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Related Experiment Video

Updated: Jun 11, 2026

In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation
06:49

In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation

Published on: March 2, 2021

A Scalable Polymer Multilayer Film Strategy for Colored Photovoltaics with Passive Thermal Management and Data-Driven

Zhi-Kun Hu1, Fang-Xin Zhang1, Ming Li2

  • 1Institute of Advanced Technology, University of Science and Technology of China, 5089 Wangjiang West Road, Hefei City 230000, China.

ACS Applied Materials & Interfaces
|June 10, 2026
PubMed
Summary

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We developed scalable colored polymer multilayer films for building-integrated photovoltaics (BIPVs). This strategy enhances aesthetics and thermal management while maintaining high power conversion efficiency (PCE), overcoming key limitations in sustainable urban energy.

Area of Science:

  • Materials Science
  • Renewable Energy
  • Optoelectronics

Background:

  • Building-integrated photovoltaics (BIPVs) offer sustainable urban energy solutions but face challenges balancing aesthetics, power output, thermal management, and cost.
  • Conventional coloring methods reduce photovoltaic efficiency and durability, while nanostructure-based approaches lack scalability.

Purpose of the Study:

  • To introduce a scalable colored photovoltaic strategy using polymer multilayer films (PMF-C) for BIPVs.
  • To achieve vivid structural coloration, improved thermal regulation, and high power conversion efficiency (PCE).

Main Methods:

  • Developed color-selective polymer multilayer films (PMF-C) from a PEN/PMMA platform using continuous coextrusion.
  • Integrated PMF-C with infrared-emissive EVA encapsulation for passive thermal management.
Keywords:
colored photovoltaicslayer-multiplying coextrusion processmachine learningoptical-thermal-electrical coupled analysis modelpassive thermal managementpolymer multilayer optical film

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Last Updated: Jun 11, 2026

In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation
06:49

In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation

Published on: March 2, 2021

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  • Established a data-driven opto-thermo-electrical framework for predictive design and analysis.
  • Utilized machine learning for an inverse-design workflow to map colors to structural parameters.

    • Main Results:

    • PMF-C provides vivid structural coloration via a selective high-reflection stopband, maintaining high transmission in the photovoltaic spectrum.
    • The integrated system reduced operating temperature by up to ~8.65 °C while retaining ~74% of baseline PCE.
    • Predictive framework identified optimal designs, with an idealized uniform-thickness PEN/PMMA design retaining 86.9% PCE and reducing temperature by 5.17 K.

    Conclusions:

    • The developed PMF-C platform offers a scalable solution for colored BIPVs, addressing trade-offs between appearance, efficiency, and thermal performance.
    • The predictive design framework enables efficient engineering of BIPVs with tailored optical, thermal, and electrical properties.
    • This work paves the way for aesthetically pleasing and high-performance BIPVs in sustainable urban environments.