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Temperature Driven Phase Transition of Organic-Inorganic Halide Perovskite Single Crystals
- Authors
- Byun, Hye Ryung; Kim, Hyo In; Byun, Su Jeong; Park, Dae Young; Jeong, Mun Seok; Byeon, Clare Chisu
- Issue Date
- Dec-2018
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- Perovskite single crystal; Temperature-dependent absorption; Photoluminescence; Phase transition; Derivation of absorption spectrum fitting (DASF)
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, pp.1729 - 1734
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Start Page
- 1729
- End Page
- 1734
- ISSN
- 0374-4884
- Abstract
- Organic-inorganic halide perovskite single crystals undergo phase transition of being cubic, tetragonal, or orthorhombic depending on the temperature. We investigated the CH3NH3PbBr3−xIx single crystals grown by the inverse temperature crystallization method with temperature-dependent UV-Vis absorption and photoluminescence. From the temperature-dependent absorption measurement, the optical band gap is extracted by derivation of absorption spectrum fitting and Tauc plot. In our results, CH3NH3PbBr3−xIx single crystals show that an abrupt change in optical band gap, PL peak position and intensity appears around 120 K - 170 K regions, indicating the phase transition temperature.
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Related Researcher
- Jeong, Mun Seok
- COLLEGE OF NATURAL SCIENCES (DEPARTMENT OF PHYSICS)