Liquid exfoliation of ethyl-terminated layered germanane
Liquid exfoliation of ethyl-terminated layered germanane
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DOI：
10.7567/1347-4065/ab1398
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发表时间：
2019-07
影响因子：
1.5
通讯作者：
H. Tachibana;N. Toda;N. Takada;T. Mizokuro;A. Ando;R. Azumi
中科院分区：
文献类型：
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作者：
H. Tachibana;N. Toda;N. Takada;T. Mizokuro;A. Ando;R. Azumi
我们用液体剥离法在氯苯中制备了乙基插层锗(GeET)的分散体，其浓度足以用于薄膜的制备。在固体衬底上沉积了横向尺寸为几微米的单层和几层GeEt，并用扫描电子显微镜对其进行了表征。用紫外-可见光谱、红外光谱和拉曼光谱研究了Geet分散体的物理性质和结构。分散过程的超声功率影响了锗片之间的层间距，也影响了GeEt分散体的光致发光。由GeET的氯苯分散体制成的流延膜器件在835 nm处观察到了电致发光。
We have fabricated dispersions of ethyl-intercalated germanane (GeEt) by a liquid exfoliation approach in chlorobenzene, with sufficient concentration for thin-film fabrication. Monolayers and a few layers of GeEt with lateral dimensions of a few micrometers were deposited from its dispersion onto a solid substrate and characterized with a scanning electron microscope. The physical properties and structures of the GeEt dispersions were investigated by UV–visible, FT-IR and Raman spectroscopies. The sonication power for the dispersion process affected the interlayer distance between germanium sheets, as well as the photoluminescence of GeEt dispersions. Electroluminescence was observed with a peak at 835 nm from a device with a cast film from the chlorobenzene dispersion of GeEt.