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  1. Fully Digitally Printed Image Sensor Based on Organic Photodiodes

    Ralph Eckstein, Noah Strobel, Tobias Rödlmeier, Konstantin Glaser, Uli Lemmer and Gerardo Hernandez-Sosa

    Version of Record online: 19 JAN 2018 | DOI: 10.1002/adom.201701108

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    An organic photodiode sensor array is fabricated entirely by digital printing techniques. The sensor is composed of 256 individual pixels with an active area of ≈250 µm × 300 µm. The sensor array exhibits high reproducibility and 100% fabrication yields with spectral responsivities of up to 0.3 A W−1, and calculated specific detectivities >1012 Jones.

  2. Reversible Thermal-Induced Fluorescence Color Change of Tetraphenylethylene-Labeled Nylon-6

    Jiaru Xu, Wenxi Ji, Chao Li, Yufeng Lv, Zijie Qiu, Longcheng Gao, Erqiang Chen, Jacky W. Y. Lam, Benzhong Tang and Lei Jiang

    Version of Record online: 19 JAN 2018 | DOI: 10.1002/adom.201701149

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    Tetraphenylethylene (TPE)-labeled nylon-6 exhibits reversible thermal-induced fluorescence color change. The thermal expansion of the polymer at high temperature induces the phenyl rings of TPE to rotate in a greater extent, which decreases the conjugation of TPE to lead to a blueshift in its fluorescence. The fluorescent properties provide applications in fields like chemosensor and security label.

  3. New Bichromophoric Triplet Photosensitizer Designs and Their Application in Triplet–Triplet Annihilation Upconversion

    Xinyan Guo, Yiming Liu, Qi Chen, Dahui Zhao and Yuguo Ma

    Version of Record online: 19 JAN 2018 | DOI: 10.1002/adom.201700981

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    Molecular design principles of photosensitizers applicable to triplet–triplet annihilation upconversion (TTA UC) are discussed. Bichromophoric molecular scaffolds have been widely adopted recently. In addition to enhancing light harvesting, the bichromophoric designs are effective at extending triplet lifetime of the system. Such a unique property ensures efficient energy transfer from sensitizer to annihilator and promotes efficient TTA UC.

  4. High-Performance Volatile Organic Compounds Microsensor Based on Few-Layer MoS2-Coated Photonic Crystal Cavity

    Chenyang Zhao, Xuetao Gan, Qingchen Yuan, Siqi Hu, Liang Fang and Jianlin Zhao

    Version of Record online: 19 JAN 2018 | DOI: 10.1002/adom.201700882

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    A high-performance optical microsensor for volatile organic compounds detection is presented by integrating few-layer molybdenum disulfide onto a photonic crystal (PC) cavity. The MoS2–PC cavity microsensor presents a good sensitivity, fast response time and high selectivity. This high performance indicates possible applications of the MoS2–PC cavity in real-time rapid vapor monitoring.

  5. Efficient Metacoupler for Complex Surface Plasmon Launching

    Quan Xu, Xueqian Zhang, Minggui Wei, Guanhua Ren, Yuehong Xu, Yanfeng Li, Huabin Wang, Chunmei Ouyang, Jiaguang Han and Weili Zhang

    Version of Record online: 19 JAN 2018 | DOI: 10.1002/adom.201701117

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    A new design scheme of plasmonic metacoupler is proposed and experimentally verified. Through proper design of C-shaped slit resonators, free-space light can be efficiently coupled into surface plasmons, whose phase and amplitude can be simultaneously manipulated, and complex launching can thus be achieved. The universal design scheme would offer opportunities for practical plasmonic applications in a broader electromagnetic spectrum.