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arXiv · 1802.03003

Room-Temperature Quantum-Confined Stark Effect in Atomically Thin Semiconductor

Michael Engel·Mathias Steiner
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Abstract

Electric field-controlled, two-dimensional (2D) exciton dynamics in transition metal dichalcogenide monolayers is a current research focus in condensed matter physics. We have experimentally investigated the spectral and temporal properties of the A-exciton in a molybdenum diselenide (MoSe2) monolayer under controlled variation of a vertical, electric dc field at room temperature. By using steady-state and time-resolved photoluminescence spectroscopies, we have observed dc field-induced spectral shifts and linewidth broadenings that are consistent with the shortening of the exciton's non-radiative lifetime due to field-induced dissociation. We discuss the implications of the results for future developments in nanoscale metrology and exploratory, optoelectronics technologies based on layered, 2D semiconductors.

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Michael Engel, Mathias Steiner. 2018-02-08. Room-Temperature Quantum-Confined Stark Effect in Atomically Thin Semiconductor. https://doi.org/10.1117/12.2529461

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