Journal article

Ultrasonic spray deposition for production of organic solar cells.

Steirer K, Reese M, Rupert B, Kopidakis N, Olson D, Collins R, Ginley D ...see all

Solar Energy Materials & Solar Cells, vol. 93, issue 4 (2009) pp. 447-453

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Abstract

Abstract: Recent improvements of organic photovoltaic power conversion efficiencies have motivated development of scalable processing techniques. We compare chlorobenzene and p-xylene, as solvents with similar bulk properties, in a case study of ultrasonic spray depositions of bulk heterojunction layers in photovoltaic devices. Structure and morphology of spray-deposited films are investigated via small-angle X-ray diffraction and optical microscopy. Unique phases are observed in bulk heterostructure films sprayed from p-xylene. Films sprayed from chlorobenzene resulted in higher device efficiencies than p-xylene due to large differences in film morphologies. Carrier loss mechanisms are also investigated. Post-production annealing increases power conversion efficiency to 3.2% when chlorobenzene is used. [Copyright &y& Elsevier]

Author-supplied keywords

  • HETEROJUNCTIONS
  • MICROSCOPY
  • ORGANIC electronics
  • PRODUCTION engineering
  • SOLAR cells
  • SPRAYING
  • ULTRASONIC waves
  • X-rays -- Diffraction
  • XYLENE

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Authors

  • K Xerxes Steirer

  • Matthew O Reese

  • Benjamin L Rupert

  • Nikos Kopidakis

  • Dana C Olson

  • Reuben T Collins

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