Advanced Optical Materials

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Recently Published Articles

  1. Polarization-Selective Patterning in an Anisotropic Smectic B Film

    My-Phung Van, Cees W. M. Bastiaansen and Dirk J. Broer

    Article first published online: 11 FEB 2016 | DOI: 10.1002/adom.201500704

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    The versatility of optical lithography can be expanded by using the polarization state of light as an additional parameter next to the intensity of light. This result is confirmed by exposing a highly polarization-selective photoreactive material with polarization holography which results in the formation of defined grating structures.

  2. Strongly Enhanced Long-Lived Persistent Room Temperature Phosphorescence Based on the Formation of Metal–Organic Hybrids

    Xiaogang Yang and Dongpeng Yan

    Article first published online: 9 FEB 2016 | DOI: 10.1002/adom.201500666

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    Through a molecule–metal coordination, the long-lived room temperature phosphorescence (room temperature phosphorescence lifetime: 1.3 s) can be obtained within the metal–organic frameworks. These frameworks present tunable afterglow decay emission as well as a heat- and pH-stimuli phosphorescence response.

  3. Cloaking Contacts on Large-Area Organic Light-Emitting Diodes

    Frederik Mayer, Robert Schittny, Amos Egel, Andreas Niemeyer, Jan Preinfalk, Ulrich Lemmer and Martin Wegener

    Article first published online: 8 FEB 2016 | DOI: 10.1002/adom.201500652

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    Metal contact grids on top of organic light-emitting diodes are often necessary electrically, but they cast unwanted optical shadows. Invisibility cloaks for diffuse light can reduce these shadows and thereby homogenize the light emission. Optimized structures lead to only small reduction of the overall light emission. Monte Carlo ray-tracing simulations and model experiments are in good agreement.

  4. Ultrathin Second-Harmonic Metasurfaces with Record-High Nonlinear Optical Response

    Jongwon Lee, Nishant Nookala, J. Sebastian Gomez-Diaz, Mykhailo Tymchenko, Frederic Demmerle, Gerhard Boehm, Markus-Christian Amann, Andrea Alù and Mikhail A. Belkin

    Article first published online: 8 FEB 2016 | DOI: 10.1002/adom.201500723

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    Ultrathin metasurfaces with record-high nonlinear optical response of 1.2 × 106 pm V−1 for second harmonic generation are experimentally demonstrated in the mid-infrared spectral range. A second harmonic power conversion efficiency of 0.075% is achieved in a 400-nm-thick (λ/25) metasurface at a pump intensity of only 15 kW cm−2.

  5. Lithography-Free Large-Area Metamaterials for Stable Thermophotovoltaic Energy Conversion

    Zachary J. Coppens, Ivan I. Kravchenko and Jason G. Valentine

    Article first published online: 8 FEB 2016 | DOI: 10.1002/adom.201500727

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    A large-area metamaterial thermal emitter is fabricated using facile, lithography-free techniques. The device is composed of conductive oxides, refractory ceramics, and noble metals and shows stable, selective emission after exposure to 1173 K for 22 h in oxidizing and inert atmospheres. The results indicate that the metamaterial can be used to achieve high-performance thermophotovoltaic devices for applications such as portable power generation.