Luminescence performance and vibronic behavior of Mn4+ -activated Ca14-x Kx Al10 Zn6 O35 deep-red phosphor.

Journal Article (Journal Article)

In this study, a significant improvement of deep-red luminescence was successfully achieved via the substitution approach in the M n 4+ -activated C a 14-x K x A l 10 Z n 6 O 35 phosphor. The optimal M n 4+ doping level x was determined by studying luminescence concentration quenching behavior. The measured photoluminescence (PL) spectrum showed five distinct vibronic structures with the main peak centered at 712 nm. A theoretical simulation work was conducted for comparison, and the predominant phonon mode involving in the vibronic transition process was revealed. From the temperature-dependent PL spectra, an abnormal luminescence enhancement was observed at the temperature rising from T =100 to 340 K, and the underlying phonon-assisted luminescence mechanism was theoretically disclosed. Finally, we studied the temperature-dependent luminescence lifetime, and the primary phonon energy in the vibronic behavior was identified from the fitting work.

Full Text

Duke Authors

Cited Authors

  • Zhang, L; Yang, Y; Tang, F; Xu, S; Wang, Z; Zheng, C; Ning, J; Tian, K

Published Date

  • December 2021

Published In

Volume / Issue

  • 46 / 23

Start / End Page

  • 5938 - 5941

PubMed ID

  • 34851928

Electronic International Standard Serial Number (EISSN)

  • 1539-4794

International Standard Serial Number (ISSN)

  • 0146-9592

Digital Object Identifier (DOI)

  • 10.1364/ol.446203


  • eng