High-efficiency inverted polymer photovoltaics via spectrally tuned absorption enhancement

Stephen Loser, Brent Valle, Kyle A. Luck, Charles K. Song, Gabriel Ogien, Mark C. Hersam, Kenneth D. Singer, Tobin J. Marks

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)


(Chemical Equation Presented) The trade-off between light absorption and exciton diffusion length must be addressed before widespread deployment of organic photovoltaics can be realized. Optical transfer matrix modeling is used in inverted, high-efficiency organic photovoltaics, employing a poly[[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-bβ]dithiophene-2,6-diyl] [3-fluoro-2-[(2-ethyl hexyl)carbonyl]thieno[3,4-b]thiophenediyl]] (PTB7):[6,6]-phenyl C71butyric acid methyl-ester (PC71BM) active layer to spectrally sculpt absorption enhancement by tuning the layer thicknesses of both the photoactive layer and the ZnO interfacial layer (IFL).

Original languageEnglish
Article number1301938
JournalAdvanced Energy Materials
Issue number14
Publication statusPublished - Oct 1 2014


  • Coherent optical effects
  • Organic photovoltaics
  • Polymer solar cells
  • Spectral properties

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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