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Dye-sensitized Solar Cells: Principle, Fabrication and Performance
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A Paper-Based Biological Solar Cell.

Lin Liu1, Seokheun Choi1

  • 1Bioelectronics & Microsystems Laboratory, Department of Electrical & Computer Engineering, State University of New York at Binghamton, Binghamton, NY, USA.

SLAS Technology
|September 14, 2019
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel paper-based biological solar cell using photosynthetic bacteria. This sustainable power source offers long-lasting electricity for disposable diagnostic devices in resource-limited settings.

Keywords:
microbial fuel cellspaper-based biological solar cellspaper-based point-of-care diagnostic devicesphotosynthetic bacteriasolar energy harvesting

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Paper-Based Preconcentration and Isolation of Microvesicles and Exosomes
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Area of Science:

  • Biotechnology
  • Materials Science
  • Renewable Energy

Background:

  • Paper-based microfluidics and electronics offer low-cost, disposable solutions for point-of-care diagnostics.
  • Sustainable power sources are critical for self-contained paper-based systems, especially in resource-constrained environments.
  • Existing paper-based microbial fuel cells have limited power duration, hindering practical applications.

Purpose of the Study:

  • To develop a simple, long-lasting, and self-sustainable power source for paper-based diagnostic devices.
  • To utilize photosynthetic bacteria as biocatalysts for continuous electricity generation from light energy.

Main Methods:

  • Fabrication of a paper-based biological solar cell using photosynthetic bacteria as biocatalysts.
  • Integration of a porous, conductive anode and a solid-state cathode on paper substrates.
  • Construction of a 3-D volumetric chamber using stacked papers to house the bacteria.

Main Results:

  • The paper-based biological solar cell achieved maximum current and power densities of 65 µA/cm² and 10.7 µW/cm², respectively.
  • Stable and long-lasting electricity generation exceeding 5 hours was demonstrated using photosynthetic bacteria in a 3-D configuration.
  • Significantly improved power duration compared to conventional micro-sized biological solar cells and heterotrophic cultures on 2-D paper.

Conclusions:

  • The developed paper-based biological solar cell offers a promising, sustainable, and long-lasting power solution for disposable point-of-care diagnostic applications.
  • Photosynthetic bacteria integrated into a 3-D paper structure provide a viable method for continuous, self-sustained electricity generation.
  • This technology has the potential to enhance the accessibility and effectiveness of diagnostics in remote and resource-limited settings.