TY - JOUR
T1 - Assessment of the anharmonic phonon decay, Fröhlich interactions, and phonon lifetime in Zn0.98Mn0.02S thin films through temperature-dependent Raman spectroscopy
AU - Ganesha Krishna, V. S.
AU - Mahesha, M. G.
N1 - Funding Information:
V. S. Ganesha Krishna is thankful to the Department of Science and Technology India (DST India) for providing INSPIRE fellowship through Grant Number IF190268. The authors would like to acknowledge Manipal Academy of Higher Education, Manipal, for providing the fundings to avail the characterization facilities. The authors are thankful to SAIF, BITS Pilani Goa, for providing the Raman facility.
Funding Information:
V. S. Ganesha Krishna is thankful to the Department of Science and Technology India (DST India) for providing INSPIRE fellowship through Grant Number IF190268. The authors would like to acknowledge Manipal Academy of Higher Education, Manipal, for providing the fundings to avail the characterization facilities. The authors are thankful to SAIF, BITS Pilani Goa, for providing the Raman facility.
Publisher Copyright:
© 2023 John Wiley & Sons Ltd.
PY - 2023/4
Y1 - 2023/4
N2 - This report accounts for the occurrence of the temperature-induced variation in the phonon properties and the spatial variation in the Raman spectra for the spray-deposited Zn0.98Mn0.02S thin films. The study of the temperature dependence of the Raman line position, line width, and the phonon lifetime using the theoretical models that consider the thermal expansion and three- and four-phonon anharmonic effects is the novelty of this work. The lifetime of the LO phonon in Zn0.98Mn0.02S thin film was as low as 0.234 ps, indicating material suitability for optical limiting applications. The intensity ratio I2LO/I1LO ranges within 0.5 at most of the (x, y) positions in the Raman mapping data, indicating the nanocrystalline nature of Zn0.98Mn0.02S.
AB - This report accounts for the occurrence of the temperature-induced variation in the phonon properties and the spatial variation in the Raman spectra for the spray-deposited Zn0.98Mn0.02S thin films. The study of the temperature dependence of the Raman line position, line width, and the phonon lifetime using the theoretical models that consider the thermal expansion and three- and four-phonon anharmonic effects is the novelty of this work. The lifetime of the LO phonon in Zn0.98Mn0.02S thin film was as low as 0.234 ps, indicating material suitability for optical limiting applications. The intensity ratio I2LO/I1LO ranges within 0.5 at most of the (x, y) positions in the Raman mapping data, indicating the nanocrystalline nature of Zn0.98Mn0.02S.
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U2 - 10.1002/jrs.6498
DO - 10.1002/jrs.6498
M3 - Article
AN - SCOPUS:85146363554
SN - 0377-0486
VL - 54
SP - 446
EP - 452
JO - Journal of Raman Spectroscopy
JF - Journal of Raman Spectroscopy
IS - 4
ER -