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Photoconductivity, photo-carrier density and lifetime in MEH-PPV were obtained by direct measurement of photo-conductivity and photo-induced change in reflectivity. Fast transient carrier mobility of 800 (cm2/Vs) and quantum efficiency of 0.5% were estimated.
Interference between 20 ns 193 nm ArF laser beams is used for the fabrication of blazed gratings on Cyclotene (BCB, Dow) polymer films. The grating shape is tuned for almost complete power diffraction into the 1/sup st/ order.
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