Photorefractive Materials: Innovative Sensitizer DiPBI Outperforms PCBM (Adv. Mater. 16/2012)



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The cover illustrates a photorefractive composite-based, white light, multibeam coupler, wherein the novel broad-band sensitizer DiPBI displaces the widely used PCBM. As the absorption spectrum of DiPBI stretches over the whole range of visible light, operation at any desired wavelength is possible. This essential advantage over PCBM makes the new compound a promising candidate for optical computing and colored 3D displays. On page 2104, Z. Wang and co-workers present this significant step towards the realization of such devices.