Advanced Optical Materials

Cover image for Vol. 5 Issue 4

Early View (Online Version of Record published before inclusion in an issue)


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  1. Communications

    1. Stoichiometric Effect on Optoelectronic Properties of Composition-Tunable CdS1−xSex Nanowires

      Qi Zhang, Xiaonan Xing, Xing Zhou, Xing Xiong and Tianyou Zhai

      Version of Record online: 31 JAN 2017 | DOI: 10.1002/adom.201600877

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      Uniform growth of composition-tunable 1D CdS1−xSex nanostructures without any phase segregation in these stoichiometric composition domains is reported. The samples have low current responsivity and a smaller exponent for samples with an S/Se ratio close to 1:1. These results provide a route to design optoelectronic features by manipulating the alloy composition in nanostructures to achieve optimal device performance.

    2. Tunable Amorphous Photonic Materials with Pigmentary Colloidal Nanostructures

      Jinkyu Han, Elaine Lee, Jessica K. Dudoff, Michael Bagge-Hansen, Jonathan R. I. Lee, Andrew J. Pascall, Joshua D. Kuntz, Trevor M. Willey, Marcus A. Worsley and Thomas Yong-Jin Han

      Version of Record online: 31 JAN 2017 | DOI: 10.1002/adom.201600838

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      Amorphous photonic structures using pigmentary α-Fe2O3/SiO2 core–shell nanoparticles are succesfully fabricated. The resulting non-iridicent brilliant colors can be manipulated by shell thickness, particle concentration, and external electrical stimuli using electrophoretic deposition process. Fully reversible and instantaneous color changes as well as noticeable difference between transmitted and reflected colors is observed.

    3. Plasmonic Titanium Nitride Nanostructures via Nitridation of Nanopatterned Titanium Dioxide

      Urcan Guler, Dmitry Zemlyanov, Jongbum Kim, Zhuoxian Wang, Rohith Chandrasekar, Xiangeng Meng, Eric Stach, Alexander V. Kildishev, Vladimir M. Shalaev and Alexandra Boltasseva

      Version of Record online: 30 JAN 2017 | DOI: 10.1002/adom.201600717

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      Plasmonic titanium nitride nanostructures are obtained via nitridation of titanium dioxide. Results show that complex nano- and microscale designs of refractory plasmonic nitrides can be realized by utilizing the well-understood oxide material synthesis. Large-scale 3D nanoarchitectures will enable the use of refractory plasmonic materials in a variety of areas including spectrally and angularly selective metamaterials, plasmon-enhanced photocatalysis, and photothermal systems.

  2. Full Papers

    1. Plasmon-Induced Enhancement of Infrared Detection Using a Carbon Nanotube Diode

      Huixin Huang, Dehui Zhang, Nan Wei, Sheng Wang and Lian-Mao Peng

      Version of Record online: 30 JAN 2017 | DOI: 10.1002/adom.201600865

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      Plasmonic enhanced electrodes are fabricated to enhance the light absorption of the single carbon nanotubes (CNTs) grown by chemical vapor depostion (CVD) methods. The plasmonic structure can use the incident polarization, which is perpendicular to the CNTs, and shows an enhancement about 200 times compared to a regular device at 1970 nm. The enhancement is shown to depend on the positions of CNTs and applied gate voltages.

  3. Communications

    1. Synergistic Effects of Wrinkled Graphene and Plasmonics in Stretchable Hybrid Platform for Surface-Enhanced Raman Spectroscopy

      Wenjun Chen, Xuchun Gui, Yongjia Zheng, Binghao Liang, Zhiqiang Lin, Chengchun Zhao, Huanjun Chen, Zefeng Chen, Xinming Li and Zikang Tang

      Version of Record online: 30 JAN 2017 | DOI: 10.1002/adom.201600715

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      A flexible and stretchable surface-enhanced Raman scattering substrate is fabricated by depositing Au nanoparticles on wrinkled graphene. The hybrid platform exhibits ultrahigh sensitivity and outstanding stability for chemical detection and analysis, even under tensile strain of up to 50% due to the synergistic effects of wrinkled graphene and plasmonics. Furthermore, it can identify different analytes synchronously.

  4. Full Papers

    1. New Electro-Optic Salt Crystals for Efficient Terahertz Wave Generation by Direct Pumping at Ti:Sapphire Wavelength

      Seung-Chul Lee, Bong Joo Kang, Min-Jeong Koo, Seung-Heon Lee, Jae-Hyun Han, Jae-Young Choi, Won Tae Kim, Mojca Jazbinsek, Hoseop Yun, Dongwook Kim, Fabian Rotermund and O-Pil Kwon

      Version of Record online: 27 JAN 2017 | DOI: 10.1002/adom.201600758

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      New electro-optic salt crystalsintroducing electron-rich naphthalene-sulfonate into anions instead of conventional benzene-sulfonate exhibit highly efficient and broadband terahertz wave generation based on the wavelength of technologically important Ti:sapphire laser.

    2. Broadband High-Responsivity Photodetectors Based on Large-Scale Topological Crystalline Insulator SnTe Ultrathin Film Grown by Molecular Beam Epitaxy

      Tian Jiang, Yunyi Zang, Honghui Sun, Xin Zheng, Yu Liu, Yan Gong, Liang Fang, Xiang'ai Cheng and Ke He

      Version of Record online: 28 DEC 2016 | DOI: 10.1002/adom.201600727

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      Broadband high-responsivity photodetectors are fabricated by a simple molecular beam epitaxy process from SnTe ultrathin films. The photoconductive detectors exhibit a fast and stable photoresponse from the visible to the mid-infrared range (405 nm–3.8 µm) with a relatively high responsivity (3.75 AW−1 at 2003 nm and room temperature), which will promote the applications of broadband and sensitive optoelectronic devices.

    3. Significant Enhancement of Blue OLED Performances through Molecular Engineering of Pyrimidine-Based Emitter

      Kohei Nakao, Hisahiro Sasabe, Ryutaro Komatsu, Yuya Hayasaka, Tatsuya Ohsawa and Junji Kido

      Version of Record online: 27 DEC 2016 | DOI: 10.1002/adom.201600843

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      A small structural differencein the nitrogen positions of pyrimidine-based thermally activated delayed fluorescence emitters significantly influences the photophysical events and organic light-emitting device performances. A blue device exhibits a high external quantum efficiency close to 25%.

  5. Reviews

    1. Ultrafast All-Optical Switching

      Zhen Chai, Xiaoyong Hu, Feifan Wang, Xinxiang Niu, Jingya Xie and Qihuang Gong

      Version of Record online: 27 DEC 2016 | DOI: 10.1002/adom.201600665

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      Ultrafast all-optical switching, a core unit in on-chip optical interconnection and ultrahigh speed information photonic chips, can control the propagation state of signal light. In this review, a summary of the fundamental concepts and mechanisms, composed structures, materials and outstanding performance indexes in all-optical switching is provided. Different configurations are compared and an overview of the current research status and remaining challenges is given.

  6. Full Papers

    1. Optoelectronic Enhancement of Ultrathin CuIn1–xGaxSe2 Solar Cells by Nanophotonic Contacts

      Guanchao Yin, Mark W. Knight, Marie-Claire van Lare, Maria Magdalena Solà Garcia, Albert Polman and Martina Schmid

      Version of Record online: 27 DEC 2016 | DOI: 10.1002/adom.201600637

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      Soft-imprinted SiOx photonic nanoparticles are integrated at the CuIn1–xGaxSe2 (CIGSe)/indium tin oxide (ITO) interface of CIGSe solar cells with an absorber thickness of only 390 nm. In conjunction with a Ag back reflector and an antireflection layer, the champion cell achieves a Jsc of 34.0 mA cm−2, corresponding to 93% of the Jsc reached by the thick world-record cell.

    2. Polarization-Induced Chirality in Metamaterials via Optomechanical Interaction

      Mingkai Liu, David A. Powell, Rui Guo, Ilya V. Shadrivov and Yuri S. Kivshar

      Version of Record online: 27 DEC 2016 | DOI: 10.1002/adom.201600760

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      Optomechanically induced chirality, a novel mechanism to trigger achiral–chiral phase transition in metamaterials, is proposed and studied theoretically. This concept is illustrated for a specially designed metasurface, in which the optical force acting on the meta-atoms becomes highly asymmetric for an appropriate incident polarization. The asymmetric force can transform the planar achiral metasurface into a stereoscopic chiral metamaterial with controllable handedness.

  7. Reviews

    1. Plasmonics in Organic and Perovskite Solar Cells: Optical and Electrical Effects

      Kah Chan, Matthew Wright, Naveen Elumalai, Ashraf Uddin and Supriya Pillai

      Version of Record online: 27 DEC 2016 | DOI: 10.1002/adom.201600698

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      Various enhancement mechanisms from integration of plasmonic nanostructures in organic and perovskite solar cells are discussed. Besides the commonly reported optical effects in plasmonic devices, this review also focuses on the electrical effects. These effects, which are well-reported for organic solar cells, offer insights into the emerging field of plasmonic perovskite solar cells.

  8. Communications

    1. Light Manipulation in Metallic Nanowire Networks with Functional Connectivity

      Henning Galinski, Andrea Fratalocchi, Max Döbeli and Federico Capasso

      Version of Record online: 27 DEC 2016 | DOI: 10.1002/adom.201600580

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      Guided by ideas from complex systems, a new class of network metamaterials is introduced for light manipulation, which are based on the functional connectivity among heterogeneous subwavelength components arranged in complex networks. The model system is a nanonetwork formed by dealloying a metallic thin film. The connectivity of the network is deterministically controlled, enabling the formation of tunable absorbing states.

  9. Full Papers

    1. Bifluorene Single Crystals with Extremely Low-Threshold Amplified Spontaneous Emission

      Gediminas Kreiza, Paulius Baronas, Edvinas Radiunas, Povilas Adomėnas, Ona Adomėnienė, Karolis Kazlauskas, Jean-Charles Ribierre, Chihaya Adachi and Saulius Juršėnas

      Version of Record online: 27 DEC 2016 | DOI: 10.1002/adom.201600823

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      An extremely low amplified spontaneous emission threshold (700 W cm−2) is reported in sublimation-grown single crystals of bifluorene compounds. Such low thresholds are found to originate from high radiative rates (1.5 × 109 s−1), absence of excited-state absorption in the gain region, and favorable orientation of transition dipole moments accompanied by excellent waveguiding properties of the single crystals.

  10. Progress Reports

    1. Structural Color in Marine Algae

      Chris J. Chandler, Bodo D. Wilts, Juliet Brodie and Silvia Vignolini

      Version of Record online: 18 NOV 2016 | DOI: 10.1002/adom.201600646

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      Marine algae feature complex photonic structures to manage and reflect incident light. Here, the photonic mechanisms of these marine plants is reviewed and the geographical distribution, ecology and phylogenetic placement of structurally colored brown algae is discussed as well as their general influence on the global marine ecosystem.

  11. Full Papers

    1. Chiral Light in Helically Twisted Photonic Lattices

      Alessandro Zannotti, Falko Diebel, Martin Boguslawski and Cornelia Denz

      Version of Record online: 9 NOV 2016 | DOI: 10.1002/adom.201600629

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      The propagation of chiral light in optically induced helical photonic waveguide arrays is investigated. Manifested in their chiral interaction, the system's selectivity to optical orbital angular momentum is demonstrated. In order to realize twisted refractive index waveguide arrays, 3D modulated light fields are tailored to nonlinearly inscribe these helical waveguides in photosensitive material.

    2. Plasmonic Nanostars with Hot Spots for Efficient Generation of Hot Electrons under Solar Illumination

      Xiang-Tian Kong, Zhiming Wang and Alexander O. Govorov

      Version of Record online: 30 SEP 2016 | DOI: 10.1002/adom.201600594

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      Plasmonic nanostars exhibit excellent characteristics for hot electron generation under solar illumination. Because of multiple plasmonic hot spots, the nanostars significantly overcome nanorods and nanospheres. Silver nanocrystals with stronger plasmonic enhancements are superior to the gold ones regarding quantum rates of hot electron generation.


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