Rare-Earth-Based Perovskite Cs2AgScCl6:Bi for Strong Full Visible Spectrum Emission

Zhichao Zeng, Mingzi Sun, Shuai Zhang, Hongtu Zhang, Xiaomeng Shi, Shi Ye, Bolong Huang, Yaping Du, Chun Hua Yan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)

Abstract

Most luminescent materials can only emit light with a particular wavelength. In general, various phosphors with complementary spectral ranges are mixed to realize full-spectrum lighting. Therefore, the integration of luminescence at different wavebands in the single component matrix to obtain white emission is the optimal strategy for designing lighting materials. Thus, Sc-based double perovskite Cs2AgScCl6:xBi with adjustable free exciton and self-trapped exciton luminescence is synthesized by the vacuum evaporation assisted synthetic method. This perovskite can be used as white phosphor to assemble a high-quality white lighting device. Density functional theory calculations have revealed that the introduction of Bi optimizes the electron transfer and suppresses the defects in Cs2AgScCl6, which leads to excellent luminescent performance in a broad wavelength range. This work provides a new concept and strategy for the design and preparation of rare-earth optical perovskites in the future.

Original languageEnglish
Article number2204780
JournalAdvanced Functional Materials
DOIs
Publication statusAccepted/In press - 22 May 2022

Keywords

  • exciton regulating
  • excitonic luminescence
  • full spectra
  • rare-earth perovskites
  • white emissions

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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