Light management in perovskite solar cells and organic LEDs with microlens arrays

Peer, Akshit; Biswas, Rana; Park, Joong-Mok; Shinar, Ruth; Shinar, J.

doi:10.1364/oe.25.010704

Cited by 78 publications

(56 citation statements)

References 23 publications

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“…Microlens arrays (MLAs), serving as crucial optical elements, are widely used in various micro‐optical systems, such as fiber coupling, artificial compound eyes, solar cells, biochemical observation, and detection, because of their small size, high integration, and excellent optical capability. However, the wide applications of MLAs are still restricted by some limitations.…”

Section: Introductionmentioning

confidence: 99%

Integration of Great Water Repellence and Imaging Performance on a Superhydrophobic PDMS Microlens Array by Femtosecond Laser Microfabrication

Yang

Chen

et al. 2018

Adv Eng Mater

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Microlens arrays (MLAs), as the important optical devices, are easily polluted by the water droplets or power-like-contaminates in the air. Endowing the artificial MLAs with anti-water and self-cleaning abilities remains great challenge. In this paper, the authors report a novel method for fabricating superhydrophobic polydimethylsiloxane (PDMS) MLAs by the combination of femtosecond laser wet etching and femtosecond laser direct writing methods. The resultant surface is composed of a convex MLA and the surrounding rough micro/nanoscale hierarchical structures. Water droplet on the surface of the as-prepared MLA shows a contact angle of 162 and can easily roll away when the substrate is slightly tilted 0.5 . In addition to their excellent imaging performance, such ultralow adhesive and ultrahigh superhydrophobicity also endows the as-prepared MLA with excellent anti-water ability as well as the self-cleaning function relative to the normal MLA. The authors believe that the anti-water and self-cleaning MLAs will potentially have many important applications in solar cells, medical endoscopes, and other optical systems that are often used in the humid environment or outdoors.

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Section: Introductionmentioning

confidence: 99%

Integration of Great Water Repellence and Imaging Performance on a Superhydrophobic PDMS Microlens Array by Femtosecond Laser Microfabrication

Yang

Chen

et al. 2018

Adv Eng Mater

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“…In this work we focused on a standard commercially available hexagonal array of O shaped domes, with period P = 7.38 mm and height h = 5.5 mm see Figure 1(c). These structures already show potential for increasing J sc in other solar cell technologies [24][25][26][27]. The LM foil is implemented on top of the encapsulation and is in simulations considered as a part of the encapsulation.…”

Section: Device Structure and Texturesmentioning

confidence: 99%

Modelling Supported Design of Light Management Structures in Ultra-Thin Cigs Photovoltaic Devices

2019

Informacije MIDEM

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Chalcopyrite solar cells exhibit one of the highest conversion efficiencies among thin-film solar cell technologies (> 23.3%), however a considerably thick absorber ≥1.8 µm is required for an efficient absorption of the long-wavelength light and collection of charge carriers. In order to minimize the material consumption and to accelerate the fabrication process, further thinning down of the absorber layer is important. Using a thin absorber layer results in a highly reduced photocurrent density and to compensate for it an effective light management needs to be introduced. Experimentally supported, advanced optical simulations in a PV module configuration, i.e. solar cell structure including the encapsulation and front glass are employed to design solutions to increase the short current density of devices with ultra-thin (500 nm) absorbers. In particular (i) highly reflective metal back reflector (BR), (ii) internal nano-textures and (iii) external textures by applying a light management (LM) foil are investigated by simulations. Experimental verification of simulation results is presented for the external texture case. In the scope of this contribution we show that any individual aforementioned approach is not sufficient to compensate for the short circuit current drop of the thin CIGS, but only a combination of highly reflective back contact and introduction of textures (internal or external) is able to compensate and also to exceed (by more than 5 % for internal texture) photocurrent density of a thick (1800 nm) CIGS absorber.

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“…Peer et al demonstrate the enhancement of absorption (or light emission) in solar cells (or organic light emitting diodes) enabled by light interaction with a periodically structured microlens array, which facilitates focusing of light on the nanoscale [3].…”

Section: Integrated Opticsmentioning

confidence: 99%

Focus issue introduction: synergy of structured light and structured materials

Omatsu¹,

Litchinitser²,

Brasselet³

et al. 2017

Opt. Express

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Structured light beams, such as optical vortices, vector beams, and non-diffracting beams, have been recently studied in a variety of fields, such as optical manipulations, optical telecommunications, nonlinear interactions, quantum physics, and 'super resolution' microscopy.. Their unique physical properties, such as annular intensity profile, helical wavefront and orbital angular momentum, give rise to a plethora of new, fundamental light-matter interactions and device applications. Recent progress in nanostructured materials, including metamaterials and metasurfaces, opened new opportunities for structured light generation on the microscale that exceed the capabilities of bulk-optics approaches such as computer generated holography and diffractive optics. Furthermore, structured optical fields may interact with matters on the subwavelength scale to yield new physical effects, such as spin-orbital momentum coupling. This special issue of Optics Express focuses on the state-of-the-art fundamental research and emerging technologies and applications enabled by the interplay of "structured light" and "structured materials".

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Light management in perovskite solar cells and organic LEDs with microlens arrays

Cited by 78 publications

References 23 publications

Integration of Great Water Repellence and Imaging Performance on a Superhydrophobic PDMS Microlens Array by Femtosecond Laser Microfabrication

Integration of Great Water Repellence and Imaging Performance on a Superhydrophobic PDMS Microlens Array by Femtosecond Laser Microfabrication

Modelling Supported Design of Light Management Structures in Ultra-Thin Cigs Photovoltaic Devices

Focus issue introduction: synergy of structured light and structured materials

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