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Metallo-Hydrogel-Assisted Synthesis and Direct Writing of Transition Metal Dichalcogenides

机译：金属水凝胶辅助的过渡金属二硫属元素化物的合成和直接写入

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摘要

Two dimensional (2D) transition metal dichalcogenides (TMDCs) have attracted interest for their compelling nanoscale new properties and numerous potential applications including fast optoelectronic devices, ultrathin photovoltaics, and high-performance catalysts. Large-scale growth of uniform TMDC materials is essential for investigating their physics and for their integration into devices. However, the wafer scale deposition of TMDCs on arbitrary nonselective substrates is still beyond the current state-of-the-art. In this article, a method to synthesize layered TMDCs (MoS2 and WS2) at the wafer-scale by sulfurization of transition metal ions (Mo5+ and W6+) in a gelatin template (metallo-hydrogel) is reported. This process is adaptable to versatile substrates, including amorphous silicon oxide, high-temperature quartz, and silicon. Although the products are nominally few layer materials, direct band photoluminescent (approximate to 1.8 eV), similar to single- or decoupled multilayer MoS2 is observed. Finally, the solution-based deposition enables contact printing of TMDC channels to be useable for device applications including thin film transistors with printed silver contacts using the same process.
机译：二维（2D）过渡金属二硫化碳（TMDC）引人注目的是其引人注目的纳米级新特性以及众多潜在应用，包括快速光电器件，超薄光伏电池和高性能催化剂。均匀生长的TMDC材料的大规模生长对于研究其物理性质以及将其集成到设备中至关重要。然而，TMDC在任意非选择性衬底上的晶片规模沉积仍然超出当前的现有技术水平。本文报道了一种通过在明胶模板（金属水凝胶）中硫化过渡金属离子（Mo5 +和W6 +）而在晶圆级合成分层TMDC（MoS2和WS2）的方法。该工艺适用于多种基材，包括非晶氧化硅，高温石英和硅。尽管产品名义上的层材料很少，但观察到类似于单层或解耦多层MoS2的直接带光致发光（约1.8 eV）。最后，基于溶液的沉积使TMDC通道的接触式印刷可用于设备应用，包括使用相同工艺印刷带有银触点的薄膜晶体管。

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  • 来源
    《Advanced Functional Materials》 |2019年第27期|1807612.1-1807612.9|共9页
  • 作者

    Zang Xining; Hohman J. Nathan; Yao Kaiyuan; Ci Penghong; Yan Aiming; Wei Minsong; Hayasaka Takeshi; Zettl Alex; Schuck P. James; Wu Junqiao; Lin Liwei;

  • 作者单位

    MIT, Elect Res Lab, Cambridge, MA 02139 USA|Univ Calif Berkeley, Mech Engn, Berkeley, CA 94704 USA;

    Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA;

    Univ Calif Berkeley, Mech Engn, Berkeley, CA 94704 USA|Columbia Univ, Mech Engn, New York, NY 10027 USA;

    Univ Calif Berkeley, Mat Sci & Engn, Berkeley, CA 94704 USA;

    Univ Calif Berkeley, Dept Phys, Berkeley, CA 94704 USA|Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA;

    Univ Calif Berkeley, Mech Engn, Berkeley, CA 94704 USA;

    Univ Calif Berkeley, Mech Engn, Berkeley, CA 94704 USA;

    Univ Calif Berkeley, Dept Phys, Berkeley, CA 94704 USA|Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA|Univ Calif Berkeley, Kavli Energy NanoSci Inst, Berkeley, CA 94720 USA|Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA;

    Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA|Columbia Univ, Mech Engn, New York, NY 10027 USA;

    Univ Calif Berkeley, Mat Sci & Engn, Berkeley, CA 94704 USA;

    Univ Calif Berkeley, Mech Engn, Berkeley, CA 94704 USA;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    contact printing; self-assembly; thin film transistor (TFT) array; transition metal dichalcogenide (TMDC);

    机译：接触印刷;自组装;薄膜晶体管（TFT）阵列;过渡金属二卤化物（TMDC）;

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