Raman and photoluminescence spectral studies in epitaxial Bi2NiMnO6 double perovskite thin-film samples

Raj, A and Kumar, M and Mishra, D and Anshul, A (2020) Raman and photoluminescence spectral studies in epitaxial Bi2NiMnO6 double perovskite thin-film samples. In: Optical Materials, 101 .

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Abstract

Raman spectroscopy, photoluminescence, and time-resolved spectroscopy measurement results are reported in the epitaxial Bi2NiMnO6 (BNMO) thin film, deposited via. pulse laser deposition (PLD) technique. Raman signature of the film confirms monoclinically distorted double perovskite structure and single-phase nature of film. Temperature-dependent Raman spectroscopy demonstrates an absence of structural phase change around ferromagnetic Curie temperature (TCM = 175K) and there are no significant phonon anomalies in the investigated temperature range. Photoluminescence (PL) spectroscopy study shows an optical bandgap of 3.4 eV at room temperature. Sample produces a highly efficient fluorescent green emission. Time-resolved photoluminescence spectra of BNMO thin films are also recorded for 360 nm wavelength excited at room temperature

Item Type:	Journal Article
Publication:	Optical Materials
Publisher:	Elsevier B.V.
Additional Information:	The copyright for this article belongs to the Elsevier B.V.
Keywords:	Bismuth compounds; Defects; Laser spectroscopy; Manganese compounds; Nickel compounds; Perovskite; Perovskite solar cells; Photoluminescence; Photoluminescence spectroscopy; Raman spectroscopy; Spectroscopic analysis, Double perovskite structures; Double perovskites; Pulse laser deposition; Spectral studies; Temperature range; Temperature-dependent Raman spectroscopies; Time-resolved photoluminescence spectrum; Time-resolved spectroscopy, Thin films
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	02 Feb 2023 04:08
Last Modified:	02 Feb 2023 04:08
URI:	https://eprints.iisc.ac.in/id/eprint/79698

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