Oligo- and Polythiophene/ZnO Hybrid Nanowire Solar Cells

Department of Chemistry, University of California-Berkeley, CA 94720, USA.
Nano Letters (Impact Factor: 13.59). 12/2009; 10(1):334-40. DOI: 10.1021/nl9036752
Source: PubMed


We demonstrate the basic operation of an organic/inorganic hybrid single nanowire solar cell. End-functionalized oligo- and polythiophenes were grafted onto ZnO nanowires to produce p-n heterojunction nanowires. The hybrid nanostructures were characterized via absorption and electron microscopy to determine the optoelectronic properties and to probe the morphology at the organic/inorganic interface. Individual nanowire solar cell devices exhibited well-resolved characteristics with efficiencies as high as 0.036%, J(sc) = 0.32 mA/cm(2), V(oc) = 0.4 V, and a FF = 0.28 under AM 1.5 illumination with 100 mW/cm(2) light intensity. These individual test structures will enable detailed analysis to be carried out in areas that have been difficult to study in bulk heterojunction devices.

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Available from: Thomas W Holcombe, Jul 18, 2014
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    • "Various synthetic ways were reported to synthesize ZnO nanoparticles such as laser-ablation (Scarisoreanu et al. 2005), spray pyrolysis (Tani et al. 2002), hydrothermal method (Søndergaard et al. 2011; Ni et al. 2005), sol–gel method (Ivanova et al. 2010; Znaidi et al. 2003a; Znaidi et al. 2003b), vapor condensation method (Haldar et al. 2010), common thermal evaporation method (Takahashi et al. 2000; Zhou and Li 2005), and precipitation method (Zhou and Li 2005; Wu et al. 2007; Briseno et al. 2010; Zhou et al. 2007; Liewhiran et al. 2006). In recent years, the precipitation method have been used for the synthesis of ZnO with a wurtzite structure, and a wide range of particle sizes and morphologies such as nanowires (Zhou and Li 2005), nanorods (Zhou and Li 2005; Briseno et al. 2010), and spherical nanoparticles (Zhou and Li 2005; Wu et al. 2007; Briseno et al. 2010; Zhou et al. 2007; Liewhiran et al. 2006). The particle formation including nucleation and growth steps and the particle size and morphology depend on several parameters such as: (1) the nature of the precursor and its concentration (Zhang and Li 2003), (2) the type of solvent (Hu et al. 2003, 2005) and the acidity/basicity of the mixture (Demir et al. 2006, Viswanatha et al. 2007a), (3) the type of stabilizers or capping agent and their concentrations (Guo et al. 2000), (4) the aging time and temperature of the mixture (Viswanatha et al. 2007b), and (5) the annealing temperature of the precipitated particles (Noack and Eychmüller 2002). "
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