Optimization of multilayer antireflection coating for photovoltaic applications

Sikder, Urmita; Zaman, Mohammad Asif

doi:10.1016/j.optlastec.2015.11.011

Cited by 40 publications

(26 citation statements)

References 23 publications

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“…It has also been observed that the light reflection for 300 nm and 350 nm nano-grating height is very close. This nano-grating height for light reflection is minimum and it is saturated, which is the similar tendency as reported in [3]. When the nano-grating height increases further, such as the nano-grating height is 400 nm, the light reflection again increases as shown in Figure 7.…”

Section: Simulation Results and Discussionsupporting

confidence: 83%

“…It was calculated that an intermediate coating between the air and plain glass substrate can reduce the reflection losses by half (which is about 50%). However, the formation of an AR coating film can be a complex process and there are several drawbacks, such as adhesion, thermal mismatch, and instability under thermal cycling [2][3][4]8].…”

Section: Antireflection Coatingmentioning

confidence: 99%

“…Therefore, the SWG structures can provide gradual changes of the refractive index that confirm an excellent antireflective (AR) and light-trapping properties into the substrate compared to a planaror flat-type thin film substrates [1,2]. This type of nano-grating or nano-rod structure performs as a single layer AR coating, whereas the triangular (such as, conical or perfect cone) and parabolic shaped nano-grating structures are performing as a multilayer broadband AR coating [3][4][5][6][7][8]. There are some other reports found in the literature related to improving the optical gain in solar cell systems, including surface plasmon resonance-based multilayer structures and also a new design of GaAs solar cells [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…Among them, the reflection loss is one of the most important factor that decreases the conversion efficiency of solar cells significantly. The thin-film AR coating can minimize the reflection losses only for certain ranges of wavelengths and the formation of coating on film can be a complex process, as well as having several drawbacks, such as, adhesion and thermal mismatch, etc., and the instability under thermal cycling [2][3][4]8]. Therefore, the SWG structure (i.e., triangular or conical shaped) has a gradual change in refractive index that lead to a lesser reflection losses over a wide range of wavelengths and the angle of incidences [2,8,[13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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Design and Analysis of Nano-Structured Gratings for Conversion Efficiency Improvement in GaAs Solar Cells

Das

Islam

2016

Energies

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This paper presents the design and analysis of nano-structured gratings to improve the conversion efficiency in GaAs solar cells by reducing the light reflection losses. A finite-difference time domain (FDTD) simulation tool is used to design and simulate the light reflection losses of the subwavelength grating (SWG) structure in GaAs solar cells. The SWG structures perform as an excellent alternative antireflective (AR) coating due to their capacity to reduce the reflection losses in GaAs solar cells. It allows the gradual change in the refractive index that confirms an excellent AR and the light trapping properties, when compared with the planar thin film structures. The nano-rod structure performs as a single layer AR coating, whereas the triangular (i.e., conical or perfect cone) and parabolic (i.e., trapezoidal/truncated cone) shaped nano-grating structures perform as a multilayer AR coating. The simulation results confirm that the reflection loss of triangular-shaped nano-grating structures having a 300-nm grating height and a 830-nm period is about 2%, which is about 28% less than the flat type substrates. It also found that the intermediate (i.e., trapezoidal and parabolic)-shaped structures, the light reflection loss is lower than the rectangular shaped nano-grating structure, but higher than the triangular shaped nano-grating structure. This analysis confirmed that the triangular shaped nano-gratings are an excellent alternative AR coating for conversion efficiency improvement in GaAs solar cells.

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Section: Simulation Results and Discussionsupporting

confidence: 83%

Section: Antireflection Coatingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Design and Analysis of Nano-Structured Gratings for Conversion Efficiency Improvement in GaAs Solar Cells

Das

Islam

2016

Energies

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“…It is important to note that the antireflection coating applied on the front surface of the solar cell can affect its performance [22]. Then, it is expected that tellurite glass-covered solar cells will have different efficiencies than the naked solar cell.…”

Section: Resultsmentioning

confidence: 99%

Efficiency enhancement in solar cells using photon down-conversion in Tb/Yb-doped tellurite glass

Florêncio

Malagón

Lima

et al. 2016

Solar Energy Materials and Solar Cells

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Management of the solar spectrum incident on a solar cell was studied using tellurite glasses doped with Tb 3 þ and Yb 3 þ ions as a cover slip. From the transmittance measurements through the doped glass, a red-shift of the solar spectrum was observed and the mechanisms involved in this phenomena were investigated through the absorption spectra and luminescent measurements. Energy transfer of the UV radiation into VIS and IR radiation was elucidated by analyzing the emission spectra. From the results, the power dependence of the Yb 3 þ IR luminescence on the pumping laser intensity at 482 nm revealed that the energy transfer mechanism involving a virtual state was predominant in these samples. Total quantum efficiency higher than 100% was obtained for the sample co-doped with 1% of Tb 3 þ ions and 5% of Yb 3 þ ions. The efficiency of commercial Silicon and Gallium Phosphide (GaP) solar cells, covered with tellurite glasses doped with Tb 3 þ and Yb 3 þ ions, was measured and compared to the efficiency with an un-doped the cover glass. Efficiency enhancement was observed with a dependence on the rare earth ions concentrations, and the results were attributed to the modification of the spectral profile of the incident radiation in the IR region.

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High‐low refractive index stacks as antireflection coatings on triple‐junction solar cells

Hou

García‐Tabarés

García

et al. 2022

Progress in Photovoltaics

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Antireflection coatings (ARCs) are crucial components of high-efficiency solar cells. A new ARC design philosophy, dubbed high-low refractive index stacks, has demonstrated good potential to minimize reflection losses for triple-junction and quadruplejunction solar cells in simulations. We have implemented such novel ARCs on GaInP/ InGaAs/Ge triple-junction solar cells and compared the experimental performancesexternal quantum efficiency and reflectivity-with that of identical devices equipping the classic double-layer ARC. For typical materials such as MgF 2 /ZnS with ambient glass, the results show that the new design improves the short circuit current by

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Optimization of multilayer antireflection coating for photovoltaic applications

Cited by 40 publications

References 23 publications

Design and Analysis of Nano-Structured Gratings for Conversion Efficiency Improvement in GaAs Solar Cells

Design and Analysis of Nano-Structured Gratings for Conversion Efficiency Improvement in GaAs Solar Cells

Efficiency enhancement in solar cells using photon down-conversion in Tb/Yb-doped tellurite glass

High‐low refractive index stacks as antireflection coatings on triple‐junction solar cells

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