Efficient Light Management by Textured Nanoimprinted Layers for Perovskite Solar Cells

Jost, Matthias; Albrecht, Steve; Kegelmann, Lukas; Wolff, Christian; Lang, Felix; Lipovšek, Benjamin; Krč, Janez; Korte, Lars; Neher, Dieter; Rech, Bernd; Topič, Marko

doi:10.1021/acsphotonics.7b00138

Cited by 111 publications

(68 citation statements)

References 36 publications

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“…It can be estimated that 97% of the incident light rays that fall on a given cylinder are directed to another cylinder upon the first bounce on the bottom of the optical medium. In contrast to other recent approaches to enhance light absorption in perovskite solar cells, where an angular randomization leading to an ergodic optical geometry was not confirmed, we demonstrate that the short circuit current enhancement we achieved is very close to the maximum possible and it can be qualitatively and quantitatively predicted by a model that combines ray and wave optics which establishes the ergodicity of the h‐CPP structure considered.…”

Section: Introductioncontrasting

confidence: 79%

Ergodic Light Propagation in a Half‐Cylinder Photonic Plate for Optimal Absorption in Perovskite Solar Cells

Martínez‐Denegri

Colodrero

Liu

et al. 2019

Advanced Optical Materials

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In an optical medium slab, a randomization of the interfaces will lead to an ergodic light propagation, implying a kind of light trapping that sets an upper limit for a broadband absorption enhancement factor. However, in thin film solar cells where such light trapping is most needed, it is not straightforward how the implementation of a surface randomization should be done. In addition, such randomization may also severely limit the electronic device performance. Here, a cylindrical periodic corrugation, which is named half‐cylinder photonic plate, is introduced at the light entering interface which leads to an ergodic light propagation. Advantage of such ergodicity is taken to enhance light absorption in a perovskite cell, physically separated by a planar glass substrate from such half‐cylinder photonic plate. Theoretically and experimentally it is demonstrated that the enhancement light absorption factor measured is close to the maximum possible for light trapping schemes using one interface periodic corrugations. This upper limit results from the ergodic light propagation that is achieved with a half‐cylinder photonic plate made from an optical transparent material with a low refractive index that minimizes light rejection by reflectivity.

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Section: Introductioncontrasting

confidence: 79%

Ergodic Light Propagation in a Half‐Cylinder Photonic Plate for Optimal Absorption in Perovskite Solar Cells

Martínez‐Denegri

Colodrero

Liu

et al. 2019

Advanced Optical Materials

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“…When front side texturing is practically not feasible directly at the wafer surface, a microtextured foil (texture replicate on a plastic foil) can be applied on the front electrode of the solar cell during its characterization . This technique was already used several times for perovskite‐based single and tandem cells . An example of the effect of such a microtextured antireflection foil can be seen in Figure d.…”

Section: Performance Optimizationmentioning

confidence: 99%

Perovskite/Silicon Tandem Solar Cells: Marriage of Convenience or True Love Story? – An Overview

Werner

Niesen

Ballif

2017

Adv Materials Inter

372

316

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Perovskite/silicon tandem solar cells have reached efficiencies above 25% in just about three years of development, mostly driven by the rapid progress made in the perovskite solar cell research field. This review aims to give an overview of the achievements made in this timeframe toward the goal of developing high‐efficiency perovskite/silicon tandem cells with sufficiently large area and long lifetime to be commercially interesting. The developments that led to the recent progress in tandem cell efficiency, as well as the factors currently still limiting their performance, including parasitic absorption, reflection losses, and the nonideal perovskite absorber layer bandgap, are discussed. Based on this discussion, guidelines for future developments are given. In addition, crucial aspects to enable the commercialization of perovskite/silicon tandem solar cells are reviewed, such as device stability and upscaling. Finally, economic considerations show how the number of steps and/or the costs associated to these steps for realizing the perovskite cell must be kept to a minimum to keep up with progress in the field of silicon photovoltaics.

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“…The prospect of scalable high‐efficient perovskite‐Si and perovskite‐CIGS multijunction solar modules holds substantial potential for a disruptive change in the PV market . Intrinsic electrical characteristics, optics of the layer stack, effectiveness of deposition techniques, all have significant impact on the overall performance of the multijunction devices . Recently, an all‐thin‐film monolithic perovskite‐CIGS multijunction solar cell with PCE of 21.6% on 0.8 cm 2 was demonstrated .…”

Section: Introductionmentioning

confidence: 99%

“…24,25 Intrinsic electrical characteristics, optics of the layer stack, effectiveness of deposition techniques, all have significant impact on the overall performance of the multijunction devices. [26][27][28][29] Recently, an all-thin-film monolithic perovskite-CIGS multijunction solar cell with PCE of 21.6% on 0.8 cm 2 was demonstrated. 30 Such advances demonstrate the attractive prospects of all-thin-film perovskite-CIGS multijunction solar cells.…”

mentioning

confidence: 99%

Toward scalable perovskite‐based multijunction solar modules

Jaysankar

Paetel

Ahlswede

et al. 2019

Progress in Photovoltaics

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Perovskite‐based multijunction solar cells can potentially overcome the power conversion efficiency (PCE) limits of established solar cell technologies. The technology combines high‐efficiency perovskite top solar cells with crystalline silicon (c‐Si) and copper indium gallium diselenide (CIGS) single‐junction solar cells enabling a more efficient harnessing of solar energy. In this work, we present high‐efficiency and scalable perovskite‐CIGS and perovskite‐Si multijunction solar modules in a four‐terminal configuration. We design the multijunction solar modules for minimal optical losses through careful optical engineering. In addition to optimized light coupling, the solar modules are fabricated in a scalable device design. Starting from lab‐scale cells of 0.13 cm2, we scale up the multijunction devices by two orders of magnitude to 16 cm2 and investigate the various losses affecting the PCE of large‐area multijunction solar modules, thus providing valuable insights into scalability of the technology. The champion perovskite‐CIGS and perovskite‐Si multijunction solar modules exhibit higher PCE than the stand‐alone devices on sizes up 16 cm2, paving the way for high‐effiency perovskite‐based multijunction photovoltaics. This work brings to forth relevant upscaling aspects of perovskite‐based multijunction solar cell technology, which is a key milestone in the road to commercial feasibility of the perovskite‐based multijunction solar cell technology.

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Efficient Light Management by Textured Nanoimprinted Layers for Perovskite Solar Cells

Abstract: Inorganic-organic perovskites like methylammonium-lead-iodide have proven to be an effective class of materials for fabricating efficient solar cells. To improve their performance, light management techniques using textured surfaces, similar to those used in

Cited by 111 publications

References 36 publications

Ergodic Light Propagation in a Half‐Cylinder Photonic Plate for Optimal Absorption in Perovskite Solar Cells

Ergodic Light Propagation in a Half‐Cylinder Photonic Plate for Optimal Absorption in Perovskite Solar Cells

Perovskite/Silicon Tandem Solar Cells: Marriage of Convenience or True Love Story? – An Overview

Toward scalable perovskite‐based multijunction solar modules

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