Upconversion Red Emission and Near-Infrared Quantum-Cutting Persistent Luminescence of Nd3+-Activated Ca2SnO4Induced by Yb3+

Jing Xiang Zhang, Dejian Hou, Jin Yan Li, Huihong Lin, Rui Huang, Yi Zhang, Jianhua Hao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)

Abstract

In this work, we have investigated the near-infrared (NIR) photoluminescence, upconversion (UC), and long-lasting phosphorescence properties of Nd3+/Yb3+-doped Ca2SnO4 phosphors. Two-photon NIR quantum cutting (QC) luminescence is observed when the Nd3+-O2- charge-transfer band in Ca2SnO4:Nd3+, Yb3+ phosphors was excited, and the theoretical quantum yield is found to be close to 200%. More interestingly, the unique two-photon UC red emission under 808 nm laser diode excitation and NIR QC persistent luminescence can be realized only in Nd3+-Yb3+ codoped samples. The energy-transfer mechanism between Nd3+ and Yb3+ is revealed from the energy level structure and decay measurements. Different cross-relaxation schemes related to 2F5/2-2F7/2 of Yb3+ and f-f transition of Nd3+ are proposed. The results show that multifunctional luminescence properties are achieved in Nd3+-doped Ca2SnO4 with the introduction of Yb3+.

Original languageEnglish
Pages (from-to)19774-19780
Number of pages7
JournalJournal of Physical Chemistry C
Volume124
Issue number36
DOIs
Publication statusPublished - 10 Sep 2020

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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