Anisotropy of Photoluminescence in Layered Semiconductors ReS₂ and ReS₂:Au

Abstract:

The optical anisotropy properties of rhenium disulphide (ReS2) and Au-doped rhenium disulphide (ReS2:Au) have been investigated by polarization-dependent photoluminescence (PL). Because the excitonic transitions show strong polarization dependences in the near-infrared region, we used polarization-dependent PL measurements in the range between 0° and 180° to characterize the unique polarization property of ReS2 and ReS2:Au, and identify the origin of the excitonic transitions. It was observed that the variation in the amplitude of PL excitonic transitions with different polarization characteristics follows the Malus rule. In comparison with the undoped ReS2, the PL spectra of Au-doped sample show not only the main excitonic transitions near the direct band edge but also some extra transitions owing to the doping effects.

• Periodical: Solid State Phenomena (Volume 170)
• Pages: 135-138
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.170.135
• Online since: April 2011
• Authors: Der Yuh Lin, Tung Pai Huang, Fan Lei Wu, Chih Ming Lin, Ying Sheng Huang, Kwong Kau Tiong
• Keywords: Photoluminescence (PL), ReS₂

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