Optical absorption enhancement of nanoconical frustum arrays texturing for c-Si film solar cells

Wangyang, Peihua; Wang, Qingkang; Hu, Kexiang; Shen, Xiangqian

doi:10.1016/j.optcom.2013.07.014

Cited by 5 publications

(5 citation statements)

References 25 publications

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“…1a and b), which is known to be very efficient for lower optical reectance over a broad wavelength range. 16,21,22 The top diameter has been shown to be insensitive to the spectral response and, hence, was set to 120 nm. 22 Three different values for the height (H) and bottom diameter (D) were tested, and the resulting optical properties were compared based on numerical calculations (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…From previous reports, D values, comparable to the peak wavelength of solar radiation (i.e., visible wavelength), were chosen, to take full advantage of diffraction for efficient light trapping. [22][23][24][25] Larger heights (H) can cause signicant surface recombination loss; hence, the height was set to <1 mm in this study. 17 The thickness of the underlying Si wafer was set to 10 mm, to examine the potential of the ultrathin device.…”

Section: Resultsmentioning

confidence: 99%

“…The inuence of surface nanopatterns on optical transmission in a thin Si layer has been reported. 17,21,22,25 Based on calculations, Wang and Leu reported that a large aspect ratio increased the transmission loss and limited absorption in their Si nanoconical frustum array, having a height of a few microns. 21 Their results clearly showed a substantial difference in the structural requirements for antireection and light trapping.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Wafer-scale nanoconical frustum array crystalline silicon solar cells: promising candidates for ultrathin device applications

et al. 2014

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Wafer-scale nanoconical frustum array crystalline silicon solar cells: promising candidates for ultrathin device applications

et al. 2014

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“…Wangyang et al characterized silicon square nano-conical frustum (SiSNF) arrays for PV application through simulation. The solar cells based on the optimized SiSNF yielded an ultimate efficiency of 31.60%, which is 3.47% higher than that of silicon hexagonal nano-conical frustum (SiHNF) arrays of textured surface-based solar cells, which is close to perfect Yablonovitch surface [387]. Also, it is observed that efficiency is unaffected by the incident angles and top diameter.…”

Section: Potential Light Trapping Structuresmentioning

confidence: 89%

Anti-Reflective Coating Materials: A Holistic Review from PV Perspective

Natarajan

Pugazhendhi

Elavarasan³

et al. 2020

Energies

134

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The solar photovoltaic (PV) cell is a prominent energy harvesting device that reduces the strain in the conventional energy generation approach and endorses the prospectiveness of renewable energy. Thus, the exploration in this ever-green field is worth the effort. From the power conversion efficiency standpoint of view, PVs are consistently improving, and when analyzing the potential areas that can be advanced, more and more exciting challenges are encountered. One such crucial challenge is to increase the photon availability for PV conversion. This challenge is solved using two ways. First, by suppressing the reflection at the interface of the solar cell, and the other way is to enhance the optical pathlength inside the cell for adequate absorption of the photons. Our review addresses this challenge by emphasizing the various strategies that aid in trapping the light in the solar cells. These strategies include the usage of antireflection coatings (ARCs) and light-trapping structures. The primary focus of this study is to review the ARCs from a PV application perspective based on various materials, and it highlights the development of ARCs from more than the past three decades covering the structure, fabrication techniques, optical performance, features, and research potential of ARCs reported. More importantly, various ARCs researched with different classes of PV cells, and their impact on its efficiency is given a special attention. To enhance the optical pathlength, and thus the absorption in solar PV devices, an insight about the advanced light-trapping techniques that deals with the concept of plasmonics, spectral modification, and other prevailing innovative light-trapping structures approaching the Yablonovitch limit is discussed. An extensive collection of information is presented as tables under each core review section. Further, we take a step forward to brief the effects of ageing on ARCs and their influence on the device performance. Finally, we summarize the review of ARCs on the basis of structures, materials, optical performance, multifunctionality, stability, and cost-effectiveness along with a master table comparing the selected high-performance ARCs with perfect AR coatings. Also, from the discussed significant challenges faced by ARCs and future outlook; this work directs the researchers to identify the area of expertise where further research analysis is needed in near future.

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“…Of all these factors indicated above, the guide-mode resonance has the strongest effect to the absorption improvement. 25) Moreover, because of the interference between the dielectric cladding layer and Si nanostructure, CNCG decorated Si solar cells have more oscillation in the absorption spectra than NCG decorated Si solar cells do. Overall, the absorption in SiN (120 nm)=Si CNCG decorated solar cell seems to be higher than that in other solar cells, which is due to the optimized balance among these contribution factors including surface antireflection, guided-mode resonance, cavity resonance and interface interference.…”

Section: Normalized Absorptionmentioning

confidence: 99%

Efficiency improvement in Si thin film solar cells by employing composite nanocone-shaped grating structure

Zhang

Qiu

Shao

et al. 2015

Jpn. J. Appl. Phys.

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The improvement in both the light absorption and energy conversion efficiency for thin film silicon solar cells by employing Al2O3/Si or SiN/Si composite nanocone-shaped gratings (CNCG) is theoretically studied. Our results show that the enhancement of the absorption and efficiency for Si thin film solar cells decorated by CNCG is mainly dominated by the nanocone-shaped gratings, but slightly fluctuated with the dielectric cladding layer and its thickness. The performance improvement is more significant using SiN/Si CNCG than using Al2O3/Si CNCG. The highest conversion efficiency of 6.60 and 9.53% are achieved in 1-µm-thick solar cells with SiN (120 nm)/Si CNCG and 2-µm-thick Si solar cells with SiN (90 nm)/Si CNCG respectively, which are compared to the conversion efficiencies of 3.23 and 3.96% for their planar counterparts. When the surface passivation effect is considered, the conversion efficiency should be enhanced more.

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Optical absorption enhancement of nanoconical frustum arrays texturing for c-Si film solar cells

Cited by 5 publications

References 25 publications

Wafer-scale nanoconical frustum array crystalline silicon solar cells: promising candidates for ultrathin device applications

Wafer-scale nanoconical frustum array crystalline silicon solar cells: promising candidates for ultrathin device applications

Anti-Reflective Coating Materials: A Holistic Review from PV Perspective

Efficiency improvement in Si thin film solar cells by employing composite nanocone-shaped grating structure

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