An innovative graphene/QDs photodetector for remote sensing

Yunfei Xu; Peng Wang; Xuguang Deng; Huaiyi Wang

doi:10.1117/12.2606023

24 November 2021 An innovative graphene/QDs photodetector for remote sensing

Yunfei Xu, Peng Wang, Xuguang Deng, Huaiyi Wang

Proceedings Volume 12065, AOPC 2021: Optical Sensing and Imaging Technology; 120651T (2021) https://doi.org/10.1117/12.2606023
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China

Abstract

Infrared imaging generally refers to the technology that takes radiation energy of the target itself as received signal and converts it into an image. We can obtain geometric characteristics as well as temperature characteristics of the target day and night by applying the infrared imaging technology as it can hardly be affected by illumination conditions and adverse weather, hence it is extremely important for both military and civil use. Since the combination of infrared and visible light imaging enables us to achieve the target information more comprehensively, the remote sensing cameras rapidly accomplished the transition from single pass to multipass, which allows them to obtain visible light and infrared images through different optical paths simultaneously. However, this imaging system greatly increased the volume, mass, power consumption and cost budgets. Here, we discussed an innovative graphene/QDs photodetector for remote sensing. As the bandgap of QDs is controllable through its size-dependence, its response spectrum could easily be modulated through the size control and ligand exchange¹, thus enables us to obtain a detector with response spectrum range from visible light to medium wave. And with the help of PMMA-assisted transfer processing², we can arrange the QDs with different response spectrum on purpose. Therefore, it is possible for us to customize the response spectrum for each pixel, and this truly enables the visible infrared integrated single pass imaging system and could generate a variety of strategies for remote sensing.

Citation Download Citation

Yunfei Xu, Peng Wang, Xuguang Deng, and Huaiyi Wang "An innovative graphene/QDs photodetector for remote sensing", Proc. SPIE 12065, AOPC 2021: Optical Sensing and Imaging Technology, 120651T (24 November 2021); https://doi.org/10.1117/12.2606023

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KEYWORDS

Infrared radiation

Infrared imaging

Sensors

Thermography

Infrared sensors

Visible radiation

Remote sensing

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