Advanced Optical Materials

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Recently Published Articles

  1. A Simple Approach to Biological Single-Cell Lasers Via Intracellular Dyes

    Sedat Nizamoglu, Kyung-Bok Lee, Malte C. Gather, Ki Su Kim, Mijeong Jeon, Seonghoon Kim, Matjaž Humar and Seok-Hyun Yun

    Article first published online: 21 MAY 2015 | DOI: 10.1002/adom.201500144

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    Biological cell lasers based on biocompatible fluorescent molecular probes are demonstrated. Instead of time-consuming genetically encoded gain, the new approach yields a fast and simple method to obtain lasing from single cells. This method also facilitates lasing of adherent mammalian cells.

  2. Ultrahigh Color-Stable, Solution-Processed, White OLEDs Using a Dendritic Binary Host and Long-Wavelength Dopants with Different Charge Trapping Depths

    Shumeng Wang, Baohua Zhang, Xingdong Wang, Junqiao Ding, Zhiyuan Xie and Lixiang Wang

    Article first published online: 20 MAY 2015 | DOI: 10.1002/adom.201500175

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    Solution-processed white organic light-emitting diodes (WOLEDs) simultaneously possessing ultrahigh color stability (ΔCIE (0.008, 0.008) from 50 to 17 200 cd m−2) and high power efficiency (41.8 lm W−1) are realized, using a dendritic binary host H2/OXD-7 and selecting long-wavelength phosphors with suitable trap depths and doping concentration, to restrain charge trapping.

  3. Dispersible Plasmonic Doped Metal Oxide Nanocrystal Sensors that Optically Track Redox Reactions in Aqueous Media with Single-Electron Sensitivity

    Rueben J. Mendelsberg, Patrick M. McBride, Jennifer T. Duong, Mark J. Bailey, Anna Llordes, Delia J. Milliron and Brett A. Helms

    Article first published online: 19 MAY 2015 | DOI: 10.1002/adom.201500208

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    Plasmonic doped metal oxide nanocrystals reversibly exchange electrons with redox-active small molecules, biomacromolecules, and live bacteria. These multi-electron exchanges modulate their free carrier concentration, dramatically changing their plasmonic optical properties in the NIR. Modeling their plasmonic absorption signatures allows quantitative analysis of redox events in the system with single-electron sensitivity.

  4. Electroluminescence Efficiency Enhancement in Quantum Dot Light-Emitting Diodes by Embedding a Silver Nanoisland Layer

    Xuyong Yang, Pedro Ludwig Hernandez-Martinez, Cuong Dang, Evren Mutlugun, Kang Zhang, Hilmi Volkan Demir and Xiao Wei Sun

    Article first published online: 13 MAY 2015 | DOI: 10.1002/adom.201500172

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    A quantum dot light-emitting diode (QLED) with substantially enhanced electroluminescence is demonstrated by embedding a thin layer of Ag nanoislands into a hole transport layer. A maximum external quantum efficiency of 7.1% is the highest efficiency value reported for green QLEDs with a similar structure, which corresponds to a 46% efficiency enhancement compared with the reference device.

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    Terahertz Waves: Perfect Extinction of Terahertz Waves in Monolayer Graphene over 2-nm-Wide Metallic Apertures (Advanced Optical Materials 5/2015) (page 714)

    Hyeong-Ryeol Park, Seon Namgung, Xiaoshu Chen, Nathan C. Lindquist, Vincenzo Giannini, Yan Francescato, Stefan A. Maier and Sang-Hyun Oh

    Article first published online: 12 MAY 2015 | DOI: 10.1002/adom.201570031

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    For enhanced light–matter interactions with 2D materials, ultra-small metallic nanogaps can be utilized. As shown in the image from S.-H. Oh and co-workers, light incident from below is strongly confined within these annular gaps and efficiently funneled through for extraordinarily large transmission. On page 667, by placing monolayer graphene at the exit of these gaps (the right side is covered with graphene), this enhanced transmission is blocked since the graphene absorbs 99% of the strongly confined waves.