Ferromagnetism in 2D organic iron hemoglobin crystals based on nitrogenated conjugated micropore materials

2019 ◽  
Vol 21 (46) ◽  
pp. 25820-25825
Author(s):  
Artem Pimachev ◽  
Robert D. Nielsen ◽  
Anri Karanovich ◽  
Yuri Dahnovsky
Keyword(s):  
Solar Cells ◽  
Hydrogen Storage ◽  
Low Cost ◽  
Ferromagnetic Semiconductor ◽  
Two Dimensional

We study an environmentally stable, low-cost two-dimensional ferromagnetic semiconductor with applications in biomedicine, solar cells, spintronics, and hydrogen storage.

MoS2: a two-dimensional hole-transporting material for high-efficiency, low-cost perovskite solar cells

2018 ◽  
Vol 29 (20) ◽  
pp. 205201 ◽  
Author(s):  
Saman Kohnehpoushi ◽  
Pariya Nazari ◽  
Bahram Abdollahi Nejand ◽  
Mehdi Eskandari
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Low Cost ◽  
Perovskite Solar Cells ◽  
Two Dimensional ◽  
Hole Transporting ◽  
Hole Transporting Material

Air-Stable MXene/GaAs Heterojunction Solar Cells with a High Initial Efficiency of 9.69%

2021 ◽  
Author(s):  
Zhijie Zhang ◽  
Jing Lin ◽  
Peiye Sun ◽  
Qinghao Zeng ◽  
Xi Deng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
High Efficiency ◽  
Low Cost ◽  
Heterojunction Solar Cell ◽  
Two Dimensional ◽  
2D Material ◽  
Heterojunction Solar Cells ◽  
Photovoltaic Applications ◽  
Excellent Stability

Two-dimensional (2D) material-based heterojunction solar cells have attracted significant interests due to their potential in low-cost photovoltaic applications. Herein, a novel MXene/GaAs heterojunction solar cell with high-efficiency and excellent stability...

scholarly journals Two-Dimensional Modeling of Silicon Nanowires Radial Core-Shell Solar Cells

2018 ◽  
Vol 2018 ◽  
pp. 1-7
Author(s):  
Qiang Zeng ◽  
Na Meng ◽  
Yulong Ma ◽  
Han Gu ◽  
Jing Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Silicon Nanowires ◽  
Light Absorption ◽  
Low Cost ◽  
Light Trapping ◽  
Electrical Performance ◽  
Core Shell ◽  
Two Dimensional ◽  
Strong Light ◽  
The Impact

Silicon nanowires radial core-shell solar cells have recently attracted significant attention as promising candidates for low cost photovoltaic application, benefit from its strong light trapping, and short radial carrier collection distances. In order to establish optics and electricity improvement, a two-dimensional model based on Shockley-Read-Hall recombination modes has been carried out for radial core-shell junction nanowires solar cell combined with guided resonance modes of light absorption. The impact of SiNWs diameter and absorption layer thickness on device electrical performance based on a fixed nanowires height and diameter-over-periodicity were investigated under illumination. The variation in quantum efficiency indicated that the performance is limited by the mismatch between light absorption and carriers’ collection length.

scholarly journals Two-Dimensional Nanomaterials for Boosting the Performance of Organic Solar Cells

Coatings ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1530
Author(s):  
Zhenbang Wei ◽  
Langkun Chen ◽  
Kunzhu Liu ◽  
Shenghua Liu ◽  
Xiangguo Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Large Scale ◽  
2D Materials ◽  
Low Cost ◽  
Transition Metal Dichalcogenides ◽  
Two Dimensional ◽  
Photoelectric Properties ◽  
Metal Dichalcogenides ◽  
Photovoltaic Technologies

The thin-film organic solar cells (OSCs) are currently one of the most promising photovoltaic technologies to effectively harvest the solar energy due to their attractive features of mechanical flexibility, light weight, low-cost manufacturing, and solution-processed large-scale fabrication, etc. However, the relative insufficient light absorption, short exciton diffusion distance, and low carrier mobility of the OSCs determine the power conversion efficiency (PCE) of the devices are relatively lower than their inorganic photovoltaic counterparts. To conquer the challenges, the two-dimensional (2D) nanomaterials, which have excellent photoelectric properties, tunable energy band structure, and solvent compatibility etc., exhibit the great potential to enhance the performance of the OSCs. In this review, we summarize the most recent successful applications of the 2D materials, including graphene, black phosphorus, transition metal dichalcogenides, and g-C3N4, etc., adapted in the charge transporting layer, the active layer, and the electrode of the OSCs, respectively, for boosting the PCE and stability of the devices. The strengths and weaknesses of the 2D materials in the application of OSCs are also reviewed in details. Additionally, the challenges, commercialization potentials, and prospects for the further development of 2D materials-based OSCs are outlined in the end.

A Review on the Two-Dimensional Graphene Exploited in Organic Solar Cells Applications

2015 ◽  
Vol 1109 ◽  
pp. 514-518 ◽  
Author(s):  
M.S. Shamsudin ◽  
S.M. Sanip
Keyword(s):  
Solar Cells ◽  
Transport Properties ◽  
Organic Solar Cells ◽  
Low Cost ◽  
Two Dimensional ◽  
Free Standing ◽  
Transparent Conductive Electrode ◽  
Electron Transport Properties ◽  
Improved Performance ◽  
Good Transparency

Energy production and storage are both issues with increasing demands for improved performance and the requirement for greener energy resources constitute immense research interest. Graphene, (Gr) has incurred intense interest since its free standing form was isolated in 2004. Gr has immense potential to be used for low-cost, flexible, and highly efficient organic solar cells (OSC) due to its excellent electron-transport properties and extremely high carrier mobility. Numerous Gr-based OSC have been reported, in which Gr serves as different parts of the cell. One of the reasons for the current interest in Gr is the great potential for transparent conductive electrode (i.e. anode or cathode) in OSC. Gr is an ideal two-dimensional material which can be assembled into film electrodes with good transparency, high conductivity, and low roughness. Besides the potential to act as a transparent conductive electrode, Gr also has other attractive properties for solar devices. For example, Gr has been incorporated into photo-active conjugated polymers to improve the excitons (e-/h+ pairs) dissociation and the charge-transport properties of the materials. Additionally, Gr also has potential to be used as an interfacial photo-active layer, since its band gap and band-position can be induced and tuned via chemical functionalization or by controlling the size of the Gr sheets. Although Gr is still a relatively new material it has already made a wide and diverse impact and this review will enlighten us towards using Gr as a novel material for future energy storage/generation applications.

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

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

<p>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 BiFeO<sub>3</sub> (BFO)/Ti<sub>3</sub>C<sub>2</sub> (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 m<sup>2</sup>g<sup>-1</sup>measured 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 BiFeO<sub>3</sub> which makes it a promising candidate for many future applications.</p>

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