Interlayer-Decoupled Sc-Based Mxene with High Carrier Mobility and Strong Light-Harvesting Ability,The Journal of Physical Chemistry Letters

当前位置： X-MOL 学术 › J. Phys. Chem. Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Interlayer-Decoupled Sc-Based Mxene with High Carrier Mobility and Strong Light-Harvesting Ability
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2018-11-24 00:00:00 , DOI: 10.1021/acs.jpclett.8b03077
Liujiang Zhou _{1,

2} , Yu Zhang ₁ , Zhiwen Zhuo ₃ , Amanda J. Neukirch ₁ , Sergei Tretiak _{1,

2,

4}

Affiliation

Two-dimensional (2D) van der Waals (vdW) layered materials offer a unique combination of electronic and structural properties attractive for technological applications. Most of them show strong vdW interactions, which lead to interlayer-coupled optoelectronic properties due to quantum confinement. Here we present a systematic computational study of one Mxene, 2D double-metal-layered scandium chloride carbides (Sc₂CCl₂). Unlike conventional quantum-confined nanosystems, 2D Sc₂CCl₂ exhibits weak vdW interactions with robust interlayer-decoupled optoelectronic properties and extremely high and anisotropic carrier mobilities of about 1–4.5 × 10⁴ cm² V^–1 s^–1 that consequently produce comparatively large drain currents. Specifically, the 2D Sc₂CCl₂ family has strong light-harvesting ability and could be utilized as efficient donor materials in excitonic solar cells. Overall, in combination with high structural stability against ambient conditions, interlayer-decoupled robust optoelectronic properties potentially relax the requirements for the fabrication of high-quality monolayers and for selection of suitable substrates and suggest promising next-generation optoelectronic applications.

中文翻译：

具有高载流子迁移率和强光收集能力的层间解耦的Sc基二甲苯

二维（2D）范德华（vdW）分层材料提供了电子和结构特性的独特组合，对技术应用具有吸引力。它们中的大多数显示出很强的vdW相互作用，这由于量子限制而导致层间耦合的光电特性。在这里，我们介绍一种Mxene，2D双金属层氯化scan碳化物（Sc ₂ CCl ₂）的系统计算研究。与传统的量子受限纳米系统不同，二维Sc ₂ CCl ₂表现出弱的vdW相互作用，具有强大的层间去耦光电性能以及极高的各向异性和各向异性，约1–4.5×10 ⁴ cm ² V ^–1 s的载流子迁移率^–1会产生较大的漏极电流。具体而言，2D Sc ₂ CCl ₂家族具有很强的聚光能力，可以用作激子太阳能电池中的有效供体材料。总的来说，与对环境条件的高结构稳定性相结合，层间去耦的强大光电性能可能会放松对高质量单层薄膜的制造以及对合适衬底的选择的要求，并提出有希望的下一代光电应用。

更新日期：2018-11-24

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11