课题组硕士生钟佳宏同学在国际纳米权威期刊Nano Research上发表论文

2021-07-13 09:55:55 387

课题组硕士生钟佳宏同学在国际纳米权威期刊Nano Research上发表论文

    近日，课题组成员钟佳宏同学在刘老师的指导下，以第一作者在国际纳米权威期刊《纳米研究》(Nano Research，影响因子10.269)上发表题为“PdSe2/MoSe2 vertical heterojunction for self-powered photodetector with high performance”(高性能自供电PdSe2/MoSe2 垂直异质结光电探测器)的实验论文。

图片关键词

  图一：基于PdSe2/MoSe2 垂直异质结光电探测器的图像识别

     二维 (2D) 材料范德华异质结构工程为多功能和高性能光电器件的设计提供了有效的策略。然而，具有光电导效应的二维异质结构光电探测器往往会受到高驱动源漏电压和显着暗噪声电流的影响。在这里，通过干转移方法制造了一种基于垂直堆叠的石墨烯(Gr)/PdSe2/MoSe2/Gr 异质结高性能的自供电光电探测器。该器件在黑暗中显示出电流整流特性（开/关比 > 103）和在光照下优异的光伏行为。此外，得益于强大的内置场，Gr/PdSe2/MoSe2/Gr 异质结光电探测器能够响应从可见光到近红外 (NIR) 的广泛光谱，具有 651 mA W-1 的显着响应率， 5.29×1011琼斯的高比检测率和41.7/62.5μs的快速响应速度。此外，通过反向电压（-1V）获得了 1.16A/W 的增强响应度，进一步对图像识别的评估也证明了Gr/PdSe2/MoSe2/Gr 异质结光电探测器的巨大应用潜力。预计这些发现将为开发用于综合应用的高灵敏度、高速和节能光电探测器带来新的机遇。

论文链接：https://link.springer.com/article/10.1007/s12274-021-3745-9

Comments:

  • The PdSe2/MoSe2 vertical heterojunction has shown promising results in self-powered photodetector applications. The combination of these two materials has resulted in a high-performance photodetector with improved sensitivity, response time, and stability compared to traditional photodetectors. The vertical heterojunction also allows for efficient charge separation and transfer, leading to enhanced photoresponse and performance.

  • This combination of materials has the potential to be used in a wide range of applications including medical imaging, optical communication, and remote sensing. The use of self-powered photodetectors can reduce the need for external power sources, making them more convenient and cost-effective for various applications.

  • In conclusion, the PdSe2/MoSe2 vertical heterojunction has shown to be a promising material system for self-powered photodetectors with high performance and potential for various applications. Further research is needed to fully understand its capabilities and potential for commercialization.