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Recently Published Articles

  1. One-Dimensional Densely Aligned Perovskite-Decorated Semiconductor Heterojunctions with Enhanced Photocatalytic Activity

    Mengye Wang, Dajiang Zheng, Meidan Ye, Chuchu Zhang, Binbin Xu, Changjian Lin, Lan Sun and Zhiqun Lin

    Article first published online: 31 OCT 2014 | DOI: 10.1002/smll.201402692

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    Using one-dimensional rutile TiO2nanorod arrays as the structure-directing scaffold as well as the TiO2 source to two consecutive hydrothermal reactions, densely aligned SrTiO3-modified rutile TiO2 heterojunction photocatalysts are crafted for the first time. Such one-dimensional perovskite-decorated semiconductor nanoarrays exhibit high photocatalytic performance and are attractive for optoelectronic applications in photovoltaics, water-splitting, etc.

  2. Overcoming Concealment Effects of Targeting Moieties in the PEG Corona: Controlled Permeable Polymersomes Decorated with Folate-Antennae for Selective Targeting of Tumor Cells

    Mohamed A. Yassin, Dietmar Appelhans, Ralf Wiedemuth, Petr Formanek, Susanne Boye, Albena Lederer, Achim Temme and Brigitte Voit

    Article first published online: 31 OCT 2014 | DOI: 10.1002/smll.201402581

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    Polymersomes bearing freely accessible folate antennae on their surfaces overcome the concealment of folate moieties in the PEG corona. Thus, the selective internalization of such polymersomes into tumor cells is improved. The polymersomes have a pH-sensitive membrane, prohibiting premature Dox release until they are triggered in the acidic endosomal compartment.

  3. High-Responsivity Graphene/InAs Nanowire Heterojunction Near-Infrared Photodetectors with Distinct Photocurrent On/Off Ratios

    Jinshui Miao, Weida Hu, Nan Guo, Zhenyu Lu, Xingqiang Liu, Lei Liao, Pingping Chen, Tao Jiang, Shiwei Wu, Johnny C. Ho, Lin Wang, Xiaoshuang Chen and Wei Lu

    Article first published online: 31 OCT 2014 | DOI: 10.1002/smll.201402312

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    In this paper, graphene/InAs nanowire heterojunction near-infrared photodetectors are fabricated with a high Ilight/Idark ratio of 5 × 102. The photo­responsivity of these heterojunction near-infrared photodetectors is ∼0.5 A/W, which is much larger than that of graphene infrared photodetectors (∼0.1 mA/W). Moreover, the back-gated voltage can control the carrier density of the detectors.

  4. Metallic Nanocatalysis: An Accelerating Seamless Integration with Nanotechnology

    Yihu Dai, Ye Wang, Bin Liu and Yanhui Yang

    Article first published online: 31 OCT 2014 | DOI: 10.1002/smll.201400847

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    Metallic nanocatalysts exhibit structure-sensitive catalytic activities. In this review article, recent progress on shaped metallic nanocatalysts is examined and several influential parameters including particle size, composition, shape, and ligand effects are discussed, as well as finally highlight single-atom metallic catalysts and our perspectives on nanocatalysis.

  5. Perovskite Solar Cells: From Materials to Devices

    Hyun Suk Jung and Nam-Gyu Park

    Article first published online: 30 OCT 2014 | DOI: 10.1002/smll.201402767

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    Since the first report on a perovskite-sensitized solar cell developed in 2009, and long-term durable solid-state perovskite solar cell developed in 2012, power conversion efficiencies (PCEs) of over 15% have been reported. The highest PCE of a laboratory cell was 19.3%, which was developed by UCLA in 2014. Perovskite solar cells keep on surging, where better understanding of the opto-electronic properties of perovskite light absorbers is crucial to design higher-performing perovskite solar cells.