Quaternary Organic Solar Cells Enhanced by Cocrystalline Squaraines with Power Conversion Efficiencies >10%

Tenghooi Goh, Jing Shun Huang, Kevin G. Yager, Matthew Y. Sfeir, Chang Yong Nam, Xiao Tong, Louise M. Guard, Patrick R. Melvin, Francisco Antonio, Benjamin G. Bartolome, Minjoo L. Lee, Nilay Hazari, Andre Taylor

Research output: Contribution to journalArticle

Abstract

The incorporation of multiple donors into the bulk-heterojunction layer of organic polymer solar cells (PSCs) has been demonstrated as a practical and elegant strategy to improve photovoltaics performance. However, it is challenging to successfully design and blend multiple donors, while minimizing unfavorable interactions (e.g., morphological traps, recombination centers, etc.). Here, a new F�rster resonance energy transfer-based design is shown utilizing the synergistic nature of three light active donors (two small molecules and a high-performance donor–acceptor polymer) with a fullerene acceptor to create highly efficient quaternary PSCs with power conversion efficiencies (PCEs) of up to 10.7%. Within this quaternary architecture, it is revealed that the addition of small molecules in low concentrations broadens the absorption bandwidth, induces cocrystalline molecular conformations, and promotes rapid (picosecond) energy transfer processes. These results provide guidance for the design of multiple-donor systems using simple processing techniques to realize single-junction PSC designs with unprecedented PCEs.

Original languageEnglish (US)
Article number1600660
JournalAdvanced Energy Materials
Volume6
Issue number21
DOIs
StatePublished - Nov 9 2016

Fingerprint

Conversion efficiency
Energy transfer
Fullerenes
Molecules
Organic polymers
Conformations
Heterojunctions
Polymers
Bandwidth
Organic solar cells
Processing
Polymer solar cells

Keywords

  • morphology enhancement
  • organic crystallization
  • polymer solar cells
  • resonance energy transfer
  • squaraine dye

ASJC Scopus subject areas

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

Cite this

Goh, T., Huang, J. S., Yager, K. G., Sfeir, M. Y., Nam, C. Y., Tong, X., ... Taylor, A. (2016). Quaternary Organic Solar Cells Enhanced by Cocrystalline Squaraines with Power Conversion Efficiencies >10%. Advanced Energy Materials, 6(21), [1600660]. https://doi.org/10.1002/aenm.201600660

Quaternary Organic Solar Cells Enhanced by Cocrystalline Squaraines with Power Conversion Efficiencies >10%. / Goh, Tenghooi; Huang, Jing Shun; Yager, Kevin G.; Sfeir, Matthew Y.; Nam, Chang Yong; Tong, Xiao; Guard, Louise M.; Melvin, Patrick R.; Antonio, Francisco; Bartolome, Benjamin G.; Lee, Minjoo L.; Hazari, Nilay; Taylor, Andre.

In: Advanced Energy Materials, Vol. 6, No. 21, 1600660, 09.11.2016.

Research output: Contribution to journalArticle

Goh, T, Huang, JS, Yager, KG, Sfeir, MY, Nam, CY, Tong, X, Guard, LM, Melvin, PR, Antonio, F, Bartolome, BG, Lee, ML, Hazari, N & Taylor, A 2016, 'Quaternary Organic Solar Cells Enhanced by Cocrystalline Squaraines with Power Conversion Efficiencies >10%', Advanced Energy Materials, vol. 6, no. 21, 1600660. https://doi.org/10.1002/aenm.201600660
Goh, Tenghooi ; Huang, Jing Shun ; Yager, Kevin G. ; Sfeir, Matthew Y. ; Nam, Chang Yong ; Tong, Xiao ; Guard, Louise M. ; Melvin, Patrick R. ; Antonio, Francisco ; Bartolome, Benjamin G. ; Lee, Minjoo L. ; Hazari, Nilay ; Taylor, Andre. / Quaternary Organic Solar Cells Enhanced by Cocrystalline Squaraines with Power Conversion Efficiencies >10%. In: Advanced Energy Materials. 2016 ; Vol. 6, No. 21.
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