Metal halide perovskites (MHPs) have attracted a great deal of scholarly attention in the last few decades due to their unique properties and potential for photovoltaic and optoelectronic applications. The mechanical and electrical properties of MHPs are substantially affected by altering pressure and/or temperature. Near the phase transition pressure, these properties alter dramatically and a discontinuity in the Raman frequencies is observed. In this study, the Raman frequencies of the modes were calculated as a function of pressure (at room temperature) through the isothermal mode Grüneisen parameter for these modes by using the experimental volume data from the literature for CsPbI3. Moreover, I calculated the isothermal compressibility and the bulk modulus through the calculated Raman frequency shifts and isothermal Grüneisen parameter as a function of pressure for the orthorhombic and monoclinic phases of CsPbI3 at room temperature. The predicted Raman frequencies, isothermal Grüneisen parameter, isothermal compressibility, and the bulk modulus for the studied modes were compared with the experimental measurements below and above the orthorhombic and monoclinic phases.
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21 August 2020
Research Article|
August 20 2020
Pressure dependence of the Raman modes for orthorhombic and monoclinic phases of CsPbI3 at room temperature
Special Collection:
Hybrid Organic-Inorganic Halide Perovskites
Arzu Kurt
Arzu Kurt
a)
Department of Energy Management, Faculty of Applied Sciences, Çanakkale Onsekiz Mart University
, 17100 Canakkale, Turkey
a)Author to whom correspondence should be addressed: arzukurt@comu.edu.tr
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a)Author to whom correspondence should be addressed: arzukurt@comu.edu.tr
Note: This paper is part of the special collection on Hybrid Organic-Inorganic Halide Perovskites
J. Appl. Phys. 128, 075106 (2020)
Article history
Received:
May 01 2020
Accepted:
August 02 2020
Citation
Arzu Kurt; Pressure dependence of the Raman modes for orthorhombic and monoclinic phases of CsPbI3 at room temperature. J. Appl. Phys. 21 August 2020; 128 (7): 075106. https://doi.org/10.1063/5.0012355
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