Personnel: Ju Ying Shang, Michael Moody, Jack Olding, Zhehao Zhu, Jason Kim
Collaborators: T. Marks, M. Hersam
Applications: novel logic devices, flexible electronics
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Topological Heterojunctions
Discontinuities in the thickness of
2-D materials produce electrical heterojunctions due to changes in band structure. These novel junctions are electrically active and can serve as a
foundation for new classes of devices. Gate tunable rectification and solar
energy conversion have been observed at thickness junctions in MoS2. SPCM was
used to investigate band offsets and power generation mechanisms.
S. L. Howell, D. Jariwala, C.-C. Wu, K.-S. Chen, V. K. Sangwan, J. Kang,
T. J. Marks, M. C. Hersam, and L. J. Lauhon. "Investigation of
Band-Offsets at Monolayer–Multilayer MoS2 Junctions by
Scanning Photocurrent Microscopy" Nano Letters. 15 (4), 2278 (2015).
| Mixed-Dimensional Heterostructures
Ultrathin
semiconductor heterojunctions formed from mixed dimensional materials provide
qualitatively novel types of device responses that can be exploited to design
new and more efficient types of circuits. SPCM is used to analyze the operating
principles of these devices in collaboration with the Hersam and
Marks groups.
D. Jariwala, S. L. Howell, K.-S. Chen, J. Kang, V. K. Sangwan, S.A. Filippone, R. Turrisi, T. J. Marks, L. J. Lauhon, and M. C. Hersam. "Hybrid, Gate-Tunable, van der Waals p-n Heterojunctions from Pentacene and MoS2" Nano Letters. 16 (1), 497 (2016)
| | Additional References |
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