arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.11410cond-mat.mtrl-sci
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一维过渡金属碲化物在碳纳米管中的高效生长与表征

Efficient Growth and Characterization of One Dimensional Transition Metal Tellurides Inside Carbon Nanotubes

Naoyuki Kanda, Yusuke Nakanishi, Dan Liu, Zheng Liu, Tsukasa Inoue, Yasumitsu Miyata, David Tomanek, Hisanori Shinohara

摘要:

原子薄的一维(1D)范德华线的过渡金属monochalocogenides(TdR)已被预期为集成纳米电子学的有前途的构建块。虽然在过去的几十年里,科学家们一直无法可靠地生产TMM纳米线,但我们最终展示了在碳纳米管(CNT)内自下而上制造MoTe纳米线的方法。尽管如此,目前的合成方法是基于反应性MoTe2的真空退火,并限制了对各种TdR的访问。在这里,我们报告了一个扩展的框架,高产率合成的一维碲化物,包括WTe,一个前所未有的家庭的碲。实验和理论分析表明,选择合适的金属氧化物作为前体提供了有用的产率为他们的表征。这些TMM纳米线在可见光区域表现出显著的光吸收。更重要的是,可以通过封装不同的TMM纳米线来调节CNT的电子性质。

英文摘要:

Atomically thin one dimensional (1D) van der Waals wires of transition metal monochalocogenides (TMMs) have been anticipated as promising building blocks for integrated nanoelectronics. While reliable production of TMM nanowires has eluded scientists over the past few decades, we finally demonstrated a bottom up fabrication of MoTe nanowires inside carbon nanotubes (CNTs). Still, the current synthesis method is based on vacuum annealing of reactive MoTe2, and limits access to a variety of TMMs. Here we report an expanded framework for high yield synthesis of the 1D tellurides including WTe, an unprecedented family of TMMs. Experimental and theoretical analyses revealed that the choice of suitable metal oxides as a precursor provides useful yield for their characterization. These TMM nanowires exhibit a significant optical absorption in the visible light region. More important, electronic properties of CNTs can be tuned by encapsulating different TMM nanowires.

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