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Color-Selective Printed Organic Photodiodes for Filterless Multichannel Visible Light Communication 

Noah Strobel, Nikolaos Droseros, Wolfgang Köntges, Mervin Seiberlich, Manuel Pietsch,
Stefan Schlisske, Felix Lindheimer, Rasmus R. Schröder, Uli Lemmer, Martin Pfannmöller,
Natalie Banerji, and Gerardo Hernandez-Sosa*
N. Strobel, M. Seiberlich, M. Pietsch, S. Schlisske, F. Lindheimer, Prof. U. Lemmer, Dr. G. Hernandez-Sosa,
Light Technology Institute,Karlsruhe Institute of Technology, Germany
N. Strobel, M. Seiberlich, M. Pietsch, S. Schlisske, F. Lindheimer, Dr. G. Hernandez-Sosa, InnovationLab, Germany
N. Droseros, Prof. N. Banerji, Department of Chemistry and Biochemistry, University of Bern , Switzerland
W. Köntges, Prof. R. R. Schröder, Dr. M. Pfannmöller, Centre for Advanced Materials, Heidelberg University, Germany
Prof. U. Lemmer, Institute of Microstructure Technology, Karlsruhe Institute of Technology, Germany
Reference: Adv. Mater. 2020, 1908258 

Abstract

  • This work introduces a general solution for printing wavelength-selective bulk-heterojunction photodetectors through engineering of the ink formulation.
  • Nonfullerene acceptors are incorporated in a transparent polymer donor matrix to narrow and tune the response in the visible range without optical filters or light-management techniques.
  • A thorough morphological and spectroscopic investigation finds excellent charge-carrier dynamics enabling state-of-the-art responsivities >102 mA W−1 and cutoff frequencies >1.5 MHz.    
  • The color selectivity and high performance are demonstrated in a filterless visible-light-communication system capable of demultiplexing intermixed optical signals.

Materials & Devices

*Figures reference : Adv. Mater. 2020, 1908258

Key Words: ITIC-4F, IDFBR, organic photodiodes, OPD