Self-Assembled, Chemically Fixed Homojunctions in Semiconducting Polymers


  • The authors wish to acknowledge funding from the NSF STC-CMDITR (DMR# 0120967). G. P. B. would like to thank the Royalty Research Fund of the University of Washington for funding and Prof. S. A. Jenekhe for meaningful discussions regarding this manuscript.


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A p–n junction in an organic emissive polymer is chemically fixed through the use of polymerizable ions. This leads to a permanent configuration of compensating ions, unlike dynamic light-emitting electrochemical cells. The process is demonstrated with red-, green-, and blue-light-emissive polymers; a photovoltaic effect is also demonstrated.