Ultrasonic spray deposition for production of organic solar cells

K. Xerxes Steirer*, Matthew O. Reese, Benjamin L. Rupert, Nikos Kopidakis, Dana C. Olson, Reuben T. Collins, David S. Ginley

*Corresponding author for this work

Research output: Contribution to journalArticle

136 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)447-453
Number of pages7
JournalSolar Energy Materials and Solar Cells
Volume93
Issue number4
DOIs
Publication statusPublished - Apr 2009
Externally publishedYes

Keywords

  • Bulk heterojunction
  • Deposition
  • Organic
  • Photovoltaic
  • Process
  • Spray

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  • Cite this

    Steirer, K. X., Reese, M. O., Rupert, B. L., Kopidakis, N., Olson, D. C., Collins, R. T., & Ginley, D. S. (2009). Ultrasonic spray deposition for production of organic solar cells. Solar Energy Materials and Solar Cells, 93(4), 447-453. https://doi.org/10.1016/j.solmat.2008.10.026