Enhanced output from biohybrid photoelectrochemical transparent tandem cells integrating photosynthetic proteins genetically modified for expanded solar energy harvesting

Sai Kishore Ravi, Zhimeng Yu, David J. K. Swainsbury, Jianyong Ouyang, Michael R. Jones, Swee Ching Tan

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49 Citations (Scopus)

Abstract

A transparent biohybrid photoelectrochemical tandem cell is developed by employing optically-complementary variants of a photosynthetic protein in a stacked tandem architecture that utilizes a conductive polymer, poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS), as a transparent counter electrode. The tandem design demonstrates the photocurrent enhancement by complementary absorption of two naturally-occurring red and green versions of a bacterial Reaction center/Light Harvesting protein (RC-LH1) that vary in the type of light harvesting carotenoid feeding the central reaction center module with excited state energy. The use of PEDOT:PSS electrode results in a 12-fold improvement in photocurrent compared to that achievable with Platinum.
Original languageEnglish
Article number1601821
JournalAdvanced Energy Materials
Volume7
Issue number7
Early online date14 Dec 2016
DOIs
Publication statusPublished - 5 Apr 2017

Keywords

  • biophotovoltaics
  • genetic modification
  • PEDOT:PSS
  • photosynthetic proteins
  • transparent tandem solar cells

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