Downshifting in Cs2NaBiCl6:Er3+: transforming ultraviolet into near infrared radiation

Anjun Huang; Chang-Kui Duan; Ka-Leung Wong; Peter A. Tanner

doi:10.1039/D1TC05587A

Downshifting in Cs2NaBiCl6:Er3+: transforming ultraviolet into near infrared radiation

Anjun Huang, Chang-Kui Duan, Ka-Leung Wong^*, Peter A. Tanner^*

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

17 Citations (Scopus)

Abstract

The outstanding assets of stability and non-toxicity have produced a surge of research interest into lead-free double perovskite halides for photovoltaic and optoelectronic applications. Here we report the near infrared (NIR) downshifting of micron and nanoparticle (NP)-size erbium-doped Cs2NaBiCl6 under ultraviolet excitation. The 1.54 nm emission of Er3+ is obtained by the population of the 4I13/2 level by an internal Er3+ temperature-dependent cross-relaxation process and also from bismuth energy transfer. The NIR emission can be switched from sharp to broad band by selective excitation. The doped NPs may be dispersed in organic solvents and the emission intensity can be tuned by choice of solvent.

Original language	English
Pages (from-to)	2950-2954
Number of pages	5
Journal	Journal of Materials Chemistry C
Volume	10
Issue number	8
Early online date	3 Feb 2022
DOIs	https://doi.org/10.1039/D1TC05587A
Publication status	Published - 28 Feb 2022

Scopus Subject Areas

Materials Chemistry
General Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1039/D1TC05587A

Cite this

@article{b7fc6bfd107d45b1922abebffb050fac,

title = "Downshifting in Cs2NaBiCl6:Er3+: transforming ultraviolet into near infrared radiation",

abstract = "The outstanding assets of stability and non-toxicity have produced a surge of research interest into lead-free double perovskite halides for photovoltaic and optoelectronic applications. Here we report the near infrared (NIR) downshifting of micron and nanoparticle (NP)-size erbium-doped Cs2NaBiCl6 under ultraviolet excitation. The 1.54 nm emission of Er3+ is obtained by the population of the 4I13/2 level by an internal Er3+ temperature-dependent cross-relaxation process and also from bismuth energy transfer. The NIR emission can be switched from sharp to broad band by selective excitation. The doped NPs may be dispersed in organic solvents and the emission intensity can be tuned by choice of solvent.",

author = "Anjun Huang and Chang-Kui Duan and Ka-Leung Wong and Tanner, {Peter A.}",

note = "Funding Information: This work was funded by Hong Kong Research Grants Council Research Grant 12300319 and the National Natural Science Foundation of China Grant 61635012. Ka-Leung Wong would like to thank the support from the Dr Mok Man Hung Endowed Professorship in HKBU Chemistry. Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

year = "2022",

month = feb,

day = "28",

doi = "10.1039/D1TC05587A",

language = "English",

volume = "10",

pages = "2950--2954",

journal = "Journal of Materials Chemistry C",

issn = "2050-7526",

publisher = "Royal Society of Chemistry",

number = "8",

}

TY - JOUR

T1 - Downshifting in Cs2NaBiCl6:Er3+

T2 - transforming ultraviolet into near infrared radiation

AU - Huang, Anjun

AU - Duan, Chang-Kui

AU - Wong, Ka-Leung

AU - Tanner, Peter A.

N1 - Funding Information: This work was funded by Hong Kong Research Grants Council Research Grant 12300319 and the National Natural Science Foundation of China Grant 61635012. Ka-Leung Wong would like to thank the support from the Dr Mok Man Hung Endowed Professorship in HKBU Chemistry. Publisher Copyright: © The Royal Society of Chemistry.

PY - 2022/2/28

Y1 - 2022/2/28

N2 - The outstanding assets of stability and non-toxicity have produced a surge of research interest into lead-free double perovskite halides for photovoltaic and optoelectronic applications. Here we report the near infrared (NIR) downshifting of micron and nanoparticle (NP)-size erbium-doped Cs2NaBiCl6 under ultraviolet excitation. The 1.54 nm emission of Er3+ is obtained by the population of the 4I13/2 level by an internal Er3+ temperature-dependent cross-relaxation process and also from bismuth energy transfer. The NIR emission can be switched from sharp to broad band by selective excitation. The doped NPs may be dispersed in organic solvents and the emission intensity can be tuned by choice of solvent.

AB - The outstanding assets of stability and non-toxicity have produced a surge of research interest into lead-free double perovskite halides for photovoltaic and optoelectronic applications. Here we report the near infrared (NIR) downshifting of micron and nanoparticle (NP)-size erbium-doped Cs2NaBiCl6 under ultraviolet excitation. The 1.54 nm emission of Er3+ is obtained by the population of the 4I13/2 level by an internal Er3+ temperature-dependent cross-relaxation process and also from bismuth energy transfer. The NIR emission can be switched from sharp to broad band by selective excitation. The doped NPs may be dispersed in organic solvents and the emission intensity can be tuned by choice of solvent.

UR - http://www.scopus.com/inward/record.url?scp=85125749014&partnerID=8YFLogxK

U2 - 10.1039/D1TC05587A

DO - 10.1039/D1TC05587A

M3 - Journal article

SN - 2050-7526

VL - 10

SP - 2950

EP - 2954

JO - Journal of Materials Chemistry C

JF - Journal of Materials Chemistry C

IS - 8

ER -

Downshifting in Cs2NaBiCl6:Er3+: transforming ultraviolet into near infrared radiation

Abstract

Scopus Subject Areas

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this