在硅衬底上外延生长具有 IV 族二维层的 Ca(Ge1-xSnx)2

IF 2.3 4区物理与天体物理 Q3 PHYSICS, APPLIED

Applied Physics Express Pub Date : 2024-05-06 DOI:10.35848/1882-0786/ad3ee2

Takashi Yoshizaki, Tsukasa Terada, Yuto Uematsu, Takafumi Ishibe and Yoshiaki Nakamura

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引用次数: 0

摘要

二维（2D）材料作为一种前景广阔的热电材料备受关注。本研究确立了包括锗基二维层在内的第四族二维材料--Ca(Ge1-xSnx)2 晶体的形成方法。固相外延使我们能够在硅上形成外延 Ca(Ge1-xSnx)2。原子力显微镜显示 Ca(Ge1-xSnx)2 具有岛状结构。X 射线衍射证明了 Ca(Ge1-xSnx)2 岛状结构的外延生长以及随着 Sn 含量的增加而增加的 c 轴晶格常数。这种包括 IV 族二维层的新型金属间化合物的形成为高性能热电发生器/硅开辟了一条途径。

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Epitaxial growth of Ca(Ge1−xSnx)2 with group IV 2D layers on Si substrate

Two-dimensional (2D) material is drawing considerable attention as a promising thermoelectric material. This study establishes the formation method of renewed Ca-intercalated group IV 2D materials, Ca(Ge1−xSnx)2 crystals including germanene-based 2D layers. The solid phase epitaxy allows us to form epitaxial Ca(Ge1−xSnx)2 on Si. Atomic force microscopy reveals that the Ca(Ge1−xSnx)2 has island structures. X-ray diffraction proved the epitaxial growth of the Ca(Ge1−xSnx)2 island structures and the increase of the c-axis lattice constant with Sn content increase. The formation of this renewed intermetallic compound including group IV 2D layer opens an avenue for high performance thermoelectric generator/Si.

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来源期刊

Applied Physics Express 物理-物理：应用

CiteScore

4.80

自引率

8.70%

发文量

310

审稿时长

1.2 months

期刊介绍： Applied Physics Express (APEX) is a letters journal devoted solely to rapid dissemination of up-to-date and concise reports on new findings in applied physics. The motto of APEX is high scientific quality and prompt publication. APEX is a sister journal of the Japanese Journal of Applied Physics (JJAP) and is published by IOP Publishing Ltd on behalf of the Japan Society of Applied Physics (JSAP).