropes, are extensively used in photocatalytic applications nowadays. Our work proposes a nanohybrid system composed of Bismuth ferrite nanoparticles with two-dimensional (2D) MXene sheets namely, the BiFeO3 (BFO)/Ti3C2 (MXene) nanohybrid for enhanced photocatalytic activity. We have fabricated the BFO/MXene nanohybrid using simple and low cost double solvent solvothermal method. The SEM and TEM images show that the BFO nanoparticles were attached onto the MXene surface and in the inter-layers of two-dimensional (2D) MXene sheets. The photocatalytic application is tested for the visible light irradiation which showed the highest efficiency among all pure-BFO based photocatalysts, i.e. 100% degradation in 42 min for organic dye (Congo Red) and colorless aqueous pollutant (acetophenone) in 150 min, respectively. The present BFO-based hybrid system exhibited the large surface area of 147 m2g-1measured via Brunauer-Emmett-Teller (BET) sorption-desorption technique, and is found to be largest among BFO and its derivatives. Also, the photoluminescence (PL) spectra indicate large electron-hole pair generation. Fast and efficient degradation of organic molecules is supported by both factors; larger surface area and lower electron-hole recombination rate. The BFO/MXene nanohybrid presented here is a highly efficient photocatalyst compared to other nanostructures based on pure BiFeO3 which makes it a promising candidate for many future applications.

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A First-Principle Study of Monolayer Transition Metal Carbon Trichalcogenides

Journal of Superconductivity and Novel Magnetism ◽

10.1007/s10948-021-05980-1 ◽

2021 ◽

Author(s):

Muhammad Yar Khan ◽

Yan Liu ◽

Tao Wang ◽

Hu Long ◽

Miaogen Chen ◽

...

Keyword(s):

Phonon Dispersion ◽

Magnetic Ordering ◽

Dimensional Structure ◽

First Principle ◽

Two Dimensional ◽

Biaxial Strain ◽

Half Metallic ◽

First Principle Calculations ◽

Potential Applications ◽

External Strain

AbstractMonolayer MnCX3 metal–carbon trichalcogenides have been investigated by using the first-principle calculations. The compounds show half-metallic ferromagnetic characters. Our results reveal that their electronic and magnetic properties can be altered by applying uniaxial or biaxial strain. By tuning the strength of the external strain, the electronic bandgap and magnetic ordering of the compounds change and result in a phase transition from the half-metallic to the semiconducting phase. Furthermore, the vibrational and thermodynamic stability of the two-dimensional structure has been verified by calculating the phonon dispersion and molecular dynamics. Our study paves guidance for the potential applications of these two mono-layers in the future for spintronics and straintronics devices.

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Ultrahigh resolution two-dimensional atomic localization via tunable surface plasmon polaritons

Optics & Laser Technology ◽

10.1016/j.optlastec.2021.107021 ◽

2021 ◽

Vol 140 ◽

pp. 107021

Author(s):

Muhammad Idrees ◽

Muhib Ullah ◽

Bakth Amin Bacha ◽

Arif Ullah ◽

Li-Gang Wang

Keyword(s):

Surface Plasmon ◽

Surface Plasmon Polaritons ◽

Two Dimensional ◽

Ultrahigh Resolution ◽

Plasmon Polaritons

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Manipulation of hot carrier cooling dynamics in two-dimensional Dion–Jacobson hybrid perovskites via Rashba band splitting

Nature Communications ◽

10.1038/s41467-021-24258-7 ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Jun Yin ◽

Rounak Naphade ◽

Partha Maity ◽

Luis Gutiérrez-Arzaluz ◽

Dhaifallah Almalawi ◽

...

Keyword(s):

Transient Absorption ◽

Phonon Scattering ◽

Transient Absorption Spectroscopy ◽

Band Model ◽

Two Dimensional ◽

Spintronic Devices ◽

Hot Carrier ◽

Band Splitting ◽

Perovskite Materials ◽

Spin Polarized

AbstractHot-carrier cooling processes of perovskite materials are typically described by a single parabolic band model that includes the effects of carrier-phonon scattering, hot phonon bottleneck, and Auger heating. However, little is known (if anything) about the cooling processes in which the spin-degenerate parabolic band splits into two spin-polarized bands, i.e., the Rashba band splitting effect. Here, we investigated the hot-carrier cooling processes for two slightly different compositions of two-dimensional Dion–Jacobson hybrid perovskites, namely, (3AMP)PbI4 and (4AMP)PbI4 (3AMP = 3-(aminomethyl)piperidinium; 4AMP = 4-(aminomethyl)piperidinium), using a combination of ultrafast transient absorption spectroscopy and first-principles calculations. In (4AMP)PbI4, upon Rashba band splitting, the spin-dependent scattering of hot electrons is responsible for accelerating hot-carrier cooling at longer delays. Importantly, the hot-carrier cooling of (4AMP)PbI4 can be extended by manipulating the spin state of the hot carriers. Our findings suggest a new approach for prolonging hot-carrier cooling in hybrid perovskites, which is conducive to further improving the performance of hot-carrier-based optoelectronic and spintronic devices.

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Determining Quasiparticle Bandgap of Two-Dimensional Transition Metal Dichalcogenides by Observation of Hot Carrier Relaxation Dynamics

The Journal of Physical Chemistry Letters ◽

10.1021/acs.jpclett.0c03414 ◽

2020 ◽

pp. 585-591

Author(s):

Zhen Chi ◽

Xiang Zhang ◽

Xiewen Wen ◽

Junfeng Han ◽

Zheng Wei ◽

...

Keyword(s):

Transition Metal ◽

Transition Metal Dichalcogenides ◽

Two Dimensional ◽

Relaxation Dynamics ◽

Carrier Relaxation ◽

Hot Carrier ◽

Metal Dichalcogenides ◽

Carrier Relaxation Dynamics

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Flexo-photoelectronic effect in n-type/p-type two-dimensional semiconductors and a deriving light-stimulated artificial synapse

Materials Horizons ◽

10.1039/d1mh00024a ◽

2021 ◽

Author(s):

Xiang Wang ◽

Xin Zhou ◽

Anyang Cui ◽

Menghan Deng ◽

Xionghu Xu ◽

...

Keyword(s):

Two Dimensional ◽

2D Semiconductors ◽

Artificial Synapse ◽

P Type

We demonstrate flexo-photoelectronic effects of both n-type and p-type 2D semiconductors.

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Mesoscopic characterization of the optical property of antiphase boundaries in CuPt-ordered GaInP2

MRS Proceedings ◽

10.1557/proc-588-105 ◽

1999 ◽

Vol 588 ◽

Author(s):

Y. Ohno ◽

S. Takeda

Keyword(s):

Optical Property ◽

Light Emission ◽

Polarized Light ◽

Structural Data ◽

Luminescence Spectra ◽

Antiphase Boundaries ◽

Transmission Electron ◽

Tem Method ◽

Low Dimensional ◽

First Time

AbstractWe have developed an apparatus for polarized cathodoluminescence (CL) spectroscopy combined with transmission electron microscopy (TEM), that enables us to obtain simultaneously structural data in higher spatial resolution by TEM and polarized luminescence spectra by CL of the same microscopic area. The polarized-CL/TEM method is very useful to study the optical properties of low-dimensional microstructures in semiconducting materials. We have applied the method to examine the optical property of antiphase boundaries in CuPt-ordered GaInP2 and found, for the first time, the polarized light emission from the APBs whose habit planes are parallel to the (T11) and (1T0) atomic planes.

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