Layer-by-Layer J-Aggregate Thin Films with a Peak Absorption Constant of 106 cm–1

Authors

  • M. S. Bradley,

    1. Laboratory of Organic Optics and Electronics, Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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  • J. R. Tischler,

    1. Laboratory of Organic Optics and Electronics, Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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  • V. Bulović

    1. Laboratory of Organic Optics and Electronics, Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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  • We are grateful to Prof. Michael Rubner for his informative discussions regarding polyelectrolyte LBL growth and to our collaborators at Brown University, Prof. Arto Nurmikko's group, for their insightful discussions regarding J-aggregate physics. This work was supported by DARPA Optocenter and MIT's NSF MRSEC Program. M. S. Bradley acknowledges the support of the National Defense Science and Engineering Graduate Fellowship program.

Abstract

original image

Layer-by-layer assembly is used to produce thin films of J-aggregates of cyanine dye molecules with an absorption constant of 106 cm–1. The films display high reflection and absorption at resonance (see Figure, ∼50 nm films) and nanoscale features that make them well suited for use in strong-coupling optoelectronic applications, enabling the creation of exciton–polariton optoelectronic devices that operate at room temperature.

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