The DOI matches its Crossref record; 44 of the 44 references it cites were found in a registry or an index.
Postsynthetic Surface Trap Removal of CsPbX3 (X = Cl, Br, or I) Quantum Dots via a ZnX2/Hexane Solution toward an Enhanced Luminescence Quantum Yield
Abstract
The control of surface properties of all inorganic cesium lead halide perovskite (CsPbX 3; X = Cl, Br, or I) quantum dots (QDs) is essential to achieve excellent stability and high photoluminescence quantum yields (PLQYs). Herein, a facile method was performed to simultaneously enhance the stability and PLQYs of CsPbX 3 QDs by a ZnX 2 /hexane solution post-treatment. We show that the halogen defect on the surface of CsPbX 3 QDs can be treated in a controlled way, whereby the “black dots” that adhered on the surface as observed by transmission electron microscopy have be completely removed, resulting in enhanced stability and photoluminescence. The PLQYs of CsPbCl 3, CsPbBr 3, and CsPbI 3 increased from 4, 58, and 63% to 86, 93, and 95%, respectively, and the origin of the “black dots” as well as their transformation mechanism has been demonstrated. As a result, the poly(dimethylsiloxane) composite films created by encapsulating stable and nearly defect-free green-emitting CsPbBr 3, the red-emitting K 2 SiF 6:Mn 4+ phosphor, and a blue emission GaN chip were prepared and used to fabricate a remote-type white light-emitting diode device, which exhibits a high luminescence efficiency (≤98 lm/W) and a wide color gamut (∼130% of the National Television Standard Committee standard), suggesting the potential for liquid crystal display backlight application.
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Synthesis and Characterization of Strongly Luminescing ZnS-Capped CdSe Nanocrystals
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Bandgap‐Tunable Cesium Lead Halide Perovskites with High Thermal Stability for Efficient Solar Cells
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Cited by
Ye, J., Byranvand, M. M., Martínez, C. O., Hoye, R. L. Z., Saliba, M., & Polavarapu, L. (2021) · Angewandte Chemie International Edition · doi:10.1002/anie.202102360 · Cited by 389
Metadata
- Authors
- Li, F., Liu, Y., Wang, H., Zhan, Q., Liu, Q., & Xia, Z.
- Venue
- Chemistry of Materials
- Publisher
- American Chemical Society (ACS)
- Published
- 2018-11-07
- Volume
- 30
- Issue
- 23
- Pages
- 8546-8554
- ISSN
- 0897-4756 (ISSN-L)
- 1520-5002
- OpenAlex
- W2899588918
- Cited by
- 339
- References
- 44
- FWCI
- 16.46
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Postsynthetic Surface Trap Removal of CsPbX3 (X = Cl, Br, or I) Quantum Dots via a ZnX2/Hexane Solution toward an Enhanced Luminescence Quantum Yield. https://app.cochat.ai/papers/10.1021/acs.chemmater.8b03442
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- Li, F., Liu, Y., Wang, H., Zhan, Q., Liu, Q., & Xia, Z. (2018). Postsynthetic Surface Trap Removal of CsPbX3 (X = Cl, Br, or I) Quantum Dots via a ZnX2/Hexane Solution toward an Enhanced Luminescence Quantum Yield. Chemistry of Materials. https://doi.org/10.1021/acs.chemmater.8b03442
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