Advanced Materials

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Recently Published Articles

  1. Pt–Ni Alloy Nanoparticles as Superior Counter Electrodes for Dye-Sensitized Solar Cells: Experimental and Theoretical Understanding

    Jiawei Wan, Guojia Fang, Huajie Yin, Xuefeng Liu, Di Liu, Meiting Zhao, Weijun Ke, Hong Tao and Zhiyong Tang

    Article first published online: 31 OCT 2014 | DOI: 10.1002/adma.201403951

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    Pt–Ni alloy nanoparticles are synthesized and used as counter electrodes in dye-sensitized solar cells (DSSCs) for the first time. A PCE of 9.15% is achieved with the Pt3Ni counter electrode, displaying an evident improvement compared with the conventional pure Pt (8.33%). The cell stability is also obviously increased with the Pt3Ni counter electrode.

  2. A Reduction and pH Dual-Sensitive Polymeric Vector for Long-Circulating and Tumor-Targeted siRNA Delivery

    Jingguo Li, Xingsu Yu, Yong Wang, Yuanyuan Yuan, Hong Xiao, Du Cheng and Xintao Shuai

    Article first published online: 31 OCT 2014 | DOI: 10.1002/adma.201403877

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    A novel reduction and pH dual-sensitive nonviral vector for long-circulating and tumor-targeted siRNA delivery is described. The nanomedicine is negatively charged at neutral pH of bloodstream whereas positively charged at lower pH of tumor tissue (ca. 6.8). Interlayer crosslinking with disulfide bonds stabilizes the nanomedicine during blood circulation and allows quick intracellular siRNA release after endocytosis.

  3. Monolayer MoS2 Films Supported by 3D Nanoporous Metals for High-Efficiency Electrocatalytic Hydrogen Production

    Yongwen W. Tan, Pan Liu, Luyang Y. Chen, Weitao T. Cong, Yoshikazu Ito, Jiuhui H. Han, Xianwei W. Guo, Zheng Tang, Takeshi Fujita, Akihiko Hirata and Mingwei W. Chen

    Article first published online: 31 OCT 2014 | DOI: 10.1002/adma.201403808

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    The “edge-free” monolayer MoS2 films supported by 3D nanoporous gold show high catalytic activities towards HER, originating from large out-of-plane strains that are geometrically required to manage the 3D curvature of bicontinuous nanoporosity. The large lattice bending leads to local semiconductor-to-metal transition of 2H MoS2 and the formation of catalytically active sites for HER.

  4. A Hybrid Copper:Tungsten Suboxide Window Electrode for Organic Photovoltaics

    Oliver S. Hutter and Ross A. Hatton

    Article first published online: 31 OCT 2014 | DOI: 10.1002/adma.201404263

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    A new type of window electrode for organic photovoltaics (OPVs) based on an ultra-thin bilayer of copper and amorphous tungsten suboxide, which derives its remarkable optical and electrical properties from spontaneous diffusion of copper into the oxide layer. As the window electrode in efficient inverted OPVs, this unpatterned electrode is shown to perform as well as indium-tin oxide glass.

  5. Graphenized Carbon Nanofiber: A Novel Light-Trapping and Conductive Material to Achieve an Efficiency Breakthrough in Silicon Solar Cells

    Xi Chen, Baohua Jia, Boyuan Cai, Jia Fang, Ze Chen, Xiaodan Zhang, Ying Zhao and Min Gu

    Article first published online: 31 OCT 2014 | DOI: 10.1002/adma.201404123

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    An innovative 1D material—graphenized carbon nanofiber—is designed and synthesized. The nanofiber exhibits superior light-scattering property, ultralow absorption loss, and high electrical conductivity, and enables a wide range of applications. Simply integrating the nanofibers with the state-of-the-art silicon solar cells leads to a leaping efficiency boost of 3.8%, almost five times higher than the current world record.