On Accurate Simulations of Thin-Film Solar Cells With a Thick Glass Superstrate

Jäger, Klaus; Schmidt, Martin Hammer; Köppel, Grit; Burger, Sven; Becker, Christiane

doi:10.1364/pv.2016.pm3b.5

Cited by 5 publications

(3 citation statements)

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“…For all architectures we use a period of P = 500 nm, which is very well suited for solar cells. 22,23,40 As we have seen in Section 2, spin-coating allows to grow perovskite layers on nanotextured substrates. These layers are almost flat on top and hence resemble the architecture with the rear-side texture shown in Fig.…”

Section: Simulated Tandem Cell Architecturesmentioning

confidence: 88%

“…[14][15][16][17][18][19][20][21] For nanostructures, which texture the electrically active layers of the solar cell, it is mandatory that they have no detrimental effect on the electric solar cell performance. Therefore, we decided to focus on hexagonal sinusoidal nanotextures, 22,23 which allow to combine a strong anti-reflective effect with good electrical performance, as we demonstrated for liquidphase crystallized silicon thin-film solar cells. 24,25 In this work, we investigate, how sinusoidal nanotextures affect the optical performance of perovskitesilicon tandem solar cells.…”

Section: Introductionmentioning

confidence: 99%

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Nanophotonic light management for perovskite–silicon tandem solar cells

Chen

Manley

2018

J. Photon. Energy

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Perovskite-silicon tandem solar cells are currently one of the most investigated concepts to overcome the theoretical limit for the power conversion efficiency of silicon solar cells. For monolithic tandem solar cells the available light must be distributed equally between the two subcells, which is known as current matching. For a planar device design, a global optimization of the layer thicknesses in the perovskite top cell allows current matching to be reached and reflective losses of the solar cell to be minimized at the same time. However, even after this optimization reflection and parasitic absorption losses occur, which add up to 7 mA/cm 2 .In this contribution we use numerical simulations to study, how well hexagonal sinusoidal nanotextures in the perovskite top-cell can reduce the reflective losses of the combined tandem device. We investigate three configurations. The current density utilization can be increased from 91% for the optimized planar reference to 98% for the best nanotextured device (period 500 nm and peak-to-valley height 500 nm), where 100% refers to the Tiedje-Yablonovitch limit. In a first attempt to experimentally realize such nanophotonically structured perovskite solar cells for monolithic tandems, we investigate the morphology of perovskite layers, which are deposited onto sinusoidally structured substrates.

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Section: Simulated Tandem Cell Architecturesmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Nanophotonic light management for perovskite–silicon tandem solar cells

Chen

Manley

2018

J. Photon. Energy

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“…4 We used hexagonal sinusoidal nanotextures that have proven to strongly reduce reflection at silicon-oxide silicon interfaces. [5][6][7][8] Send correspondence to K.J. : E-mail: klaus.jaeger@helmholtz-berlin.de * D. Chen We performed the optical simulations with the finite element method (FEM).…”

Section: Introductionmentioning

confidence: 99%

Antireflective nanotextures for monolithic perovskite-silicon tandem solar cells

Jäger

Manley

Chen

et al. 2018

Photonics for Solar Energy Systems VII

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and is made available as an electronic preprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. ABSTRACTRecently, we studied the effect of hexagonal sinusoidal textures on the reflective properties of perovskite-silicon tandem solar cells using the finite element method (FEM). We saw that such nanotextures, applied to the perovskite top cell, can strongly increase the current density utilization from 91% for the optimized planar reference to 98% for the best nanotextured device (period 500 nm and peak-to-valley height 500 nm), where 100% refers to the Tiedje-Yablonovitch limit. * In this manuscript we elaborate on some numerical details of that work: we validate an assumption based on the Tiedje-Yablonovitch limit, we present a convergence study for simulations with the finite-element method, and we compare different configurations for sinusoidal nanotextures.

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