About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
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Symposium
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Functional Nanomaterials: Functional Low-dimensional Materials (0D, 1D, 2D) Driving Innovations in Electronics, Energy, Sensors, and Environmental Engineering and Science 2021
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Presentation Title |
Two-dimensional Transition Metal Dichalcogenides for Optoelectronics and Chemiresistive Applications |
Author(s) |
Jungwook Choi |
On-Site Speaker (Planned) |
Jungwook Choi |
Abstract Scope |
Atomically thin, two-dimensional transition metal dichalcogenides (TMDCs) have attracted great interest as a new direct band gap semiconducting materials. Scalable integration and controllable modulation of properties of TMDCs are of fundamental importance to enable a wide range of future nanodevices. In this work, the modulation of the optoelectronic properties of TMDCs is demonstrated by interfacing them with phthalocyanine molecules. The photoluminescence emission can be selectively and reversibly engineered through electron transfer from photoexcited TMDCs to functionalized molecules. In addition, the emission spectral weight can also be modulated through the interaction with solvents exposed. Inspired by this environmental sensitivity of the TMDCs, highly sensitive, selective, and deformable chemical sensors are developed by heterogeneously integrating TMDCs and carbon nanotubes on cellulose paper in a scalable manner. The results demonstrated here could be further applicable to other 2D materials for future nanoscale electronics, sensors, and optoelectronic devices. |
Proceedings Inclusion? |
Planned: |