期刊
OPTOELECTRONICS INSTRUMENTATION AND DATA PROCESSING
卷 55, 期 5, 页码 441-446出版社
SPRINGER
DOI: 10.3103/S8756699019050042
关键词
hybrid perovskites; structural phase transition; photoluminescence
资金
- Ministry of Education and Science of the Russian Federation [RFMEFI62117X0012]
- Ministry of Science and Science of the Russian Federation [0306-2019-0015]
The structure and photoluminescence of CH3NH3PbI3 (lead triiodide methylammonium) synthesized perovskite crystals are investigated in a wide temperature range. As temperature rises to 130-140 K, there is a junction from an orthorhombic to tetragonal crystal lattice with a change in the bandwidth. An increase in the stationary photoluminescence intensity at room temperature under the influence of exciting emission is revealed. A model explaining the observed growth of photoluminescence is proposed.
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