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Mechanisms of Ultrafast Charge Separation in a PTB7/Monolayer MoS2 van der Waals Heterojunction
Chengmei Zhong, Vinod K. Sangwan, Chen Wang +3
Mixed-dimensional van der Waals heterojunctions comprising polymer and twodimensional (2D) semiconductors have many characteristics of an ideal charge separation interface for opto…
Multi-Terminal Memtransistors from Polycrystalline Monolayer MoS2
Vinod K. Sangwan, Hong-Sub Lee, Hadallia Bergeron +4
In the last decade, a 2-terminal passive circuit element called a memristor has been developed for non-volatile resistive random access memory and has more recently shown promise f…
Valley-selective optical Stark effect probed by Kerr rotation
Trevor LaMountain, Hadallia Bergeron, Itamar Balla +3
The ability to monitor and control distinct states is at the heart of emerging quantum technologies. The valley pseudospin in transition metal dichalcogenide (TMDC) monolayers is a…
Mutual Photoluminescence Quenching and Photovoltaic Effect in Large-Area Single-Layer MoS2-Polymer Heterojunctions
Tejas A. Shastry, Itamar Balla, Hadallia Bergeron +3
Two-dimensional transition metal dichalcogenides (TMDCs) have recently attracted attention due to their superlative optical and electronic properties. In particular, their extraord…
Point Defects and Grain Boundaries in Rotationally Commensurate MoS2 on Epitaxial Graphene
Xiaolong Liu, Itamar Balla, Hadallia Bergeron +1
With reduced degrees of freedom, structural defects are expected to play a greater role in two-dimensional materials in comparison to their bulk counterparts. In particular, mechan…
Rotationally Commensurate Growth of MoS2 on Epitaxial Graphene
Xiaolong Liu, Itamar Balla, Hadallia Bergeron +3
Atomically thin MoS2/graphene heterostructures are promising candidates for nanoelectronic and optoelectronic technologies. Among different graphene substrates, epitaxial graphene…