高等学校化学学报 ›› 2023, Vol. 44 ›› Issue (10): 20230217.doi: 10.7503/cjcu20230217

• 研究论文: 无机化学 • 上一篇    下一篇

基于高性能二维二硒化钨的光电探测器

刘翔宇1,2, 唐嘉琦1,2, 谭志富1, 潘曹峰1,2()   

  1. 1.中国科学院北京纳米能源与系统研究所, 北京 101400
    2.中国科学院大学纳米科学与工程学院, 北京 100049
  • 收稿日期:2023-04-28 出版日期:2023-10-10 发布日期:2023-05-22
  • 通讯作者: 潘曹峰 E-mail:pancaofeng@ucas.ac.cn
  • 基金资助:
    国家自然科学基金(52250398)

High-performance Two-dimensional Tungsten Diselenide-based Photodetector

LIU Xiangyu1,2, TANG Jiaqi1,2, TAN Zhifu1, PAN Caofeng1,2()   

  1. 1.Beijing Institute of Nanoenergy and Nanosystems,Chinese Academy of Sciences,Beijing 101400,China
    2.School of Nanoscience and Technology,University of Chinese Academy of Sciences,Beijing 100049,China
  • Received:2023-04-28 Online:2023-10-10 Published:2023-05-22
  • Contact: PAN Caofeng E-mail:pancaofeng@ucas.ac.cn
  • Supported by:
    the National Natural Science Foundation of China(52250398)

摘要:

通过物理气相沉积(PVD)方法制备了二维二硒化钨(WSe2)材料, 并与利用化学气相沉积(CVD)方法制备的材料进行对比, 证明了其具有不同的导电类型和更好的电学性质. 利用两种不同工艺所得材料分别为 p型和n型导电的性质, 制备了由同种WSe2材料组成的pn结器件. 测试结果表明, 该器件在黑暗条件下具有单向整流性和对光照极灵敏的响应度, 证明了其在光电器件应用领域具有广泛的发展前景.

关键词: 二维二硒化钨, 物理气相沉积, pn结, 光电探测器

Abstract:

Two-dimensional transition-metal dichalcogenides(TMDs) have gained widespread attention in the research field of nano-photodetectors. In this work, two-dimensional tungsten diselenide(WSe2) materials were prepared by physical vapor deposition(PVD). Different conductivity types and better electrical properties were demonstrated by comparison with materials prepared by chemical vapor deposition(CVD) methods. Meanwhile, a pn junction device composed of the same WSe2 material was prepared by using the properties of p-type and n-type conductivity of the materials obtained by two different processes. The test has proved that the device has unidirectional rectification under dark conditions and extremely sensitive response to light, which proves that WSe2 has broad development prospects in the field of optoelectronic device applications.

Key words: Two-dimensional WSe2, Physical vapor deposition, pn Junction, Photodetector

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