journal article·2022-10

Continuous Single‐Crystalline GaN Film Grown on WS2‐Glass Wafer

Yue Yin, Bingyao Liu, Qi Chen, Zhaolong Chen, Fang Ren, Shuo Zhang, Zhetong Liu, Rong Wang, Meng Liang, Jianchang Yan, Jingyu Sun, Xiaoyan Yi, Tongbo Wei, Junxi Wang, Jinmin Li, Zhongfan Liu, Peng Gao, Zhiqiang Liu

Small· Volume 18· Issue 41
Publisher page

Abstract

Abstract Use of 2D materials as buffer layers has prospects in nitride epitaxy on symmetry mismatched substrates. However, the control of lattice arrangement via 2D materials at the heterointerface presents certain challenges. In this study, the epitaxy of single‐crystalline GaN film on WS2‐glass wafer is successfully performed by using the strong polarity of WS2 buffer layer and its perfectly matching lattice geometry with GaN. Furthermore, this study reveals that the first interfacial nitrogen layer plays a crucial role in the well‐constructed interface by sharing electrons with both Ga and S atoms, enabling the single‐crystalline stress‐free GaN, as well as a violet light‐emitting diode. This study paves a way for the heterogeneous integration of semiconductors and creates opportunities to break through the design and performance limitations, which are induced by substrate restriction, of the devices.
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Research context

OpenAlex topics: GaN-based semiconductor devices and materials · 2D Materials and Applications · Ga2O3 and related materials

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

Affiliations

Research and Development Center for Semiconductor Lighting Technology Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 China

Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 China

Electron Microscopy Laboratory and International Center for Quantum Materials School of Physics Peking University Beijing 100871 China

Academy for Advanced Interdisciplinary Studies Peking University Beijing 100871 China

Beijing Graphene Institute (BGI) Beijing 100095 China

Center for Nanochemistry (CNC) Beijing Science and Engineering Center for Nanocarbons Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering Peking University Beijing 100871 China

College of Energy Soochow Institute for Energy and Materials Innovations Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies Soochow University Suzhou 215006 China

Funding

National Key Research and Development Program of China · National Natural Science Foundation of China

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