4.8 Article

Self-Propagating Molecular Assemblies as Interlayers for Efficient Inverted Bulk-Heterojunction Solar Cells

Journal

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 132, Issue 36, Pages 12528-12530

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ja104695p

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Funding

  1. US-Israel Binational Science Foundation (BSF)
  2. U.S. DOE-BES Argonne-Northwestern Solar Energy Research Center (ANSER)
  3. Energy Frontier Research Center [DE-SC0001059]
  4. EU

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Here we report the first use of self-propagating molecule-based assemblies (SPMAs) as efficient electron-transporting layers for inverted organic photovoltaic (OPV) cells. P3HT-PCBM cells functionalized with optimized SPMAs exhibit power conversion efficiencies approaching 3.6% (open circuit voltage = 0.6 V) vs 1.5% and 2.4% for the bare ITO and Cs2CO3-coated devices, respectively. The dependence of cell response parameters on interlayer thickness is investigated, providing insight into how to further optimize device performance.

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