Guest: Burkay Uzlu, AMO GmbH & RWTH Aachen University, Germany
Title: Advancing Electronics and Optoelectronics with 2D Materials: From Prototypes to Wafer-Scale Integration (Job Talk)
Date/Time: 7 May 2025, 13:40
Location: FENS G032
Abstract: Two-dimensional (2D) materials—such as graphene, MoS₂, WSe₂, and hBN—offer a unique combination of electrical, optical, and mechanical properties that position them as promising candidates for next-generation electronics and optoelectronics. Their atomically thin structure enables high carrier mobility, excellent electrostatic control, mechanical flexibility, and new device functionalities that go beyond what is achievable with conventional bulk semiconductors. These advantages have led to significant developments in flexible circuits, high-frequency RF components, and broadband photodetectors. Despite these breakthroughs at the device level, several challenges remain for industrial-scale adoption. Wafer-scale synthesis, low-defect transfer processes, contact and interface engineering, and compatibility with backend-of-line (BEOL) silicon CMOS technology are among the critical bottlenecks. In this talk, I will present recent progress in addressing these issues, including scalable fabrication of 2D FETs on flexible and rigid substrates, hybrid 2D/3D device architectures, and performance optimization through doping control and encapsulation strategies. Specific examples will include metal-insulator-graphene (MIG) diodes, MoS₂ and WSe₂-based CMOS inverters, and hybrid quantum dot/2D photodetectors. By discussing both the device-level innovations and the process integration roadmap, this presentation aims to provide a comprehensive perspective on how 2D materials are evolving from research prototypes toward practical applications in next generation electronic and photonic systems.
Bio: Burkay Uzlu (M) is a senior researcher in the Graphene Electronics group at AMO GmbH. He completed his Ph.D. at RWTH Aachen University, conducting research at the Chair of Electronic Devices, with a focus on 2D semiconductor-based electronic devices and their wafer-scale integration. Following his doctoral studies, he worked as a postdoctoral researcher at Northwestern University, advancing nano devices based on 2D materials. In 2022, he returned to RWTH Aachen University as a senior researcher. His current work focuses on the development and characterization of novel electronic and opto-electronic devices based on 2D materials, with an emphasis on scalable fabrication approaches.