Re-engineering Organic Solar Cells for Efficiency (IMAGE)
Caption
Top left: Working with the active layer of an organic solar cell, researchers significantly improved efficiency by introducing a squarine molecule (ASSQ), which both donates electrons and enhances the light absorption of the active layer of the cell, properly orienting the PBDB-T polymer that accepts the donor electron with the with the non-fullerene electron-acceptor molecule ITIC. Bottom left: By making the ASSQ equal to 4 percent of the weight of the sample, the nanotech researchers significantly improved its ability to extract current. Right: Photoluminescence spectroscopy depicts how energy is transferred between ASSQ and the polymer PBDB-T based on a selected wavelength. Blue is the goal: It indicates energy absorption.
Credit
NYU Tandon
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