Chemosensors (Sep 2022)

Thermal, Physical, and Optical Properties of the Solution and Melt Synthesized Single Crystal CsPbBr<sub>3</sub> Halide Perovskite

  • Kirti Agrawal,
  • Syed Mohammad Abid Hasan,
  • Joanna Blawat,
  • Nishir Mehta,
  • Yuming Wang,
  • Rafael Cueto,
  • Miriam Siebenbuerger,
  • Orhan Kizilkaya,
  • Narasimha S. Prasad,
  • James Dorman,
  • Rongying Jin,
  • Manas Ranjan Gartia

DOI
https://doi.org/10.3390/chemosensors10090369
Journal volume & issue
Vol. 10, no. 9
p. 369

Abstract

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Inorganic lead-halide perovskite, cesium lead bromide (CsPbBr3), shows outstanding optoelectronic properties. Both solution- and melt-based methods have been proposed for CsPbBr3 crystal growth. The solution-based growth was done at low-temperature, whereas the melt-based growth was done at high-temperature. However, the comparison of optical, physical, and defect states using these two different growth conditions has been scarcely studied. Here, we have compared the thermal and optical properties of solution-grown and melt-grown single crystals of CsPbBr3. Positron Annihilation Lifetime Spectroscopy (PALS) analysis showed that melt-grown crystal has a relatively smaller number of defects than the chemical synthesis method. In addition, crystals grown using the chemical method showed a higher fluorescence lifetime than melt-grown CsPbBr3.

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