影像科学与光化学 ›› 2016, Vol. 34 ›› Issue (3): 273-280.DOI: 10.7517/j.issn.1674-0475.2016.03.273

• 论文 • 上一篇    下一篇

范德华外延生长硫化镉二维纳米片及其光致发光性能研究

朱丹丹, 夏静, 王磊, 李玄泽, 孟祥敏   

  1. 中国科学院 理化技术研究所 光化学与光功能材料重点实验室, 北京 100190
  • 收稿日期:2016-04-01 修回日期:2016-04-12 出版日期:2016-05-15 发布日期:2016-05-15
  • 通讯作者: 孟祥敏
  • 基金资助:

    国家重点基础研究发展规划973项目(2012CB932401)、中国科学院战略性先导科技专项(XDA09040203)资助

Van der Waals Epitaxy and Photoluminescence of Two-Dimensional CdS Nanoplates

ZHU Dandan, XIA Jing, WANG Lei, LI Xuanze, MENG Xiangmin   

  1. Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
  • Received:2016-04-01 Revised:2016-04-12 Online:2016-05-15 Published:2016-05-15

摘要:

二维纳米材料具有独特的结构和优异的性能,在电子学及光电子学领域有广泛的应用前景,但关于硫化镉二维纳米材料的制备及性能研究还鲜有报道。本文首次采用范德华外延生长技术,在氟金云母片衬底上制备了硫化镉二维纳米片。通过扫描电子显微镜、透射电子显微镜、原子力显微镜、X射线粉末衍射仪和拉曼光谱仪等分析手段对产物的形貌、厚度、晶体结构、成分等进行了系统的研究。结果表明,纳米片具有六方纤锌矿晶体结构,尺寸约为几个微米,厚度约为几十纳米。范德华外延生长技术在硫化镉二维单晶纳米片制备上的成功应用,为其它二维非层状材料的制备提供了新的思路,并使其在高性能电子和光电子器件上的应用成为了可能。

关键词: 范德华外延, 二维材料, 硫化镉, 非层状材料, 光致发光

Abstract:

Two-dimensional (2D) materials have been demonstrated for applications of electronic and optoelectronic devices due to their unique structures and excellent properties. Nevertheless, researches on 2D CdS materials have remained conspicuously absent. In this work, we present the first growth of 2D CdS nanoplates on mica substrates via van der Waals epitaxy. The morphology, thickness, structure and component of the products were systematically studied by scanning electron microscopy, transmission electron microscopy, atomic force microscopy, X-Ray powder diffraction and Raman spectroscopy. They all clearly indicate that the as-synthesized 2D nanoplates possess a single-crystalline hexagonal structure, and have a lateral size around several microns and height about several tens of nanometers. Our work may open up a new pathway for the synthesis of 2D nanostructures of other non-layered materials and make it possible for 2D non-layered materials to apply in high performance electronic and optoelectronic devices.

Key words: van der Waals epitaxy, two-dimensional materials, CdS, non-layerd materials, photoluminescence