Fabrication, optical modeling, and color characterization of semitransparent bulk-heterojunction organic solar cells in an inverted structure

T. Ameri, G. Dennler, C. Waldauf, H. Azimi, A. Seemann, K. Forberich, J. Hauch, M. Scharber, K. Hingerl, C.J. Brabec

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Semitransparent inverted organic photodiodes are fabricated with a Baytron PH500 ethylene - glycol layer/silver grid as the top electrode. Reasonable performances are obtained under both rear and front-side illumination and efficiencies up to 2% are achieved. Some light is shed on visual prospects through optical simulations for a semitransparent device of poly(3hexylthiophene) (P3HT) and the C70 derivative 1-(3-methoxycarbonyl) propyl1-phenyl[6,6]C71 (PC70BM) in the inverted structure. These calculations allow the maximum efficiency achievable to be predicted for semitransparent cells based on P3HT:PC70BM versus the transparency perception for a human eye. The simulations suggest that low-bandgap materials such as poly[2,6-(4,4bis-(2- ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b′]dithiophene)-alt-4,7-(2,1, 3benzothiadiazole)] (PCPDTBT) have a better potential for semitransparent devices. In addition, the color range recognized by the human eye is predicted by the optical simulation for some semitransparent devices including different active layers. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Original languageEnglish
Pages (from-to)1592-1598
Number of pages7
JournalAdvanced Functional Materials
Volume20
Issue number10
DOIs
Publication statusPublished - 2010

Keywords / Materials (for Non-textual outputs)

  • Active Layer
  • Bandgap materials
  • Benzothiadiazoles
  • Bulk heterojunction
  • Color characterization
  • Color ranges
  • Human eye
  • Inverted structure
  • Maximum Efficiency
  • Optical modeling
  • Optical simulation
  • Organic photodiodes
  • Organic solar cell
  • Poly-3-hexylthiophene
  • Transparency perception
  • Ethylene
  • Glycols
  • Heterojunctions
  • Solar cells

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