A Universal Optoelectronic Imaging Platform with Wafer-scale Integration of Two-dimensional Semiconductors
Xinyu WangDié WangYuchen TianJing GuoJinshui MiaoWeida HuHailu WangKang LiuLei ShaoSaifei GouXiangqi DongHesheng SuChuming ShengYuxuan ZhuZhejia ZhangJinshu ZhangQicheng SunZihan XuPeng ZhouHonglei ChenWenzhong Bao
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Photodetectors (PDs) are crucial in modern society, as they enable the detection of a diverse range of light-based signals. With the exponential increase in their development, materials are being used to create a wide range of PDs that play critical roles in enabling various applications and technologies. Image sensor technology has been hindered due to the lack of a universal system that can integrate all types of PDs with silicon-based readout integrated circuits (ROICs). To address this issue, we conducted experiments using two-dimensional materials as an example. We fabricated high-performance MoS2/MoTe2-based photodetectors and identified the most suitable ROICs to pair with them. This established a solid foundation for further research in the field of image sensors. We developed and implemented a versatile testing system that uses a printed circuit board to connect the PD and ROIC. After the ROIC generates the sampled signal, it is collected and processed by algorithms, which overcome device uniformity limitations and produce a high-quality image that is visible to the naked eye. This universal system can be used with a wide range of PD and ROIC types made from different materials, making it highly convenient for diverse testing applications and the development of diverse image sensor types. This robust new platform is expected to spur further innovation and advancements in this rapidly developing field.Cite
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Two-dimensional (2D) materials have attract increasing interest in the past few years because of their good photoelectric, thermal and mechanical properties. In this paper, the photodetector of the two-dimensional material is taken as the main research object, at the same time, four kinds of photodetectors based on two-dimensional materials and their research status are introduced in detail. The methods of increasing the light absorption rate and improving the preparation of twodimensional material are put forward to improve the performance of photodetector. We fabricated a photodetector demo by MoS2, and it shows a relatively high photoresponsivity and fast response time. Finally, the development prospect of two-dimensional material photodetector is prospected.
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