1D semiconductor nanowires for energy conversion, harvesting and storage applications

Nehra, Monika; Dilbaghi, Neeraj; Marrazza, Giovanna; Kaushik, Ajeet; Abolhassani, Reza; Mishra, Yogendra Kumar; Kim, Ki‐Hyun; Kumar, Sandeep

doi:10.1016/j.nanoen.2020.104991

Cited by 101 publications

(59 citation statements)

References 344 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where ω, c, and E0 is the angular frequency, the speed of light and the electric field intensity of the solar incident light; 0  and   are the permittivities in air, and the imaginary part of the permittivity of Si; n and k are the real and imaginary part of the complex refractive index of Si (i.e., m=n+ik, m 2…”

Section: The Absorption Efficiency and Mode Profilementioning

confidence: 99%

“…Single nanowire (NW) solar cells have attracted more and more research interests as nanoelectronic power sources in recent years due to their unique characteristics, such as enhanced light-harvesting capability, efficient carrier collection, ultra-compact volume, large surface area, and convenience of integrating with optoelectronic nanosystems [1][2][3][4][5][6][7][8]. Besides its potential applications as power sources for nanoelectronic devices, single NW solar cell is also helpful to understand the mechanism of the self-assembled NW-based solar cells [7][8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Off-Resonant Absorption Enhancement in Single Nanowires via Graded Dual-Shell Design

Liu

Guo

Xing

et al. 2020

Preprint

View full text Add to dashboard Cite

Single nanowires (NWs) are of great importance for optoelectronic applications, especially solar cells serving as powering nanoscale devices. However, weak off-resonant absorption can limit its light-harvesting capability. Here, we propose a single NW coated with the graded-index dual shells (DSNW). We demonstrate that with appropriate thickness and refractive index of the inner shell, the DSNW exhibits significantly enhanced light trapping compared with the bare NW (BNW), and the NW only coated with the outer shell (OSNW) and the inner shell (ISNW), which can be attributed to the optimal off-resonant absorption mode profiles due to the improved coupling between the reemitted light of the transition modes of the leak mode resonances of the Si core and the nanofocusing light from the dual shells with the graded refractive index. We found that the light absorption can be engineered via tuning the thickness and the refractive index of the inner shell, the photocurrent density is significantly enhanced by 134% (56%, 12%) in comparison with that of the BNW (OSNW, ISNW). This work advances our understanding of how to improve off-resonant absorption by applying graded dual-shell design and provides a new choice for designing high-efficiency single NW photovoltaic devices.

show abstract

Section: The Absorption Efficiency and Mode Profilementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Off-Resonant Absorption Enhancement in Single Nanowires via Graded Dual-Shell Design

Liu

Guo

Xing

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…Single nanowire (NW) solar cells have attracted more and more research interests as nanoelectronic power sources in recent years due to their unique characteristics, such as enhanced light-harvesting capability, efficient carrier collection, ultra-compact volume, large surface area and convenience of integrating with optoelectronic nanosystems [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ]. Besides its potential applications as power sources for nanoelectronic devices, single NW solar cell is also helpful to understand the mechanism of the self-assembled NW-based solar cells [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Off-Resonant Absorption Enhancement in Single Nanowires via Graded Dual-Shell Design

et al. 2020

View full text Add to dashboard Cite

Single nanowires (NWs) are of great importance for optoelectronic applications, especially solar cells serving as powering nanoscale devices. However, weak off-resonant absorption can limit its light-harvesting capability. Here, we propose a single NW coated with the graded-index dual shells (DSNW). We demonstrate that, with appropriate thickness and refractive index of the inner shell, the DSNW exhibits significantly enhanced light trapping compared with the bare NW (BNW) and the NW only coated with the outer shell (OSNW) and the inner shell (ISNW), which can be attributed to the optimal off-resonant absorption mode profiles due to the improved coupling between the reemitted light of the transition modes of the leak mode resonances of the Si core and the nanofocusing light from the dual shells with the graded refractive index. We found that the light absorption can be engineered via tuning the thickness and the refractive index of the inner shell, the photocurrent density is significantly enhanced by 134% (56%, 12%) in comparison with that of the BNW (OSNW, ISNW). This work advances our understanding of how to improve off-resonant absorption by applying graded dual-shell design and provides a new choice for designing high-efficiency single NW photovoltaic devices.

show abstract

“…Single nanowire (NW) solar cells have increasingly attracted attention in recent years due to the following reasons [1][2][3][4][5][6][7][8]. Firstly, single NW solar cells can serve as nanoscale power sources integrated seamlessly with nanoelectronics.…”

Section: Introductionmentioning

confidence: 99%

Light Trapping in Single Elliptical Silicon Nanowires

Liu

Wang

Guo

et al. 2020

Preprint

View full text Add to dashboard Cite

Light trapping in single nanowires (NWs) are of vital importance for photovoltaic applications. However, circular NWs (CNWs) can limit its light-trapping ability due to high geometrical symmetry. In this work, we present a detailed study of light trapping in single NWs with an elliptical cross-section (ENWs). We demonstrate that the ENWs exhibit significantly enhanced light trapping compared with the CNWs, which can be ascribed to the symmetry-broken structure that can orthogonalize the direction of light illumination and the leaky mode resonances (LMRs). That is, the elliptical cross-section can simultaneously increase the light path length by increasing the vertical axis and reshape the LMR modes by decreasing the horizontal axis. We found that the light absorption can be engineered via tuning the horizontal and vertical axes, the photocurrent is significantly enhanced by 374.0% (150.3%, 74.1%) or 146.1% (61.0%, 35.3%) in comparison with that of the CNWs with the same diameter as the horizontal axis of 100 (200, 400) nm or the vertical axis of 1000 nm, respectively. This work advances our understanding of how to improve light trapping based on the symmetry breaking from the CNWs to ENWs and provides a rational way for designing high-efficiency single or self-assembled NW photovoltaic devices.

show abstract

1D semiconductor nanowires for energy conversion, harvesting and storage applications

Cited by 101 publications

References 344 publications

Off-Resonant Absorption Enhancement in Single Nanowires via Graded Dual-Shell Design

Off-Resonant Absorption Enhancement in Single Nanowires via Graded Dual-Shell Design

Off-Resonant Absorption Enhancement in Single Nanowires via Graded Dual-Shell Design

Light Trapping in Single Elliptical Silicon Nanowires

Contact Info

Product

Resources

About