Growth and temperature tuned band gap characteristics of NaBi(MoO4)2 single crystal

Date

2023-02-01

Author

Isik, M.
Guler, I.
Hasanlı, Nızamı

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Structural and optical properties of double sodium-bismuth molybdate NaBi(MoO4)2 semiconductor compound was investigated by x-ray diffraction, Raman and transmission experiments. From the x-ray diffraction experiments, the crystal that has tetragonal structure was obtained. Vibrational modes of the crystal were found from the Raman experiments. Transmission experiments were performed in the temperature range of 10-300 K. Derivative spectroscopy analysis and absorption spectrum analysis were performed to get information about the change in band gap energy of the crystal with temperature. It was observed that the band gap energies of the crystal at different temperatures obtained from these techniques are well consisted with each other. By the help of absorption spectrum which was obtained from transmission measurements performed at varying temperatures, absolute zero value of the band gap and average phonon energy as 3.03 ± 0.02 eV and E p h = 24 ± 0.2 meV, respectively. Moreover, based on absorption spectrum analysis the Urbach energy of the crystal was obtained as 0.10 eV.

Subject Keywords

NaBi(MoO4)2, NaBi(WO4)2, optical properties, optoelectronic applications

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85147324609&origin=inward
https://hdl.handle.net/11511/102262

Journal

Physica Scripta

DOI

https://doi.org/10.1088/1402-4896/acb4c3

Collections

Department of Physics, Article

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Citation Formats

M. Isik, I. Guler, and N. Hasanlı, “Growth and temperature tuned band gap characteristics of NaBi(MoO4)2 single crystal,” Physica Scripta, vol. 98, no. 2, pp. 0–0, 2023, Accessed: 00, 2023. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85147324609&origin=inward.