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Dresden 2017 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 5: Focus Session: Two-dimensional materials I (joined session with TT)

HL 5.8: Vortrag

Montag, 20. März 2017, 12:15–12:30, POT 81

Optical Properties of WSe2 monolayers on metal films — •Laxmi Narayan Tripathi, Oliver Iff, Simon Betzold, Sven Hoefling, and Christian Schneider — Technische Physik and Wilhelm-Conrad-Roentgen Research Center for Complex Material Systems, Universitaet Wuerzburg, Wuerzburg, Am Hubland, D-97074 Germany

Single photon generation is essential for quantum communications. For efficient quantum communication devices, a core requirement are single photon sources which are stable, bright, and which can be replicated. Recently, quantum light emission from inorganic two dimensional layers of transition metal dichalcogenides (TMDC), such as WSe2, has been demonstrated.

In this contribution, we present our spectroscopy results from a metal-TMDC hybrid device. We performed low temperature (5K) photoluminescence measurement on a WSe2 monolayer transferred mechanically on metal surface and obtained stable and sharp emission features as compared to bare TMDC monolayer on dielectric substrate. The nanoscale metal surface sample were prepared in the group of Prof Dai-Sik Kim, Seoul National University, South Korea. We envisage that the results will find application in quantum photonics.

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