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A Biogenic Photovoltaic Material.

Sarvesh Kumar Srivastava1, Przemyslaw Piwek1, Sonal R Ayakar1

  • 1Department of Chemical and Biological Engineering, The University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z3, Canada.

Small (Weinheim an Der Bergstrasse, Germany)
|June 2, 2018
PubMed
Summary

Researchers engineered E. coli to produce lycopene for photovoltaic applications. This bio-based material, combined with TiO2 nanoparticles, demonstrated excellent performance in dye-sensitized solar cells, paving the way for green electronics.

Keywords:
biogenic materialsbiohybrid materialsbiophotovoltaicssupramolecular assemblysynthetic biology

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Area of Science:

  • Biomaterials Engineering
  • Photovoltaics
  • Synthetic Biology

Background:

  • Developing sustainable and cost-effective materials for solar energy conversion is crucial.
  • Genetically engineered microorganisms offer a novel platform for producing functional biogenic materials.
  • Lycopene, a photoactive carotenoid, has potential applications in optoelectronics.

Purpose of the Study:

  • To demonstrate the fabrication of genetically customizable biogenic materials for photovoltaic applications.
  • To engineer E. coli for overproduction of the photoactive pigment lycopene.
  • To integrate these engineered cells into a functional dye-sensitized solar cell.

Main Methods:

  • Genetic engineering of E. coli to express the plant carotenoid biosynthetic pathway.
  • Overproduction of lycopene by the engineered bacterial strain.
  • Coating of pigment-producing cells with titanium dioxide (TiO2) nanoparticles using a tryptophan-mediated interface.
  • Fabrication of a dye-sensitized solar cell using the resulting biogenic material (cells@TiO2) as an anode.

Main Results:

  • Successfully engineered E. coli to overproduce lycopene.
  • Developed a method to coat the lycopene-producing cells with TiO2 nanoparticles.
  • The biogenic material (cells@TiO2) exhibited excellent photovoltaic response when used as an anode in a dye-sensitized solar cell.
  • Demonstrated proof-of-concept for bio-photovoltaic (bio-PV) material fabrication.

Conclusions:

  • Genetically engineered microorganisms can be utilized to create customizable biogenic materials for solar energy applications.
  • The developed bio-PV material shows promise for green, inexpensive, and easily manufactured organic optoelectronics.
  • This work establishes a foundation for future advancements in bio-based photovoltaic devices.