Understanding dynamics-efficiency relation in P3HT/PCBM solar cells
Research on organic photovoltaics (PVs) has increased dramatically in the last few years, owing to the promise of low manufacturing costs, high production throughput and large area applications. However, efficiencies are still rather limited to up to around 6%. There are a number of studies on the morphology of P3HT/PCBM blends in trying to understand how to achieve higher efficiencies, but little work on the dynamics and specifically how they control the transport within the cell system. Neutron spectroscopy is ideally suited for this as we can probe the dynamics in both amorphous phase and co-existing crystalline phases of both components. The signal, however, is a superposition of incoherent and coherent contributions. We propose to use D7 to separate the contributions and utilise its new chopper capability to probe individual dynamical responses.
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GARCIA SAKAI Victoria; CACIALLI Franco; PATERNO Giuseppe Maria; STEWART John Ross and WILDES Andrew. (2014). Understanding dynamics-efficiency relation in P3HT/PCBM solar cells. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-11-1715
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