The DOI matches its Crossref record; 56 of the 56 references it cites were found in a registry or an index.
Europium-Doped Lead-Free Cs 3 Bi 2 Br 9 Perovskite Quantum Dots and Ultrasensitive Cu 2+ Detection
Abstract
Pollution triggered by highly toxic heavy metal ions has become of worldwide critical concern; thus, it is urgent to develop an eco-friendly and nontoxic fluorescence probe for metal ions sensing. The lead-free all-inorganic perovskite quantum dots (PeQDs) could be ideal candidates but are limited by their low photoluminescence quantum yield (PLQY). In this work, we successfully fabricated Eu 3+ -doped lead-free Cs 3 Bi 2 Br 9 PeQDs employing a modified ligand-assisted reprecipitation method. The Cs 3 Bi 2 Br 9:Eu 3+ PeQDs demonstrate multicolor emissions including the exciton emission of the PeQDs and the 5 D 0 – 7 F J transition for Eu 3+ ion. Compared to the bare Cs 3 Bi 2 Br 9 PeQDs, the Eu 3+ -doped PeQDs display highly improved PLQY from 18% to ∼42.4% and excellent water stability. Finally, nontoxic and highly efficient Cs 3 Bi 2 Br 9:Eu 3+ PeQDs were employed as a highly sensitive fluorescent probe for Cu 2+ ion detection in water, which demonstrates a good linear range from 5 nM to 3 μM with a correlation coefficient of 0.996 and a low detection limit of 10 nM. Our work not only provides a new strategy to improve the optical performance of lead-free PeQDs but also expands their applications for metal ions sensing.
Overview
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
In the citing paper
“Based on their sensing mechanisms, perovskite optical sensors can be divided into ion exchange type, electron transfer type, and fluorescence resonance energy transfer (FRET) type (Figure 2) [13,[34][35][36][37][38][39][40][41][42].”
From Design Strategies and Emerging Applications of Perovskite-Based Sensors (2025) · cites this paper as [34]
In the citing paper
“This electron transfer affects the optical properties of the perovskite, such as absorption and emission spectra (Figure 2B) [34].”
From Design Strategies and Emerging Applications of Perovskite-Based Sensors (2025) · cites this paper as [34]
Citations
Cites
Proteşescu, L., Yakunin, S., Bodnarchuk, M. I., Krieg, F., Caputo, R., Hendon, C. H., Yang, R., Walsh, A., & Kovalenko, M. V. (2015) · Nano Letters · doi:10.1021/nl5048779 · Cited by 9,243
Brus, L. E. (1984) · The Journal of Chemical Physics · doi:10.1063/1.447218 · Cited by 5,151
Quantum Dot Light‐Emitting Diodes Based on Inorganic Perovskite Cesium Lead Halides (CsPbX 3 )
Song, J., Li, J., Li, X., Xu, L., Dong, Y., & Zeng, H. (2015) · Advanced Materials · doi:10.1002/adma.201502567 · Cited by 2,895
Li, X., Wu, Y., Zhang, S., Cai, B., Gu, Y., Song, J., & Zeng, H. (2016) · Advanced Functional Materials · doi:10.1002/adfm.201600109 · Cited by 2,558
Zhang, F., Zhong, H., Chen, C., Wu, X., Hu, X., Huang, H., Han, J., Zou, B., & Dong, Y. (2015) · ACS Nano · doi:10.1021/acsnano.5b01154 · Cited by 2,448
Synthesis and Optical Properties of Lead-Free Cesium Tin Halide Perovskite Nanocrystals
Jellicoe, T. C., Richter, J. M., Glass, H., Tabachnyk, M., Brady, R. A., Dutton, S. E., Rao, A., Friend, R. H., Credgington, D., Greenham, N. C., et al. (2016) · Journal of the American Chemical Society · doi:10.1021/jacs.5b13470 · Cited by 1,004
Doping Lanthanide into Perovskite Nanocrystals: Highly Improved and Expanded Optical Properties
Pan, G., Bai, X., Yang, D., Chen, X., Jing, P., Qu, S., Zhang, L., Zhou, D., Zhu, J., Xu, W., et al. (2017) · Nano Letters · doi:10.1021/acs.nanolett.7b04575 · Cited by 935
Self-citationLi, X., Cao, F., Yu, D., Chen, J., Sun, Z., Shen, Y., Zhu, Y. J., Wang, L., Wei, Y. M., Wu, Y., et al. (2017) · Small · doi:10.1002/smll.201603996 · Cited by 707
Li, S., Li, Y., Cao, J. J., Zhu, J. Y., Fan, L., & Li, X. (2014) · Analytical Chemistry · doi:10.1021/ac503183y · Cited by 564
Self-citationYao, J., Ge, J., Han, B., Wang, K., Yao, H., Yu, H.-L., Li, J.-H., Zhu, B., Song, J., Chen, C., et al. (2018) · Journal of the American Chemical Society · doi:10.1021/jacs.7b11955 · Cited by 553
Research works printed but not linked: 1
- 10.1016/j.elecom.2008.07.015 · DOI
Cited by
Sorted by citations
Low-dose real-time X-ray imaging with nontoxic double perovskite scintillators
Zhu, W., Ma, W., Su, Y., Chen, Z., Chen, X., Ma, Y., Bai, L., Xiao, W., Liu, T., Zhu, H., et al. (2020) · Light Science & Applications · doi:10.1038/s41377-020-00353-0 · Cited by 489
Self-citationLiu, Y., Rong, X., Li, M., Моlokeev, М. S., Zhao, J. W., & Xia, Z. (2020) · Angewandte Chemie International Edition · doi:10.1002/anie.202004562 · Cited by 336
Doping Lanthanide Ions in Colloidal Semiconductor Nanocrystals for Brighter Photoluminescence
Marin, R., & Jaque, D. (2020) · Chemical Reviews · doi:10.1021/acs.chemrev.0c00692 · Cited by 251
Review on Sensing Applications of Perovskite Nanomaterials
Shellaiah, M., & Sun, K. W. (2020) · Chemosensors · doi:10.3390/chemosensors8030055 · Cited by 229
Halide Double-Perovskite Semiconductors beyond Photovoltaics
Muscarella, L. A., & Hutter, E. M. (2022) · ACS Energy Letters · doi:10.1021/acsenergylett.2c00811 · Cited by 194
Metadata
- Authors
- Ding, N., Zhou, D., Pan, G., Xu, W., Chen, X., Li, D., Zhang, X., Zhu, J., Ji, Y., & Song, H.
- Affiliations
- Jilin University (CN)
- Corresponding author
- Xu, Wen
- Song, Hongwei
- Venue
- ACS Sustainable Chemistry & Engineering
- Publisher
- American Chemical Society (ACS)
- Published
- 2019-04-10
- Volume
- 7
- Issue
- 9
- Pages
- 8397-8404
- ISSN
- 2168-0485 (ISSN-L)
- OpenAlex
- W2935745262
- Cited by
- 171
- References
- 56
- Citations by year
- 2026: 13 · 2025: 20 · 2024: 27 · 2023: 22 · 2022: 32 · 2021: 21 · 2020: 32 · 2019: 4
- FWCI
- 8.00
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- ACS Sustainable Chemistry & Engineering (publishedVersion)
- Funders
- National Natural Science Foundation of China (11374127, 11504131, 11674127, 61674067, 81201738, 11304118)
- Natural Science Foundation of Jilin Province (20170520111JH)
- Ministry of Science and Technology of the People's Republic of China (2014CB643506, 2016YFC0207101)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Perovskite Materials and Applications
- Physical Sciences › Materials Science › Materials Chemistry › Quantum Dots Synthesis And Properties
- Physical Sciences › Materials Science › Materials Chemistry › Carbon and Quantum Dots Applications
- Keywords
- Cs3Bi2Br9, europium doping, Eu3+ luminescence, Cu2+ detection, fluorescent probes, ligand-assisted reprecipitation, photoluminescence quantum yield, water stability, heavy metal ion detection, multicolor emission
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
