Photo-switchable Donor-Acceptor (D-A) Dyad Interfacial Self-Assembled Monolayersfor Organic Photovoltaic Cells
Technical Report,01 Mar 2012,31 Aug 2015
University of Texas at El Paso El Paso United States
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Several Donor-Acceptor D-A dyads were designed and prepared to be used as photo switched interfacial layers to polarize organic solar cells when irradiated to increase the photoconversion efficiencies. Some D-A dyads were designed to be anchored on TiO2 supports to function as Dye Sensitized Solar Cells DSSCs. The concept of photoswitched interfacial polarization was clearly demonstrated using impedance spectroscopy for several triphenylamine-fullerene dyads, but their performance in photovoltaic devices was not remarkable, likely due to the presence of pinholes in the self-assembled monolayers. Some of the new compounds performed relatively well in DSSCs, some attaining PCEs of 4.7-5.6.
- Electrooptical and Optoelectronic Devices