scholarly journals Enhanced Light-Harvesting in Single Rectangular Silicon Nanowires

2021 ◽  
Vol 16 (3) ◽  
pp. 428-433
Author(s):  
Wenfu Liu ◽  
Xin Lio ◽  
Yinling Wang ◽  
Bin Wen
Keyword(s):  
Solar Cells ◽  
Silicon Nanowires ◽  
Light Harvesting ◽  
Numerical Results ◽  
Leaky Mode ◽  
Light Path ◽  
Vertical Side ◽  
Single Nanowires ◽  
Horizontal Side

Light-harvesting of single nanowires is very crucial to enhance conversion efficency of solar cells. Here, we systematically examined light-harvesting of single rectangular nanowires and found that light-harvesting of rectangular nanowires is increased contrasted with that of square nanowires, which is because decreasing the horizontal side can strengthen the leaky mode resonances and increasing the vertical side can increase the length of the light path. Numerical results showed that the photocurrent of single rectangular silicon nanowires is dramatically enhanced by 82.9% or 276.5% in comparison with that of square nanowires with the same vertical side (1000 nm) or horizontal side (100 nm), respectively. This work indicates that light-harvesting of single nanowires can be improved by decreasing the symmetry from the square to rectangular nanowires.

scholarly journals Improving Absorption in Single Silicon Nanowires by Symmetry-breaking Design from Square to Rectangular Cross-section

2021 ◽  
Author(s):  
Wenfu Liu
Keyword(s):  
Symmetry Breaking ◽  
Silicon Nanowires ◽  
Light Absorption ◽  
High Efficiency ◽  
Rectangular Cross Section ◽  
Photovoltaic Devices ◽  
Vertical Side ◽  
Photovoltaic Applications ◽  
Single Nanowires ◽  
Horizontal Side

Light absorption in single nanowires (NWs) is one of the most crucial factors for photovoltaic applications. In this paper, we carried out a detailed investigation of light absorption in single rectangular NWs (RNWs). We show that the RNWs exhibit improved light absorption compared with the square NWs (SNWs), which can be attributed to the symmetry-breaking structure that can increase the light path length by increasing the vertical side and the enhanced leaky mode resonances (LMRs) by decreasing the horizontal side. We found that the light absorption in silicon RNWs can be enhanced by engineering the horizontal and vertical sides, the photocurrent is significantly increased by 276.5% or 82.9% compared with that of the SNWs with the same side length as the horizontal side of 100 nm or the vertical side of 1000 nm, respectively. This work provides an effective way for designing high-efficiency single NW photovoltaic devices based on the symmetry breaking from the SNWs to RNWs.

scholarly journals Light Management in Single Rectangular Silicon Nanowires for Photovoltaic Applications

2020 ◽  
Author(s):  
Wenfu Liu
Keyword(s):  
Cross Section ◽  
Silicon Nanowires ◽  
High Efficiency ◽  
Light Harvesting ◽  
Rectangular Cross Section ◽  
Light Illumination ◽  
Vertical Side ◽  
Photovoltaic Applications ◽  
Light Management ◽  
Horizontal Side

Light management in single nanowires (NWs) is of great importance for photovoltaic applications. However, square NWs (SNWs) can limit their light-trapping ability due to high geometrical symmetry. In this work, we present a detailed study of light management in single silicon NWs with a rectangular cross-section (RNWs). We demonstrate that the RNWs exhibit significantly enhanced light-harvesting compared with the SNWs, which can be attributed to the symmetry-broken structure that can orthogonalize the direction of light illumination and the leaky mode resonances (LMRs). That is, the rectangular cross-section can simultaneously increase the light path length by increasing the vertical side and reshape the LMR modes by decreasing the horizontal side. We found that the light absorption can be engineered via tuning the horizontal and vertical sides, the photocurrent is significantly enhanced by 276.5% or 82.9% in comparison with that of the SNWs with the same side length as the horizontal side of 100 nm or the vertical side of 1000 nm, respectively. This work advances our understanding of how to improve light-harvesting based on the symmetry breaking from the SNWs to RNWs and provides an effective way for designing high-efficiency single NW photovoltaic devices.

Co-sensitization promoted light harvesting for plastic dye-sensitized solar cells

2011 ◽  
Vol 196 (4) ◽  
pp. 2416-2421 ◽  
Author(s):  
Kun-Mu Lee ◽  
Ying-Chan Hsu ◽  
Masashi Ikegami ◽  
Tsutomu Miyasaka ◽  
K.R. Justin Thomas ◽  
...  
Keyword(s):  
Solar Cells ◽  
Light Harvesting ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Graphene Nanoparticles Decorated Silicon Nanowires with Tungsten Oxide Counter Electrode for Quasi-Solid State Hybrid Solar Cells

2021 ◽  
Author(s):  
Ankita Kolay ◽  
Manoranjan Ojha ◽  
Melepurath Deepa
Keyword(s):  
Ionic Liquid ◽  
Solar Cells ◽  
Solid State ◽  
Tungsten Oxide ◽  
Silicon Nanowires ◽  
Counter Electrode ◽  
Near Infrared ◽  
Hybrid Solar Cells ◽  
Functionalized Graphene ◽  
Graphene Nanoparticles

Anchoring ionic liquid functionalized graphene nanoparticles (IL-GNP) to silicon nanowires (SiNW) improves the solar spectral utilization from visible to near infrared (NIR). Due to the bandgap of IL-GNP in the...

On the nature of plasmon-induced photocurrent enhancement in Bacteriochlorophyll c sensitized solar cells: Towards red light harvesting

2021 ◽  
Vol 258 ◽  
pp. 123932
Author(s):  
Lekha Peedikakkandy ◽  
Ondřej Pavelka ◽  
Martina Alsterová ◽  
Anna Fučíková ◽  
Jakub Dostál ◽  
...  
Keyword(s):  
Solar Cells ◽  
Light Harvesting ◽  
Red Light ◽  
Bacteriochlorophyll C ◽  
Sensitized Solar Cells

Band-gap-graded Cu2ZnSn(S,Se)4 drives high efficient solar cells

2022 ◽  
Author(s):  
Hongling Guo ◽  
Rutao Meng ◽  
Gang Wang ◽  
Shenghao Wang ◽  
Li Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Light Harvesting ◽  
Absorber Layer ◽  
Photovoltaic Application ◽  
High Efficient

Fabrication of high efficient solar cells is critical for photovoltaic application. The bandgap-graded absorber layer can not only drive carriers efficient collection but also improve the light harvesting. However, it...

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