期刊
NANO LETTERS
卷 17, 期 5, 页码 3195-3201出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.7b00754
关键词
GaN; nanosheets; template synthesis; HRTEM; optical property; gamma-Ga2O3
类别
资金
- Knowledge Innovation Program of Institute of Metal Research, Chinese Academy of Sciences [Y2NCA111A1, Y3NCA111A1]
- Basic Science Innovation Program of Shenyang National Laboratory for Materials Science [Y4NC6R1161]
- Youth Innovation Promotion Association, Chinese Academy of Sciences [Y4NC711171]
- National Torch Plan [2015GHA100042B00]
Crystalline GaN nanosheets hold great challenge in growth and promising application in optoelectronic nanodevices. In this work, we reported an accessible template approach toward the rational synthesis of GaN nanosheets through the nitridation of metastable gamma-Ga2O3 nanosheets synthesized from a hydrothermal reaction. The cubic gamma-Ga2O3 nanosheets with smooth surface and decent crystallinity can be directly converted into hexagonal GaN nanosheets with similar morphology framework and comparable crystal quality in NH3 at 850 degrees C. UV-vis spectrum measurement reveals that the GaN nanosheets show a band gap of 3.30 eV with strong visible absorption in the range of 370-500 nm. The template synthetic strategy proposed in this work will open up more opportunities for the achievement of a variety of sheetlike nanostructures that can not be obtained through conventional routines and will undoubtedly further promote the fundamental research of newly emerging sheetlike nanostructures and nanotechnology.
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