Optical Simulation of Light Management in CIGS Thin-Film Solar Cells Using Finite Element Method

Bednar, N.; Severino, N.; Adamovic, N.

doi:10.3390/app5041735

Cited by 20 publications

(6 citation statements)

References 26 publications

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“…where u is angular frequency which is equal to 2p/l and ε } is the imaginary component of complex permittivity of the material (Bednar et al, 2015).…”

Section: Star+methodsmentioning

confidence: 99%

Thin silicon via crack-assisted layer exfoliation for photoelectrochemical water splitting

et al. 2021

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“…where u is angular frequency which is equal to 2p/l and ε } is the imaginary component of complex permittivity of the material (Bednar et al, 2015).…”

Section: Star+methodsmentioning

confidence: 99%

Thin silicon via crack-assisted layer exfoliation for photoelectrochemical water splitting

et al. 2021

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“…[ 32 ] There are few reports on theoretical simulations and experimental investigations of light‐trapping strategies in TFSCs to increase light absorption. Bednar et al [ 33 ] performed simulations of CIGS collar cells using COMSOL Multiphysics software, wherein Mo bottom electrode and the other layers are conformally textured with triangular and convex features that led to a total reduction in reflectance in solar cells. Andreani et al [ 34 ] and Amiri et al [ 35 ] investigated the effects of texturing on the performance of CIGS solar cells using ATLAS of SILVACO by texturing transparent oxide layers ITO, ZnO, respectively, in CIGS solar cell.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Diffuse Reflectance of Photons in Molybdenum Back Electrode Films Achieved via Surface Texturing for Thin Film Solar Cells

Moosi Govindharajulu,

Rajendran,

Piraviperumal

2023

Physica Rapid Research Ltrs

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Molybdenum (Mo) thin film is widely used as the bottom electrode in substrate‐configured thin film solar cells due to its high conductivity and reflectivity. Mo grown onto microtextured substrates increases the diffuse reflection of incident photons via scattering/multiple reflections on the corner/edges, in addition to the contribution from increased surface area. Herein, bilayer Mo is grown using direct current magnetron sputtering onto plain and textured substrates. To texture the glass substrate surface, a periodic array of cross‐linked photoresist structures (SU‐8 2000.5 & SU‐8 2005) is introduced via UV‐lithography process. Characterizations are done using X‐ray diffractometer, optical microscope, scanning electron microscope, and optical profilometer. Angle‐dependent specular reflectance, diffuse reflectance, and electrical measurements done on Mo grown on plain and textured substrates lead to a comprehensive understanding of the advantages of growing Mo films on textured substrates. The electrical resistivity of Mo grown on plain and textured substrates is of the same order, measuring 3.09 × 10−5 Ω cm, 3.25 × 10−5 Ω cm, and 3.87 × 10−5 Ω cm, respectively. A high‐diffuse reflectance of 62.7% is obtained for SU‐8 2005 textured Mo films. Investigations using COMSOL simulations support the optical reflectance analysis.

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“…Light absorption efficiency of planar thin-film solar cells can be improved by use of surface-textured structures, of which absorption characteristics cannot be calculated based on the above-mentioned analytical methods applied to planar structures. In this case, the numerical methods of the rigorous coupled wave analysis (RCWA) [16], the finite-difference time-domain (FDTD) [17,18], and the finite element method (FEM) [19][20][21] should be used, where wave equations are directly solved in a small mesh or grid for optical modeling. Because these numerical methods provide only coherent simulation results, an additional averaging procedure such as the so-called "spectral averaging method" (SAM) [9], the first-principle calculation [22], and "one-pass coherent calculation" [23] is required to include the incoherent characteristics of light propagation.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Incoherent Encapsulation Layer and Oblique Sunlight Incidence on the Optical and Current-Voltage Characteristics of Surface-Textured Cu(In,Ga)Se2 Solar Cells Based on the Angle-Dependent Equispaced Thickness Averaging Method

Lee

Kim

et al. 2021

Applied Sciences

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In general, the optical and electrical characteristics of Cu(In,Ga)Se2 (CIGS) solar cells have been studied under the condition that sunlight is normally incident from the air to the CIGS solar cell having no thick front encapsulation layers. To obtain the calculation results in a realistic module application, we calculate the optical and current–voltage (J–V) characteristics of surface-textured CIGS solar cells by simultaneously considering the thick front encapsulation layers and oblique sunlight incidence. Using the proposed angle-dependent equispaced thickness averaging method (ADETAM), we incoherently model two successive front encapsulation layers of a cover glass layer and an ethylene vinyl acetate (EVA) layer, whose respective thicknesses are greater than the coherence length of sunlight (~0.6 μm). The angular dependences of reflectance spectrum and J–V curves are calculated and compared in a surface-textured CIGS solar cell with and without the inclusion of the two front encapsulation layers. We show that the optical absorption improvement of the surface-textured CIGS solar cell over the planar CIGS solar cell can be over-predicted when the thick front encapsulation layers are not considered in the optical modeling.

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Optical Simulation of Light Management in CIGS Thin-Film Solar Cells Using Finite Element Method

Cited by 20 publications

References 26 publications

Thin silicon via crack-assisted layer exfoliation for photoelectrochemical water splitting

Thin silicon via crack-assisted layer exfoliation for photoelectrochemical water splitting

Enhanced Diffuse Reflectance of Photons in Molybdenum Back Electrode Films Achieved via Surface Texturing for Thin Film Solar Cells

Effect of the Incoherent Encapsulation Layer and Oblique Sunlight Incidence on the Optical and Current-Voltage Characteristics of Surface-Textured Cu(In,Ga)Se2 Solar Cells Based on the Angle-Dependent Equispaced Thickness Averaging Method

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