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  1. You have full text access to this OnlineOpen article
    Lead-Free Hybrid Perovskite Absorbers for Viable Application: Can We Eat the Cake and Have It too?

    Lusheng Liang and Peng Gao

    Version of Record online: 20 NOV 2017 | DOI: 10.1002/advs.201700331

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    Real clean energy means the whole process of its generation has low environmental and health impact. Recent progress of five types of hybrid halide absorbers against the thorny problem of lead toxicity is introduced based on the state-of-the-art perovskite solar cells (PSCs). Can we make high-efficiency PSCs without being poisoned?

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    Modified Back Contact Interface of CZTSe Thin Film Solar Cells: Elimination of Double Layer Distribution in Absorber Layer

    Zhaojing Zhang, Liyong Yao, Yi Zhang, Jianping Ao, Jinlian Bi, Shoushuai Gao, Qing Gao, Ming-Jer Jeng, Guozhong Sun, Zhiqiang Zhou, Qing He and Yun Sun

    Version of Record online: 20 NOV 2017 | DOI: 10.1002/advs.201700645

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    The double layer distribution in Cu2ZnSnSe4 (CZTSe) solar cells can be eliminated entirely by increasing Sn content of the metallic precursor, and thus modifying the back contact of CZTSe solar cells and thus reducing the series resistance to a low level. The efficiency of CZTSe solar cell is improved from 5.07% with double layer distribution to 7.2% without double layer distribution.

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    Hydrothermal Cation Exchange Enabled Gradual Evolution of Au@ZnS–AgAuS Yolk–Shell Nanocrystals and Their Visible Light Photocatalytic Applications

    Jingwen Feng, Jia Liu, Xiaoyan Cheng, Jiajia Liu, Meng Xu and Jiatao Zhang

    Version of Record online: 20 NOV 2017 | DOI: 10.1002/advs.201700376

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    In this work, the hydrothermal cation exchange synthesis of Au@ZnS–AgAuS yolk–shell nanocrystals (Y–S NCs) with well-fabricated void size, ZnS–AgAuS shell and in situ generated Au cocatalyst are demonstrated. The concept of this strategy can be useful for the synthesis of other noble metal and semiconductor hybrid composites with tunable Y–S structures and new applications.

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    Size-Controlled Graphene Nanodot Arrays/ZnO Hybrids for High-Performance UV Photodetectors

    Ruidie Tang, Sancan Han, Feng Teng, Kai Hu, Zhiming Zhang, Mingxiang Hu and Xiaosheng Fang

    Version of Record online: 17 NOV 2017 | DOI: 10.1002/advs.201700334

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    Graphene nanodots are one of the most attractive graphene nanostructures due to their tunable optoelectronic properties. Uniformly sized graphene nanodots array (GNDA) fabricated by lithography is constructed as a ultraviolet photodetector (PD) with ZnO nanofilm. The photoelectric properties of ZnO/GNDA PD are highly GNDA size-dependent, which can be explained by different energy band alignments in ZnO/GNDA hybrids with different GNDA sizes.

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    Zigzag-Elongated Fused π-Electronic Core: A Molecular Design Strategy to Maximize Charge-Carrier Mobility

    Akito Yamamoto, Yoshinori Murata, Chikahiko Mitsui, Hiroyuki Ishii, Masakazu Yamagishi, Masafumi Yano, Hiroyasu Sato, Akihito Yamano, Jun Takeya and Toshihiro Okamoto

    Version of Record online: 15 NOV 2017 | DOI: 10.1002/advs.201700317

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    Chryseno[2,1-b:8,7-b′]dithiophene (ChDT) derivatives, which have a peculiar highest occupied molecular orbital (HOMO) configuration are newly designed and developed. This HOMO configuration is insusceptible to the change rate of the transfer integral from the molecular displacement in an aggregated structure induced by molecular motion. Notably, the synthesized ChDT derivatives exhibit a high mobility up to 10 cm2 V−1 s−1.