Efficient Triplet Harvesting in an Air-stable Diketopyrrolopyrrole Singlet Fission Solar Cell

ORAL

Abstract

Diketopyrrolopyrrole (DPP) is an air-stable molecule which has recently been shown through spectroscopic investigation to host excitonic singlet fission (SF). Here we synthesize DPP-based solar cells using dicyano naphthalene diimide (dCN NDI) acceptor molecules and quantify SF generated carrier extraction efficiency. The characteristic dependence of the photocurrent as a function of magnetic field, which is the unambiguous signature of SF, is observed. Furthermore, we show that DPP-based photovoltaic devices are remarkably air-stable, unencapsulated devices do not exhibit a degradation of electrical or photovoltaic properties as a result of aging. Therefore, DPP is promising material for organic SF photovoltaic devices

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Presenters

  • Milan Begliarbekov

    • NanoScience, CUNY Advanced Science Research Center
    • The Graduate Center, City University of New York
    • CUNY Graduate Center

Authors

  • Andrew Levine

    • NanoScience, CUNY Advanced Science Research Center

  • Joseph Hammer

    • The Graduate Center, City University of New York
    • NanoScience, CUNY Advanced Science Research Center

  • Saul Blain

    • The Graduate Center, City University of New York
    • NanoScience, CUNY Advanced Science Research Center

  • MAJHARUL HOQUE

    • NanoScience, CUNY Advanced Science Research Center
    • The Graduate Center, City University of New York

  • Vishal Narang

    • NanoScience, CUNY Advanced Science Research Center
    • The Graduate Center, City University of New York

  • Adam Braunschweig

    • NanoScience, CUNY Advanced Science Research Center
    • The Graduate Center, City University of New York

  • Milan Begliarbekov

    • NanoScience, CUNY Advanced Science Research Center
    • The Graduate Center, City University of New York
    • CUNY Graduate Center