Temperature-dependent excitonic photoluminescence of hybrid organometal halide perovskite films
Type
ArticleKAUST Department
Advanced Nanofabrication, Imaging and Characterization Core LabCore Labs
Imaging and Characterization Core Lab
KAUST Solar Center (KSC)
Laboratory of Nano Oxides for Sustainable Energy
Material Science and Engineering Program
Physical Characterization
Physical Science and Engineering (PSE) Division
Date
2014-09-17Permanent link to this record
http://hdl.handle.net/10754/563239
Metadata
Show full item recordAbstract
Organometal halide perovskites have recently attracted tremendous attention due to their potential for photovoltaic applications, and they are also considered as promising materials in light emitting and lasing devices. In this work, we investigated in detail the cryogenic steady state photoluminescence properties of a prototypical hybrid perovskite CH3NH3PbI3-xClx. The evolution of the characteristics of two excitonic peaks coincides with the structural phase transition around 160 K. Our results further revealed an exciton binding energy of 62.3 ± 8.9 meV and an optical phonon energy of 25.3 ± 5.2 meV, along with an abnormal blue-shift of the band gap in the high-temperature tetragonal phase. This journal isCitation
Wu, K., Bera, A., Ma, C., Du, Y., Yang, Y., Li, L., & Wu, T. (2014). Temperature-dependent excitonic photoluminescence of hybrid organometal halide perovskite films. Phys. Chem. Chem. Phys., 16(41), 22476–22481. doi:10.1039/c4cp03573aSponsors
This work is supported by King Abdullah University of Science and Technology (KAUST).Publisher
Royal Society of Chemistry (RSC)Journal
Phys. Chem. Chem. Phys.PubMed ID
25247715ae974a485f413a2113503eed53cd6c53
10.1039/c4cp03573a
Scopus Count
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