Jump to main content
Jump to site search

Issue 27, 2018
Previous Article Next Article

Effectively realizing broadband spectral conversion of UV/visible to near-infrared emission in (Na,K)Mg(La,Gd)TeO6:Mn4+,Nd3+,Yb3+ materials for c-Si solar cells via efficient energy transfer

Author affiliations

Abstract

In this work, a series of (Na,K)Mg(La,Gd)TeO6:Mn4+,Nd3+,Yb3+ materials were prepared via a high-temperature solid-state reaction method. As reported before, certain Mn4+ singly doped samples present good red luminescence properties, showing emission bands at around 700 nm upon excitation with UV/n-UV/blue light. When Mn4+ and Nd3+ were co-doped into the same host, effective energy transfer from Mn4+ to Nd3+ ions was inferred from the spectral overlap of the Mn4+ emission and Nd3+ excitation bands. The variation of the emission bands upon 365 nm UV excitation with fixed Mn4+ concentration and varying Nd3+ concentration in phosphors can validate this energy transfer process from Mn4+ to Nd3+ ions. In addition, comparison of the excitation spectra monitored at the Nd3+ emission peaks to those monitored at the Mn4+ emission bands and the decrease of the Mn4+ decay times supplied more evidence for the energy transfer phenomenon from Mn4+ to Nd3+ ions in these Mn4+,Nd3+ co-doped samples. Since the energy transfer from Nd3+ to Yb3+ ions has been well reported before, we co-doped Yb3+ in our Mn4+,Nd3+ co-doped samples to show that Nd3+ can be a bridging ion to regulate the energy transfer from Mn4+ to Yb3+ ions for the first time, which was confirmed from the analysis of the excitation spectra and decay times. This can be considered as a novel method to enhance the energy transfer from Mn4+ to Yb3+ ions. Based on the energy transfer from Mn4+ to Nd3+ and then to Yb3+, UV/visible luminescence can be effectively converted into near-infrared emission, allowing a better spectral response for c-Si solar cells, which suggests a possible enhancement of the conversion efficiency of such c-Si solar cells.

Graphical abstract: Effectively realizing broadband spectral conversion of UV/visible to near-infrared emission in (Na,K)Mg(La,Gd)TeO6:Mn4+,Nd3+,Yb3+ materials for c-Si solar cells via efficient energy transfer

Back to tab navigation

Supplementary files

Article information


Submitted
27 Apr 2018
Accepted
12 Jun 2018
First published
15 Jun 2018

J. Mater. Chem. C, 2018,6, 7302-7310
Article type
Paper

Effectively realizing broadband spectral conversion of UV/visible to near-infrared emission in (Na,K)Mg(La,Gd)TeO6:Mn4+,Nd3+,Yb3+ materials for c-Si solar cells via efficient energy transfer

K. Li and R. Van Deun, J. Mater. Chem. C, 2018, 6, 7302
DOI: 10.1039/C8TC02019A

Social activity

Search articles by author

Spotlight

Advertisements