Carrier transport in PbS nanocrystal conducting polymer composites
作者： Andrew Watt , Troy Eichmann , Halina Rubinsztein-Dunlop , Paul Meredith
DOI: 10.1063/1.2140885
关键词: Polymer 、 Composite material 、 Quantum dot 、 Electrical resistivity and conductivity 、 Electron mobility 、 Time of flight 、 Conductive polymer 、 Composite number 、 Materials science 、 Nanocrystal
摘要: In this letter we report the carrier mobilities in an inorganic nanocrystal: conducting polymer composite. The composite material question (lead sulphide nanocrystals poly [2-methoxy-5-(2′-ethyl-hexyloxy)-p-phenylene vinylene] (MEH-PPV) was made using a single-pot, surfactant-free synthesis. Mobilties were measured time of flight techniques. We have found that inclusion PbS MEH-PPV both balances and markedly increases hole electron mobilities—the mobility is increased by factor ∼105 ∼107 under applied bias 5kVcm−1. These results explain why dramatic improvements electrical conductivity photovoltaic performance are seen devices fabricated from these composites.
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