二维层状In2Se3材料的快速制备及结构特性研究

摘要/Abstract

摘要： In₂Se₃二维层状材料具有优异的光电、热电和铁电特性。目前In₂Se₃二维层状材料大部分通过对化学气相输运(CVT)法制备的块体In₂Se₃进行机械剥离获得,CVT法制备工艺复杂、制备时间长、成本高,与之相比,布里奇曼(B-S)法具有制备工艺简单、制备效率高、成本低的优势。为此,本文对CVT法和B-S法制备的块体In₂Se₃分别进行了机械剥离,并转移到SiO₂/Si(111)基底,获得了相应的二维层状In₂Se₃样品。同时利用原子力显微镜(AFM)、激光拉曼和X射线衍射(XRD)对两样品进行表面形貌、晶格振动谱和结晶质量的测量,发现用B-S法制备、剥离的样品具有与CVT法制备、剥离样品几乎相同的表面原子级平整度和单晶结晶质量。本文为高质量二维层状In₂Se₃材料的获得提供了更为经济实用的途径。

关键词: In₂Se₃, 二维层状材料, 机械剥离, 化学气相输运法, 布里奇曼法

Abstract: In₂Se₃ 2D layered materials have excellent photoelectric, thermoelectric and ferroelectric properties. At present, most of the In₂Se₃ materials are obtained by mechanical exfoliation of bulk In₂Se₃ prepared by the complicated chemical vapor transport (CVT) method with long time and high cost. Compared with CVT method, the Bridgman (B-S) method has the advantages of simple preparation process, high efficiency and low cost. In this paper, the bulk In₂Se₃ prepared by CVT and B-S method were mechanically exfoliated and transferred to SiO₂/Si(111) substrates to obtain the corresponding two-dimensional layered In₂Se₃ samples. The surface morphology, lattice vibration spectrum and crystalline quality of both samples were also measured by atomic force microscopy (AFM), laser Raman and X-ray diffraction (XRD). The results show that the samples prepared and exfoliated by B-S method have almost the same surface atomic level flatness and single crystal crystalline quality as those prepared and exfoliated by CVT method. This paper provides a more economical and practical way to obtain high-quality two-dimensional layered In₂Se₃ materials.

Key words: In₂Se₃, two-dimensional layered material, mechanical exfoliation, chemical vapor transport method, Bridgman method

中图分类号:

O766
O484

俞书昕, 金泽辛, 陈容, 李韬, 祖翔宇, 吴海飞. 二维层状In₂Se₃材料的快速制备及结构特性研究[J]. 人工晶体学报, 2023, 52(10): 1787-1792.

YU Shuxin, JIN Zexin, CHEN Rong, LI Tao, ZU Xiangyu, WU Haifei. Rapid Preparation and Structural Characterization of Two-Dimensional Layered In₂Se₃ Materials[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2023, 52(10): 1787-1792.

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二维层状In₂Se₃材料的快速制备及结构特性研究

Rapid Preparation and Structural Characterization of Two-Dimensional Layered In₂Se₃ Materials

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