Investigation of Disruptive 2D/Silicon Technology for Hybrid Multispectral Photodetection

ongoing

My research ultimate goal is to develop novel approaches for multispectral detection in emerging 2D hybridsilicon technology and unify in one single technological platform high-performance photodetectors in all spectral bands from visible to mid-infrared. Theoretical and experimental methods will be applied to study new concepts and physical phenomena for broadband photodetection in integrated 2D/Silicon hybrids, aiming for innovative solutions, novel device architectures and disruptive technological development of multispectral photodetection systems-on-chip. A diversity of modern applications ranging from remote healthcare and environmental monitoring, gas sensing and hazard detection, food and water inspection to biosensing and automotive vision share similar urgent needs for high-performance, miniaturized and lightweight multispectral optical sensors monolithically integrated with low-cost and high-functionality silicon electronics. However, current semiconductor photodetectors technologies are mainly tailored and optimized to specific spectral bands. Their roadmaps have so far prevented the development of universal detectors that could simultaneously address multiple spectral domains. Thus, there is a pressing need for a radically new approach that could combine high-performance broadband photodetectors in all spectral bands in one single silicon-compatible technological platform. Graphene and 2D materials integration with silicon technology open an unprecedented opportunity to reach this goal, leveraging unique ultra-broadband absorption properties of graphene and diversity of 2D-family with mature silicon fabrication facilities for monolithically integrated, scalable and cost-effective multispectral imaging systems. The fundamental study, exploration, and technological development of novel 2D/Silicon multispectral PD technology beyond the state-of-the-art and increasing its potential impact on modern application domains is the core objective of the Proposal.