8 December 2003 Efficient photorefractive polymers sensitized by CdSe nanoparticles
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Abstract
We report on an efficient and fast hybrid photorefractive polymer sensitized with CdSe quantum dots. The surface of the quantum dots was treated with 4-methylbenzenethiol. This surfactant allows the quantum dots to have an efficient photoinduced charge generation when mixed with a mixture of chromophores. The enhanced photoconductive properties lead to fast grating build-up times of 100 ms and below. In four-wave mixing experiments, overmodulation of the diffraction efficiency was observed at an applied field of 60 V/μm and gain coefficients on the order of 20 cm-1 at moderate fields.
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Canek Fuentes-Hernandez, Duck Jong Suh, Seth R. Marder, Bernard Kippelen, "Efficient photorefractive polymers sensitized by CdSe nanoparticles", Proc. SPIE 5216, Organic Holographic Materials and Applications, (8 December 2003); doi: 10.1117/12.506620; https://doi.org/10.1117/12.506620
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