Yb³⁺ and Yb³⁺/Er³⁺ doping for near-infrared emission and improved stability of CsPbCl3 nanocrystals

Authors

Xiangtong Zhang, Jilin University
Yu Zhang, Jilin University
Xiaoyu Zhang, Jilin University
Wenxu Yin, Jilin University
Yu Wang, Jilin University
Hua Wang, Louisiana State University in Shreveport
Min Lu, Jilin University
Zhiyang Li, University of Massachusetts Lowell
Zhiyong Gu, University of Massachusetts Lowell
William W. Yu, Louisiana State University in Shreveport

Document Type

Article

Publication Date

1-1-2018

Abstract

© 2018 The Royal Society of Chemistry. Lead halide perovskite nanocrystals (NCs) exhibit excellent tunable emissions covering the entire visible spectral region, but they do not emit near-infrared (NIR) light. We synthesized rare earth element doped CsPbCl3 NCs for NIR emission. The Yb3+ doped CsPbCl3 NCs emitted strong 986 nm NIR light; the Yb3+/Er3+ co-doped CsPbCl3 NCs emitted at 1533 nm. The total photoluminescence quantum yield (PL QY) of the CsPbCl3 NCs changed from 5.0% to 127.8% upon incorporating 2.0% Yb3+, a factor of 25.6 times enhancement. The material's stability was tested under continuous ultraviolet (365 nm) irradiation. The doped CsPbCl3 NCs exhibited a better stability than the undoped one. The PL intensity of the undoped CsPbCl3 NCs dropped to 20% of the initial value in 27 h, while the doped one took 85 h.

Publication Source (Journal or Book title)

Journal of Materials Chemistry C

First Page

10101

Last Page

10105

Recommended Citation

Zhang, X., Zhang, Y., Zhang, X., Yin, W., Wang, Y., Wang, H., Lu, M., Li, Z., Gu, Z., & Yu, W. (2018). Yb³⁺ and Yb³⁺/Er³⁺ doping for near-infrared emission and improved stability of CsPbCl3 nanocrystals. Journal of Materials Chemistry C, 10101-10105. https://doi.org/10.1039/c8tc03957g