Polymer Encapsulants Incorporating Light‐Guiding Architectures to Increase Optical Energy Conversion in Solar Cells

  title={Polymer Encapsulants Incorporating Light‐Guiding Architectures to Increase Optical Energy Conversion in Solar Cells},
  author={Saeid Biria and Fu-Hao Chen and Shreyas Pathreeker and Ian Dean Hosein},
  journal={Advanced Materials},
The fabrication of a new type of solar cell encapsulation architecture comprising a periodic array of step‐index waveguides is reported. The materials are fabricated through patterning with light in a photoreactive binary blend of crosslinking acrylate and urethane, wherein phase separation induces the spontaneous, directed formation of broadband, cylindrical waveguides. This microstructured material efficiently collects and transmits optical energy over a wide range of entry angles. Silicon… 
12 Citations

Enhanced Wide‐Angle Energy Conversion Using Structure‐Tunable Waveguide Arrays as Encapsulation Materials for Silicon Solar Cells

The authors report on the enhancement in optical energy conversion in silicon solar cells encapsulated with a polymer film comprising of waveguide array structures. The structures are fabricated

Microfiber Optic Arrays as Top Coatings for Front Contact Solar Cells Towards Mitigation of Shading Loss.

A new approach for enhanced light collection and conversion using a scalable, straightforward light-based additive manufacturing process that increases external quantum efficiency and increases in short circuit current density.

Direct Light‐Writing of Nanoparticle‐Based Metallo‐Dielectric Optical Waveguide Arrays Over Silicon Solar Cells for Wide‐Angle Light Collecting Modules

Here presented are the properties and performance of a new metallo‐dielectric waveguide array structure as the encapsulation material for silicon solar cells. The arrays are produced through

Multidirectional Polymer Waveguide Lattices for Enhanced Ultrawide-Angle Light Capture in Silicon Solar Cells

We report the synthesis and characterization of a polymer thin-film structure consisting of two intersecting broadband optical waveguide lattices, and its performance in wide-angle optical energy

Additive manufacturing of high aspect-ratio structures with self-focusing photopolymerization

1 Photocrosslinkable polymers have been exploited to attain impressive advantages in printing freestanding, micrometer-scale, 2 mechanically compliant features. However, more integrated understanding

Simulations of Structure and Morphology in Photoreactive Polymer Blends under Multibeam Irradiation

We present a theoretical study of the organization of photoreactive polymer blends under irradiation by multiple arrays of intersecting optical beams. In a simulated medium possessing an integrated

Waveguide-Imprinted Slim Polymer Films: Beam Steering Coatings for Solar Cells

We report that transparent polymer coatings imprinted with tilted planar waveguides significantly reduce optical loss caused by the scattering of incident light by front metal contacts of solar cel...

Observation of intensity dependent phase-separation in photoreactive monomer-nanoparticle formulations under non-uniform visible light irradiation.

Observations of photopolymerization driven phase-separation in a mixture of a photo-reactive monomer and inorganic nanoparticles can potentially enable a single-step route to develop polymer-inorganic composite materials with tunable morphologies.

Light-Directed Organization of Polymer Materials from Photoreactive Formulations

  • I. Hosein
  • Materials Science
    Chemistry of Materials
  • 2020
This perspective presents a recently developed approach to organize polymer and polymer composite materials through a new form of light-directed organization of photoreactive polymeric media. Under...

Roadmap on holography

John T Sheridan1,∗, Raymond K Kostuk2, Antonio Fimia Gil3, Y Wang4, W Lu4, H Zhong4, Y Tomita5, C Neipp6, J Francés6, S Gallego6, I Pascual6, V Marinova7,8, S-H Lin7, K-Y Hsu7, F Bruder9, S



Increasing light capture in silicon solar cells with encapsulants incorporating air prisms to reduce metallic contact losses.

This work demonstrates exactly how a periodic air prism architecture increases light collection, and how it may be designed to maximize light collection over the widest range of incident angles.

Challenges and prospects of nanopillar-based solar cells

Materials and device architecture innovations are essential for further enhancing the performance of solar cells while potentially enabling their large-scale integration as a viable source of

All‐Angle Invisibility Cloaking of Contact Fingers on Solar Cells by Refractive Free‐Form Surfaces

This work demonstrates a performance improvement of state‐of‐the‐art silicon solar cells by cloaking their metal contact fingers. The cloaking free‐form surfaces are fabricated on silicon

Light-induced self-written three-dimensional optical waveguide

Three-dimensional (3D) optical waveguides were fabricated in a photopolymerizing resin mixture solution by using a multimode optical fiber, without any moving parts. The core portion has formed by

Tunable Nonlinear Optical Pattern Formation and Microstructure in Cross-Linking Acrylate Systems during Free-Radical Polymerization

We report cross-link-tunable, nonlinear optical pattern formation of transmitted light in a photopolymer undergoing free-radical polymerization. Photopolymerization induces microscale filamentation

Waveguide Encoded Lattices (WELs): Slim Polymer Films with Panoramic Fields of View (FOV) and Multiple Imaging Functionality

When encoded with a 3D network of interconnected and pentadirectional waveguides, an otherwise passive polymer film transforms into an intelligent optical element—a waveguide encoded lattice

Control of Morphology in Polymer Blends through Light Self-Trapping: An in Situ Study of Structure Evolution, Reaction Kinetics, and Phase Separation

We report on how polymer morphology is controlled through the self-trapping of transmitted optical beams in photoreactive polymer blends. Self-trapped optical beams, characterized by divergence-free

Diffractive optical elements utilized for efficiency enhancement of photovoltaic modules.

Calculations of the planar electromagnetic wave diffraction and propagation were performed using the rigorous coupled wave analysis technique providing quantitative estimations for the potential efficiency enhancement of photovoltaic modules.

Self-focusing and self-trapping of optical beams upon photopolymerization.

It is demonstrated theoretically and experimentally that optical beams are self-focused and self-trapped upon initiating photopolymerization and the resulting nonlinear wave equation is shown to be nonlocal in time and displays self-Trapped solutions only for sufficiently low average optical intensities.