基于自支撑的MoS2-RGO-MoS2复合薄膜的悬浮型宽谱光电探测器研究

doi:10.7517/issn.1674-0475.210106

影像科学与光化学 ›› 2021, Vol. 39 ›› Issue (4): 497-503.DOI: 10.7517/issn.1674-0475.210106

基于自支撑的MoS₂-RGO-MoS₂复合薄膜的悬浮型宽谱光电探测器研究

王晨凤, 曹阳

北京信息科技大学仪器科学与光电工程学院, 北京 100192

收稿日期:2021-01-13 出版日期:2021-07-15 发布日期:2021-07-20
通讯作者: 曹阳
基金资助:
北京市自然科学基金面上项目（4192024）

Fully Suspended and Broad Spectral Photodetectors Based on Self-supported MoS₂-RGO-MoS₂ Composite Film

WANG Chenfeng, CAO Yang

School of Instrumentation Science and Opto-electronics Engineering, Beijing Information Science & Technology University, Beijing 100192, P. R. China

Received:2021-01-13 Online:2021-07-15 Published:2021-07-20

摘要/Abstract

摘要： 宽谱光电探测器旨在获取目标发射或反射的紫外、可见光、红外等各个波段的电磁波信息，用以在各种环境下准确地识别和分析目标，在成像、医学诊断、遥感、夜视、环境监测、人工智能等领域有广泛应用。本文将MoS₂的高效宽谱光吸收特性与RGO的高效输运特性相结合，设计并制备了悬浮型MoS₂-RGO-MoS₂光电探测器。MoS₂-RGO-MoS₂的独特结构，既能利用上表面的MoS₂吸收入射光，又能利用下表面的MoS₂吸收透射光，实现了两次光吸收，提高了探测器的响应率。MoS₂-RGO-MoS₂光电探测器和RGO光电探测器的对比研究发现，从紫外（375 nm）至近红外（1550 nm）的宽光谱范围内，MoS₂-RGO-MoS₂光电探测器的响应率均明显高于RGO光电探测器，最高可达1006 mA/W，对探测器的实际应用具有重要意义。

关键词: 宽谱, 光电探测器, RGO, MoS₂

Abstract: The broad spectral photodetector is designed to obtain the electromagnetic wave information of ultraviolet, visible and infrared bands, which are emitted or reflected by the target to accurately identify and analyze the target in various environments. The broad spectral photodetectors are widely used in imaging, medical diagnosis, remote sensing, night vision, environmental monitoring, and artificial intelligence fields. In this paper, a suspended MoS₂-RGO-MoS₂ photodetector is designed and fabricated by combining the high-efficiency and broad-spectrum optical absorption characteristics of MoS₂ with the high-efficiency transport characteristics of RGO. In the unique structure of MoS₂-RGO-MoS₂, the MoS₂ on the upper surface plays a role to absorb incident light, and the MoS₂ on the lower surface is able to absorb the transmitted light. This elegant design endows the detector with high-efficiency light capture and improved responsivity. The comparative study of MoS₂-RGO-MoS₂ photodetector and RGO photodetector shows that the responsivity of MoS₂-RGO-MoS₂ photodetector is significantly higher than that of RGO photodetector in a wide spectral range from UV (375 nm) to NIR (1550 nm). The highest responsivity of MoS₂-RGO-MoS₂ photodetector can reach 1006 mA/W and this is of great significance to the practical application of the detector.

Key words: broad-spectrum, photodetector, RGO, MoS₂

王晨凤, 曹阳. 基于自支撑的MoS₂-RGO-MoS₂复合薄膜的悬浮型宽谱光电探测器研究[J]. 影像科学与光化学, 2021, 39(4): 497-503.

WANG Chenfeng, CAO Yang. Fully Suspended and Broad Spectral Photodetectors Based on Self-supported MoS₂-RGO-MoS₂ Composite Film[J]. IMAGING SCIENCE AND PHOTOCHEMISTRY, 2021, 39(4): 497-503.

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基于自支撑的MoS₂-RGO-MoS₂复合薄膜的悬浮型宽谱光电探测器研究

Fully Suspended and Broad Spectral Photodetectors Based on Self-supported MoS₂-RGO-MoS₂ Composite Film

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