...
首页> 外文期刊>Journal of Materials Chemistry, C. materials for optical and electronic devices >Synergistic UV and humidity response of flexible MoS2/Kapton heterointerfaces via photogenerated charge transfer
【24h】

Synergistic UV and humidity response of flexible MoS2/Kapton heterointerfaces via photogenerated charge transfer

机译:通过光生电电荷转移,柔性MOS2 / Kapton异助食物的协同紫外线和湿度响应

获取原文
获取原文并翻译 | 示例
           

摘要

Realization of high-performance optoelectronic and gaseous sensing with excellent mechanical flexibility may open up broad multifunctional applications, such as wearable smart sensor systems, robust environmental/infrastructure monitoring, and personal health monitoring with human-friendly interfaces. Here, we proposed a flexible MoS2/Kapton sensor with synergistic optical UV and humidity functionalities. Because of its ultrathin monolayer, the electrical transport of the 2D MoS2 channel tends to be affected by both the surface and interface states. The photogenerated charge transfer plays a synergistic role in both the UV and humidity sensing by utilizing band alignment engineering. On the one hand, the photoabsorbing Kapton substrate forms a photogating heterointerface with the 2D MoS2 monolayer to greatly strengthen the photogenerated charge transfer. Under 325 nm UV photoexcitation, the flexible MoS2/Kapton sensor has achieved a best photocurrent to dark current ratio of 3.87 x 10(5). On the other hand, the 2D MoS2 monolayer has a large surface area for the effective adsorption of water molecules. The UV photogenerated charge transfer is beneficial to boost up the relative humidity (RH) response range above 10(5) for humidity sensing. As a result, flexible MoS2/Kapton heterointerfaces enable high-performance multifunctional sensing for promising 2D/3D heterogeneous integration.
机译:实现具有良好机械灵活性的高性能光电和气体传感可能会打开广泛的多功能应用,例如可穿戴智能传感器系统、强大的环境/基础设施监测,以及具有人性化界面的个人健康监测。在这里,我们提出了一种具有协同光学紫外和湿度功能的柔性MoS2/Kapton传感器。由于其超薄的单层结构,2D MoS2通道的电输运往往受到表面态和界面态的影响。利用能带对准技术,光生电荷转移在紫外和湿度传感中发挥协同作用。一方面,光吸收Kapton衬底与2D MoS2单分子膜形成光选通异质界面,从而大大增强光生电荷转移。在325nm紫外光激发下,柔性MoS2/Kapton传感器实现了3.87 x 10(5)的最佳光电流与暗电流比。另一方面,2D MoS2单分子膜具有较大的表面积,可有效吸附水分子。紫外光产生的电荷转移有助于提高湿度传感的相对湿度(RH)响应范围10(5)以上。因此,灵活的MoS2/Kapton异质接口使高性能多功能传感成为可能,实现了2D/3D异构集成。

著录项

  • 来源
  • 作者单位

    Univ Sci &

    Technol Beijing Beying Key Lab Magneto Photoelect Composite &

    Int Sch Math &

    Phys 30 Xueyuan Rd Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing Beying Key Lab Magneto Photoelect Composite &

    Int Sch Math &

    Phys 30 Xueyuan Rd Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing Beying Key Lab Magneto Photoelect Composite &

    Int Sch Math &

    Phys 30 Xueyuan Rd Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing Beying Key Lab Magneto Photoelect Composite &

    Int Sch Math &

    Phys 30 Xueyuan Rd Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing Beying Key Lab Magneto Photoelect Composite &

    Int Sch Math &

    Phys 30 Xueyuan Rd Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing Beying Key Lab Magneto Photoelect Composite &

    Int Sch Math &

    Phys 30 Xueyuan Rd Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing Beying Key Lab Magneto Photoelect Composite &

    Int Sch Math &

    Phys 30 Xueyuan Rd Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing Beying Key Lab Magneto Photoelect Composite &

    Int Sch Math &

    Phys 30 Xueyuan Rd Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing Beying Key Lab Magneto Photoelect Composite &

    Int Sch Math &

    Phys 30 Xueyuan Rd Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing Beying Key Lab Magneto Photoelect Composite &

    Int Sch Math &

    Phys 30 Xueyuan Rd Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing Beying Key Lab Magneto Photoelect Composite &

    Int Sch Math &

    Phys 30 Xueyuan Rd Beijing 100083 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 物理化学(理论化学)、化学物理学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号