Multi-luminescent center integrated metal-organic frameworks for high-performance white light-emitting diodes
Journal of Materials Chemistry C, ISSN: 2050-7534, Vol: 12, Issue: 3, Page: 1047-1054
2023
- 5Citations
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Article Description
The development of multi-luminescent center-integrated phosphors with high-quality and tunable white light emission is highly desirable for practical applications in solid-state lighting, but it remains challenging. Herein, a novel strategy of integrating dyes and perovskite nanocrystals into different locations of metal-organic frameworks (MOFs) to achieve high-performance white lighting-emitting diodes (WLEDs) is proposed. Based on the emerging dye-encapsulated MOF system, CsPbX nanocrystals (NCs) with a high PLQY and tunable bandgap were utilized as additional emission centers, contributing to spectral complementarity and energy transfer. The spatial separation of dyes and CsPbX NCs results in no mutual interference between each other during loading, enabling more flexible emission tuning. The resulting LED based on the combination of ZIF-8⊃pm567A/SRh101@CsPbClBr-SiO and a 460 nm blue LED chip exhibits exceptional Commission Internationale de l’Eclairage (CIE) coordinates of (0.329, 0.334), a moderate correlated color temperature (CCT) of 5681 K and a high color-rendering index (CRI) of 88. In addition, cold and warm WLEDs were also realized by only fine-tuning the loading amounts of CsPbClBr NCs, without sacrificing the high CRI. This strategy offers a new perspective for the design of white light-emitting phosphors with excellent color quality and facilitates the advancement of high-performance WLEDs.
Bibliographic Details
Royal Society of Chemistry (RSC)
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