高等学校化学学报 ›› 2025, Vol. 46 ›› Issue (3): 20240470.doi: 10.7503/cjcu20240470

• 物理化学 • 上一篇    下一篇

Cu-THQ薄膜的可控制备及其载流子迁移率调控

王龙盛, 李朝晖, 何漩, 李薇馨, 陈辉, 王大珩, 方伟, 杜星(), 赵雷()   

  1. 武汉科技大学先进耐火材料全国重点实验室,武汉 430081
  • 收稿日期:2024-10-18 出版日期:2025-03-10 发布日期:2024-12-17
  • 通讯作者: 杜星 E-mail:duxing@wust.edu.cn;zhaolei@wust.edu.cn
  • 作者简介:赵 雷, 男, 博士, 教授, 主要从事光电功能材料的合成及应用研究. E-mail: zhaolei@wust.edu.cn
  • 基金资助:
    国家自然科学基金(22105151);湖北省重点研发计划项目(2022BAA094);湖北省自然科学基金(2024AFB836)

Controllable Preparation and Carrier Mobility Regulation of Cu-THQ Thin Films

WANG Longsheng, LI Zhaohui, HE Xuan, LI Weixin, CHEN Hui, WANG Daheng, FANG Wei, DU Xing(), ZHAO Lei()   

  1. State Key Laboratory of Advanced Refractories,Wuhan University of Science and Technology,Wuhan 430081,China
  • Received:2024-10-18 Online:2025-03-10 Published:2024-12-17
  • Contact: DU Xing E-mail:duxing@wust.edu.cn;zhaolei@wust.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22105151);the Key Research Program of Hubei Province, China(2022BAA094);the Natural Science Foundation of Hubei Province, China(2024AFB836)

摘要:

利用化学气相沉积(CVD)方法制备了具有不同表面粗糙度的Cu-THQ(THQ=四羟基-1,4-苯醌-水合物)薄膜, 并研究了Cu-THQ薄膜的表面粗糙度、 分子π-π堆积程度与载流子迁移率之间的内在联系, 探索了CVD生长过程中温度对Cu-THQ薄膜载流子迁移率的调控机理. 结果表明, 热源附近的Cu-THQ-3薄膜中金属离子存在大量不饱和配位, 导致层间电荷斥力减弱, 形成更紧密的π-π堆积, 薄膜表现出更高的表面粗糙度和载流子迁移率, 此时, 霍尔效应迁移率达到4.10 cm2∙V-1∙s-1.

关键词: 导电金属有机框架, 化学气相沉积, 配位方式, π-π堆积, 霍尔效应载流子迁移率

Abstract:

In this paper, Cu-THQ(THQ=tetrahydroxy-1,4-benzoquinone) films with different surface roughness were prepared by chemical vapour deposition(CVD). The intrinsic relationship between the surface roughness, the degree of molecular π-π stacking and the carrier mobility for the Cu-THQ films was investigated. Meanwhile, the regulation mechanism of the temperature on the carrier mobility of Cu-THQ films was explored in the CVD growth process. The results show that a large number of unsaturated coordination sites exist in the metal ions of the Cu-THQ-3 film near the heat source, which leads to the weakening of the interlayer charge repulsion and the formation of tighter π-π stacking. As a result, the Cu-THQ-3 film exhibits higher surface roughness and carrier mobility, with the Hall effect mobility reaching 4.10 cm2∙V-1∙s-1. The temperature regulation of carrier mobility for the film is achieved by controlling the distance between the substrate and the heat source, providing a new opportunity for its implementation in practical devices.

Key words: Conductive metal-organic framework, Chemical vapour deposition, Coordination mode, π-π Stacking, Hall effect carrier mobility

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