DataVXAdvanced Functional MaterialsPaper
journal article·2016-05

Monolayer MoS2 Dendrites on a Symmetry‐Disparate SrTiO3 (001) Substrate: Formation Mechanism and Interface Interaction

Yu Zhang, Qingqing Ji, Jinxiu Wen, Jiu Li, Cong Li, Jianping Shi, Xiebo Zhou, Kebin Shi, Huanjun Chen, Yuanchang Li, Shaozhi Deng, Ningsheng Xu, Zhongfan Liu, Yanfeng Zhang

Advanced Functional Materials· Volume 26· Issue 19
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Source abstract

Abstract

Dendritic patterns generated in non‐equilibrium growth processes are prevalent in nature while their formation mechanisms are far from fully understood. Here, we report a coverage‐dependent fractal degree evolution of monolayer 2H‐MoS2 dendrites synthesized on a symmetry‐disparate substrate of SrTiO3 (001). Surprisingly, various characterizations have revealed that the monolayer dendrites featured with orthogonal backbones are single crystalline, possessing both peculiar adlayer‐substrate interaction and abnormal indirect bandgap on SrTiO3 (001). Further theoretical calculations indicate that a prominent diffusion anisotropy of monomer precursors, combined with the disparate adlayer‐substrate symmetry, determine the diffusion‐limited aggregation of MoS2 towards dendritic shapes. This work provides brand‐new insights in the morphological engineering of two‐dimensional atomic crystals, and contributes greatly to an in‐depth understanding of the detailed dynamics in non‐equilibrium crystal growth.
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Research context

OpenAlex topics: 2D Materials and Applications · Perovskite Materials and Applications · Quantum Dots Synthesis And Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials Science and Engineering College of Engineering Peking University Beijing 100871 P. R. China

Center for Nanochemistry (CNC) Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering Academy for Advanced Interdisciplinary Studies Peking University Beijing 100871 P. R. China

State Key Laboratory of Optoelectronic Materials and Technologies and Guangdong Province Key Laboratory of Display Material and Technology School of Physics and Engineering Sun Yat‐sen University Guangzhou 510275 P. R. China

State Key Laboratory for Mesoscopic Physics Department of Physics Peking University Beijing 100871 P. R. China

National Center for Nanoscience and Technology Beijing 100190 P. R. China

Funding

National Natural Science Foundation of China · National Basic Research Program of China · Beijing Municipal Science and Technology Planning Project

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