Design principles for efficient singlet fission in anthracene-based organic semiconductors

Youn Jue Bae, Joseph A. Christensen, Gyeongwon Kang, Christos D. Malliakas, Jiawang Zhou, Jordan N. Nelson, Ryan M. Young, Yi-Lin Wu, Richard P Van Duyne, George C. Schatz, Michael R. Wasielewski

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Singlet fission (SF) in two or more electronically coupled organic chromophores converts a high-energy singlet exciton into two low-energy triplet excitons, which can be used to increase solar cell efficiency. Many known SF chromophores are unsuitable for device applications due to chemical instability and low triplet state energies. This work summarizes structurally dependent SF dynamics for 9,10-bis(phenylethynyl)anthracene (BPEA) and its derivatives in the solid-state using time-resolved optical spectroscopies, and electronic structure calculations. By modulating the packing structure in thin films, we can effectively tune electronic energy and coupling. The systematic study in BPEA organic semiconductors shows that maximizing the thermodynamic driving force can achieve the highest SF rate and efficiency.

Original languageEnglish (US)
Title of host publicationPhysical Chemistry of Semiconductor Materials and Interfaces XVIII
EditorsChristian Nielsen, Daniel Congreve, Hugo A. Bronstein, Felix Deschler
PublisherSPIE
ISBN (Electronic)9781510628618
DOIs
StatePublished - Jan 1 2019
EventPhysical Chemistry of Semiconductor Materials and Interfaces XVIII 2019 - San Diego, United States
Duration: Aug 11 2019Aug 13 2019

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11084
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferencePhysical Chemistry of Semiconductor Materials and Interfaces XVIII 2019
CountryUnited States
CitySan Diego
Period8/11/198/13/19

Keywords

  • Anthracene
  • Frankel Excitons
  • Organic Semiconductors
  • Singlet Fission

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Bae, Y. J., Christensen, J. A., Kang, G., Malliakas, C. D., Zhou, J., Nelson, J. N., Young, R. M., Wu, Y-L., Van Duyne, R. P., Schatz, G. C., & Wasielewski, M. R. (2019). Design principles for efficient singlet fission in anthracene-based organic semiconductors. In C. Nielsen, D. Congreve, H. A. Bronstein, & F. Deschler (Eds.), Physical Chemistry of Semiconductor Materials and Interfaces XVIII [110840Q] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11084). SPIE. https://doi.org/10.1117/12.2527346