scholarly journals Graphene-Tapered ZnO Nanorods Array as a Flexible Antireflection Layer

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Taeseup Song
Keyword(s):  
Mechanical Property ◽  
Solar Cells ◽  
Graphene Sheet ◽  
Conversion Efficiency ◽  
Light Transmission ◽  
Flexible Substrate ◽  
Zno Nanorods ◽  
Two Dimensional ◽  
Nanorods Array ◽  
Conformal Coverage

Flexible solar cells have drawn a great deal of attention due to their various advantages including deformable and wearable characteristics. In the solar cells, the antireflection layer plays an important role in the improvement in the conversion efficiency by increasing the light transmission and suppressing the Fresnel refraction. For the successful implantation of the antireflection layer into the flexible solar cells, the flexible mechanical property of the antireflection layer is also necessary. However, the study on flexible antireflection layer for the flexible solar cells or optoelectronics is still lacking. In this study, we report the graphene-tapered ZnO nanorods array as a flexible antireflection layer for the application in flexible solar cells. Flexible two-dimensional graphene sheet and the tapered morphology of ZnO nanorods enable conformal coverage on the flexible substrate with curved surface and significant improvements in antireflection properties, respectively.

scholarly journals Two-dimensional or passivation treatment: the effect of Hexylammonium post deposition treatment on 3D halide perovskite-based solar cells

2021 ◽  
Author(s):  
Stav Rahmany ◽  
Lioz Etgar
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Two Dimensional ◽  
Theoretical Limit ◽  
Halide Perovskite ◽  
Passivation Treatment ◽  
Post Deposition

Much effort has been made to push the power conversion efficiency of perovskite solar cells (PSCs) towards the theoretical limit. Recent studies have shown that post deposition treatment of barrier...

scholarly journals Morphological Study of Zinc-Oxide Nanorods Grown by Hot Water Treatment Suitable for Solar Cells Conversion Efficiency Enhancement

2020 ◽  
Author(s):  
Mohammad Khairul Basher ◽  
S. M. Shah Riyadh ◽  
Md. Khalid Hossain ◽  
Mahmudul Hassan ◽  
Md. Abdur Rafiq Akand ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Solar Cells ◽  
Water Treatment ◽  
Conversion Efficiency ◽  
Zno Nanorods ◽  
Hot Water ◽  
Zinc Oxide Nanorods ◽  
Hot Water Treatment ◽  
Time Duration ◽  
Zinc Surface

Zinc-oxide (ZnO) nanostructures including nanorods are currently considered as a pioneer research of interest world-wide due to their excellent application potentials in various applied fields especially for the improvement of energy harvesting photovoltaic solar cells (PSC). We report on the growth and morphological properties of zinc-oxide (ZnO) nanorods grown on the surface of plain zinc (non-etched and chemically etched) plates by using a simple, economical, and environment-friendly technique. We apply hot water treatment (HWT) technique to grow the ZnO nanorods and varies the process parameters, such as temperature and the process time duration. The morphological, and elemental analysis confirm the agglomeration of multiple ZnO nanorods with its proper stoichiometry. The obtained nanostructures for different temperatures with different time duration showed the variation in uniformity, density, thickness and nanonorods size. The ZnO nanorods produced on the etched zinc surface were found thicker and uniform as compared to those grown on the non-etched zinc surface. This chemically etched Zinc plates preparation can be an easy solution to grow ZnO nanorods with high density and uniformity suitable for PSC applications such as to enhance the energy conversion efficiency of the photovoltaic (PV) solar cells towards the future sustainable green earth.

A review on two-dimensional (2D) perovskite material-based solar cells to enhance the power conversion efficiency

2022 ◽  
Author(s):  
Ehsan Elahi ◽  
Ghulam Dastgeer ◽  
Abdul Subhan Siddiqui ◽  
Supriya A. Patil ◽  
Muhammad Waqas Iqbal ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Two Dimensional ◽  
Rapid Progress ◽  
Perovskite Materials ◽  
Perovskite Material

With perovskite materials, rapid progress in power conversion efficiency (PCE) to reach 25% has gained a significant amount of attention from the solar cell industry.

Novel donor–acceptor polymers containing o-fluoro-p-alkoxyphenyl-substituted benzo[1,2-b:4,5-b′]dithiophene units for polymer solar cells with power conversion efficiency exceeding 9%

2016 ◽  
Vol 4 (26) ◽  
pp. 10212-10222 ◽  
Author(s):  
Ning Wang ◽  
Weichao Chen ◽  
Wenfei Shen ◽  
Linrui Duan ◽  
Meng Qiu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Polymer Solar Cells ◽  
Power Conversion ◽  
Two Dimensional ◽  
Donor Acceptor ◽  
Additive Treatment

A PCE of 9.02% for a two-dimensional polymer as donor applied in solar cells was obtained without any additive treatment.

Improving photovoltaic performance of perovskite solar cells: The interfacial modification role of aluminum chloride and ammonia on ZnO nanorods

2017 ◽  
Vol 10 (03) ◽  
pp. 1750017 ◽  
Author(s):  
Zhaosong Li ◽  
Jun Zhang ◽  
Yang Xu ◽  
Mengni Xue ◽  
Hanbin Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Aluminum Chloride ◽  
Light Transmission ◽  
Photovoltaic Performance ◽  
Zno Nanorods ◽  
Perovskite Solar Cells ◽  
Precursor Solution ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Primary Advantage

ZnO nanorods (ZnO NRs) as electron transport layer (ETL) in organometal halide perovskite solar cells (PSCs) had been prepared because of ZnO exhibiting excellent electron mobility and light transmission performance. The ZnO NRs were modified with a simple solvothermal method using aluminum chloride (AlCl3) and ammonia (NH[Formula: see text]H2O) as precursor solution, the primary advantage of this approach was low temperature, simple process. The concentration of the precursor solution was further investigated, and a power conversion efficiency (PCE) of 12.1% was achieved.

scholarly journals ZnO-CuO core-shell heterostructure for improving the efficiency of ZnO-based dye-sensitized solar cells

MRS Advances ◽  
2017 ◽  
Vol 2 (15) ◽  
pp. 857-862 ◽  
Author(s):  
Kichang Jung ◽  
Taehoon Lim ◽  
Yaqiong Li ◽  
Alfredo A. Martinez-Morales
Keyword(s):  
Solar Cells ◽  
Thermal Oxidation ◽  
Conversion Efficiency ◽  
Seed Layer ◽  
Near Infrared ◽  
Zno Nanorods ◽  
Dye Sensitized Solar Cells ◽  
Core Shell ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

ABSTRACTIn this work, the integration of ZnO-CuO core-shell nanostructures shows improvement in the conversion efficiency of ZnO-based dye-sensitized solar cells (DSSCs). This is due to CuO acting as a secondary absorption layer that allows the absorption of near-infrared (NIR) light increasing the generated photocurrent in the device, and as a blocking layer that reduces electron-hole recombination. The ZnO core and encapsulating CuO shell are synthesized through chemical vapor deposition (CVD), and thermal oxidation of a Cu seed layer, respectively. The crystallinity of the synthesized ZnO and CuO is analyzed by X-ray diffraction (XRD). Scanning electron microscope (SEM) images show the change in morphology through the steps of Cu seed layer deposition and thermal oxidation of this layer. To determine optical properties of CuO on ZnO nanorods, UV-Vis-NIR photospectrocopy is used. The comparison of conversion efficiency of DSSCs using two different photoelectrodes (i.e. ZnO nanorods versus ZnO-CuO core-shell nanostructure) is performed by I-V measurements.

Preparation and Photovoltaic Properties of Dye Sensitized Solar Cells Using ZnO Nanorods Stacking Films on AZO Substrate as Photoanode

2016 ◽  
Vol 16 (4) ◽  
pp. 3622-3627
Author(s):  
Yang Xu ◽  
Xina Wang ◽  
Rong Liu ◽  
Hao Wang
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Zno Nanorods ◽  
Dye Sensitized Solar Cells ◽  
Growth Time ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Light Power ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Three-dimensional stacking of ZnO nanorods on conducting aluminum-doped ZnO (AZO) glass were studied as efficient photoanodes of dye sensitized solar cells (DSSCs). By changing hydrothermal growth time and cycle times, the thickness of ZnO nanorods stacking films varied from 30 μm to 64 μm, and its influence on the energetic conversion efficiency of the DSSCs based on the stacking films photoanodes was investigated. The loading density of N719 on the surface of ZnO nanorods was studied to increase the efficiency of the cells. Annealing experiments showed that the AZO substrates remained good conductors until heated above 350 °C. A photoelectric conversion efficiency as high as ∼2.0% together with Isc of ∼9.5 mA/cm2, Voc of ∼0.5 V and FF of ∼41.4% was achieved for the DSSC using 50 μm-thick film stacking by ZnO nanorods as photoanode and N719 as sensitizer under illumination of AM1.5G solar light (power density of 100 mW/cm2). A charge separation and transfer mechanism was proposed for the ZnO nanorods stacking electrode-based DSSCs.

Stable high efficiency two-dimensional perovskite solar cells via cesium doping

2017 ◽  
Vol 10 (10) ◽  
pp. 2095-2102 ◽  
Author(s):  
Xu Zhang ◽  
Xiaodong Ren ◽  
Bin Liu ◽  
Rahim Munir ◽  
Xuejie Zhu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Two Dimensional

Cs+ doping into 2D (BA)2(MA)3Pb4I13 perovskites boosts power conversion efficiency (PCE) to 13.7% and yields superior humidity and thermal stability.

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