Advanced Materials

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Recently Published Articles

  1. Monolayer Field-Effect Transistors of Nonplanar Organic Semiconductors with Brickwork Arrangement

    Liang Shan, Danqing Liu, Hao Li, Xiaomin Xu, Bowen Shan, Jian-Bin Xu and Qian Miao

    Article first published online: 27 APR 2015 | DOI: 10.1002/adma.201500149

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    Twisted hexabenzoperylenes (HBPs) that are equipped with four methoxyl groups and two alkyl chains self-assemble into lamellar semiconductors with an unusual brickwork arrangement of twisted π-faces. As a result of this brickwork arrangement, through a dip-coating process, these HBPs easily form one-molecule-thick nanosheets that behave as p-type organic semiconductors in monolayer transistors with field-effect mobility of up to 0.076 cm2 V−1 s−1.

  2. Planar CH3NH3PbI3 Perovskite Solar Cells with Constant 17.2% Average Power Conversion Efficiency Irrespective of the Scan Rate

    Jin Hyuck Heo, Dae Ho Song, Hye Ji Han, Seong Yeon Kim, Jun Ho Kim, Dasom Kim, Hee Won Shin, Tae Kyu Ahn, Christoph Wolf, Tae-Woo Lee and Sang Hyuk Im

    Article first published online: 27 APR 2015 | DOI: 10.1002/adma.201500048

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    Planar CH3NH3PbI3 perovskite solar cells with constant 17.2% average power conversion efficiency irrespective of the scan rate are described. These properties are attributed to the formation of pure CH3NH3PbI3 thin film by introduction of HI solution. Thereby charge injection/separation efficiency, charge collection efficiency, diffusion coefficient, carrier's life time, and traps are improved.

  3. Graphite Oxide to Graphene. Biomaterials to Bionics

    Brianna C. Thompson, Eoin Murray and Gordon G. Wallace

    Article first published online: 27 APR 2015 | DOI: 10.1002/adma.201500411

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    The versatility of graphene has led to utilization in many fields, including use as a material for tissue engineering and even in bionic applications, where electrical signals have been recorded from or sent to cells and tissues. This review discusses properties of graphene, its use in biocomposites, and the relevance of these advances to the field of medical bionics.

  4. Active Matrix Electronic Skin Strain Sensor Based on Piezopotential-Powered Graphene Transistors

    Qijun Sun, Wanchul Seung, Beom Joon Kim, Soonmin Seo, Sang-Woo Kim and Jeong Ho Cho

    Article first published online: 27 APR 2015 | DOI: 10.1002/adma.201500582

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    The piezopotential-powered active matrix strain sensor array based on piezopotential-gated graphene transistor (GT) is demonstrated using a piezoelectric polymer. The strain sensor based on piezopotential-gated GT exhibits excellent performances including ultrahigh sensitivity (gauge factor = 389) and good durability (>3000 bending and releasing cycles) with a minimum detectable strain at 0.008%.

  5. Crossing Over: Nanostructures that Move Electrons and Ions across Cellular Membranes

    Caroline M. Ajo-Franklin and Aleksandr Noy

    Article first published online: 27 APR 2015 | DOI: 10.1002/adma.201500344

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    Living systems generate energy and transduce signals by transporting electrons and ions across cellular membranes. To control these biological processes, researchers have created nanostructures that increase the transmembrane flux of electrons and ions. Recent advances in the creation of these de novo and biologically-derived nanostructures are summarized and remaining challenges to the widespread use of these materials in biotechnological applications are highlighted.

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