About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Advances in Emerging Electronic Nanomaterials: Towards Next-Generation Microelectronics
|
| Presentation Title |
Wafer-Scale 2D Semiconductors Integrated on Arbitrary Substrates for Emerging Optoelectronic Artificial Synapses with Flexoelectricity |
| Author(s) |
Yeonwoong Jung |
| On-Site Speaker (Planned) |
Yeonwoong Jung |
| Abstract Scope |
I will discuss my group’s recent efforts in manufacturing wafer-scale 2D transition metal dichalcogenide (TMD) layers on arbitrary substrates and exploring their opportunities in emerging technologies. Wafer-scale 2D TMD semiconducting layers are integrated on flexible polyamide (PIs) in two different approaches of direct growth and water-assisted delamination determined by their growth conditions. A number of unconventional devices are demonstrated with them, and two representative examples of optoelectronic synapses with flexoelectricity will be discussed. Specifically, 2D platinum diselenide (PtSe2) on PIs are demonstrated to exhibit a comprehensive set of synaptic characteristics originated from their wavelength tunable bi-directional photoconductivity; i.e. fully optical operation of potentiation/depression enabling basic logic functions even under mechanical bending. The devices are further demonstrated to realize bending orientation-dependent current modulations; i.e., current increase/decrease upon convex/concave bending, respectively. The observed phenomena are discussed based on the persistent photocurrent (PPC) effect and the bandgap modulating flexoelectricity of 2D PtSe2 layers. |