Abstract
We report the fabrication and optical properties of an organic light-emitting microcavity. The cavity is a laser dye-doped polycarbonate film sandwiched between two Bragg reflectors, fabricated by alternately depositing TiO2 and SiO2 sol-gel thin films. Reflectivity up to 98% was achieved using the Bragg reflectors. The cavity has a photonic band gap between 597 and 789 nm with a defect state inside the gap. Narrow-band optical pumped light emission from the cavity and its polarization dependence were observed. A cavity quality factor as high as 354 was achieved. Angular and polarization dependence of light emission were analyzed using the transfer matrix method. All experimental results agree well with theoretical calculations.
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