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arXiv · 1411.3850

Identification of 2H and 3R polytypes of MoS2 layered crystals using photoluminescence spectroscopy

S. Anghel·Yu. Chumakov·V. Kravtsov·A. Mitioglu·P. Plochocka·K. Sushkevich·G. Volodina·A. Colev·L. Kulyuk
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Abstract

The excitonic radiative recombination of intercalated Cl2 molecules for two different polytypes 2H-MoS2 and 3R-MoS2 layered crystals are presented. The structure of the excitonic emission is unique and provides a robust experimental signature of crystal polytype investigated. This result is confirmed by X-ray diffraction analysis and DFT electronic band structure calculations. Thus, the bound exciton emission provides a nondestructive fingerprint for the reliable identification of the polytype of MoS2 layered crystals.

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S. Anghel, Yu. Chumakov, V. Kravtsov, A. Mitioglu, P. Plochocka, K. Sushkevich, G. Volodina, A. Colev, L. Kulyuk. 2014-11-14. Identification of 2H and 3R polytypes of MoS2 layered crystals using photoluminescence spectroscopy. https://arxiv.org/abs/1411.3850

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