Abstract
The optical properties of Au-doped rhenium disulphide (ReS2:Au) have been investigated by temperature- and polarization-dependent piezoreflectance (PzR) measurements. In comparison with the undoped ReS2, ReS2:Au shows not only the main excitonic transitions of Eex 1, Eex 2, Eex 3, and Eex 4 near the direct band edge but also two extra transitions Eex A and Eex B owing to the doping effects. From temperaturedependent PzR spectra in the temperature range from 40 to 300 K, the least-squares fits are used to extract the parameters that describe the temperature variations of the band-edge excitonic transitions. The excitonic transitions show a strong polarization dependence in the near-infrared region. The polarization-dependent PzR measurement in the range between 0 and 180° was used to characterize the unique polarization property of ReS2:Au, and identify the origin of the excitonic transitions. However, the variation in the amplitude of PzR excitonic transitions with different polarization characteristics follows the Malus rule.
| Original language | English |
|---|---|
| Pages (from-to) | 523021-523025 |
| Number of pages | 5 |
| Journal | Japanese Journal of Applied Physics |
| Volume | 48 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2009 May 1 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
- Physics and Astronomy(all)
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Piezoreflectance study of band-edge excitons of res2:au. / Zheng, Jing Yao; Lin, Der-Yuh; Huang, Ying Sheng.
In: Japanese Journal of Applied Physics, Vol. 48, No. 5, 01.05.2009, p. 523021-523025.Research output: Contribution to journal › Article
TY - JOUR
T1 - Piezoreflectance study of band-edge excitons of res2:au
AU - Zheng, Jing Yao
AU - Lin, Der-Yuh
AU - Huang, Ying Sheng
PY - 2009/5/1
Y1 - 2009/5/1
N2 - The optical properties of Au-doped rhenium disulphide (ReS2:Au) have been investigated by temperature- and polarization-dependent piezoreflectance (PzR) measurements. In comparison with the undoped ReS2, ReS2:Au shows not only the main excitonic transitions of Eex 1, Eex 2, Eex 3, and Eex 4 near the direct band edge but also two extra transitions Eex A and Eex B owing to the doping effects. From temperaturedependent PzR spectra in the temperature range from 40 to 300 K, the least-squares fits are used to extract the parameters that describe the temperature variations of the band-edge excitonic transitions. The excitonic transitions show a strong polarization dependence in the near-infrared region. The polarization-dependent PzR measurement in the range between 0 and 180° was used to characterize the unique polarization property of ReS2:Au, and identify the origin of the excitonic transitions. However, the variation in the amplitude of PzR excitonic transitions with different polarization characteristics follows the Malus rule.
AB - The optical properties of Au-doped rhenium disulphide (ReS2:Au) have been investigated by temperature- and polarization-dependent piezoreflectance (PzR) measurements. In comparison with the undoped ReS2, ReS2:Au shows not only the main excitonic transitions of Eex 1, Eex 2, Eex 3, and Eex 4 near the direct band edge but also two extra transitions Eex A and Eex B owing to the doping effects. From temperaturedependent PzR spectra in the temperature range from 40 to 300 K, the least-squares fits are used to extract the parameters that describe the temperature variations of the band-edge excitonic transitions. The excitonic transitions show a strong polarization dependence in the near-infrared region. The polarization-dependent PzR measurement in the range between 0 and 180° was used to characterize the unique polarization property of ReS2:Au, and identify the origin of the excitonic transitions. However, the variation in the amplitude of PzR excitonic transitions with different polarization characteristics follows the Malus rule.
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U2 - 10.1143/JJAP.48.052302
DO - 10.1143/JJAP.48.052302
M3 - Article
AN - SCOPUS:68349097534
VL - 48
SP - 523021
EP - 523025
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 5
ER -