IMSE Seminar: "Heterogeneous integration of thin films and devices via 2D materials-assisted epitaxy"
Monday, February 17, 2025 1 PM to 1:50 PM
About this Event
6548 Forest Park Pkwy, St. Louis, MO 63112, USA
https://imse.wustl.edu/Heterogeneous integration of functional materials offers exciting new opportunities for advanced device platforms and functional systems. In this talk, I will introduce the integration of III-V and III-N compound semiconductors with 2D materials for electronics and optoelectronics.
I will first introduce three epitaxy techniques for synthesizing thin films on 2D materials; remote epitaxy, quasi-van der Waals epitaxy, and selective-area epitaxy [1,2]. I will discuss the challenges and prospects of each approach, in terms of the availability of materials, the quality of as-grown thin films, and the compatibility with various transfer and integration processes. Next, I will introduce new concepts of devices that can be achieved by these hetero-integration approaches. As a notable example, I will show full-color micro-LEDs for AR/VR applications [3]. The application for heterogeneously integrated silicon platforms and flexible electronics will also be discussed.
[1] Hyunseok Kim, Yunpeng Liu, Kuangye Lu, Celesta S. Chang, et al., and Jeehwan Kim, “High-throughput manufacturing of epitaxial membranes from a single wafer by 2D materials-based layer transfer process”, Nature Nanotechnology, 18(5), (2023), 464-470.
[2] Hyunseok Kim, Sangho Lee, Jiho Shin, et al., and Jeehwan Kim, “Graphene nanopattern as a universal epitaxy platform for single-crystal membrane production and defect reduction”, Nature Nanotechnology, 17(10), (2022), 1054-1059
[3] Jiho Shin, Hyunseok Kim, Suresh Sundaram, Junseok Jeong, et al., and Jeehwan Kim, “Vertical full-colour micro-LEDs via 2D materials-based layer transfer”, Nature, 614(7946), (2023), 81-87
Host: Dr. Sang-Hoon Bae