Jump to main content
Jump to site search


Low temperature photoluminescence properties of CsPbBr3 quantum dots embedded in glasses

Author affiliations

Abstract

The photoluminescence properties of perovskite CsPbBr3 QDs embedded in glasses were investigated at cryogenic temperature in the range of 40–240 K. CsPbBr3 QDs with radii of 3.3 nm, 4.2 nm and 4.8 nm were precipitated in phosphate glasses using conventional thermal treatment. Photoluminescence (PL) integral intensities, bandgap energies and full with at half maximum of the PL bands of CsPbBr3 QDs showed a strong dependence on temperature. An exciton binding energy of ∼40 meV was derived from the temperature-dependent emission intensity. Optical phonon energy involved in the exciton–phonon interaction was found to be ∼56 meV, about three times as that of the single phonon energy. Exciton–phonon coupling strength and the lattice thermal expansion coefficient were strongly dependent on the size of CsPbBr3 QDs, and as a result, inflection temperature of the PL peak energies of CsPbBr3 QDs increased as the size increased.

Graphical abstract: Low temperature photoluminescence properties of CsPbBr3 quantum dots embedded in glasses

Back to tab navigation

Publication details

The article was received on 17 Apr 2017, accepted on 09 Jun 2017 and first published on 09 Jun 2017


Article type: Paper
DOI: 10.1039/C7CP02482G
Citation: Phys. Chem. Chem. Phys., 2017, Advance Article
  •   Request permissions

    Low temperature photoluminescence properties of CsPbBr3 quantum dots embedded in glasses

    B. Ai, C. Liu, Z. Deng, J. Wang, J. Han and X. Zhao, Phys. Chem. Chem. Phys., 2017, Advance Article , DOI: 10.1039/C7CP02482G

Search articles by author

Spotlight

Advertisements