Berlin 2005 – scientific programme

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HL: Halbleiterphysik

HL 58: Poster IIb

HL 58.32: Poster

Tuesday, March 8, 2005, 16:30–19:00, Poster TU F

High quality opals from organic-inorganic material — •Jianhui Ye and Rudolf Zentel — Department of Chemistry, University of Mainz, Duesbergweg 10-14, D-55099 Mainz

An attractive feature of synthetic opals, in comparison with their natural counterparts, arises from the possibility to use the lattice of sphere as a template that can be infiltrated with a variety of ferroelectric, nonlinear, and photorefractive materials. This permits the preparation of diverse materials compositions for optoelectronic applications. The photonic crystal properties of such diverse materials compositions are strongly dependent (I) on the quality of the initial opal and (II) on the filling factor of the opaline voids. We use high quality polymer opals as template and infiltrate with an organic-inorganic monomer (ORMOCER). This monomer can be photopolymerized within the opaline voids leading to No-dqperfectNo-dq replica structure with filling factor above 90%. This is different from inorganic materials prepared by chemical vapor deposition or a sol-gel process.