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Microwave-Assisted Heating Method toward Multicolor Quantum Dot-Based Phosphors with Much Improved Luminescence
Zhou, D.; Wang, Y.; Tian, P. F.; Jing, P. T.; Sun, M. L.; Chen, X.; Xu, X. W.; Li, D.; Mei, S. L.; Liu, X. Y.; Zhang, W. L.; Guo, R. Q.; Qu, S. N.; Zhang, H.
2018
Source PublicationAcs Applied Materials & Interfaces
ISSN1944-8244
Volume10Issue:32Pages:27160-27170
AbstractSolid-state highly photoluminescent quantum dot (QD)-based phosphors attract great scientific interests as color converters because of an increasing demand for white light-emitting devices. Herein, a microwave-assisted heating method is presented to fabricate multicolor QD-based phosphors within 30 s through microwave-assisted heating of the mixture of QDs and sodium silicate aqueous solution. In the composites, the formed cross-linked networks not only play as a matrix to prevent QD aggregation in solid state but also cause the variation of the refractive index around QDs and the QD surface optimization, which contributes to good stabilities and twice enhancement in photoluminescence quantum yields (69%) compared with the initial QD aqueous solution (33%). Using the QD-based phosphors as color conversion layers, white-light-emitting diodes were realized with controllable color temperature, high color purity, and high color-rendering index (90.3), which show a great potential in display and illumination. Furthermore, the luminescence lifetime of the QD-based phosphors is less than 25 ns. The potential application of the QD-based phosphors in visible light communication was also demonstrated, with the modulation bandwidth achieving 42 MHz.
Keywordaqueous quantum dot sodium silicate phosphors white-light-emitting diode visible light communication light-emitting-diodes cdte nanocrystals circular-dichroism highly luminescent color-converter white leds communication photoluminescence semiconductor fluorescence Science & Technology - Other Topics Materials Science
DOI10.1021/acsami.8b06323
Indexed BySCI ; EI
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ciomp.ac.cn/handle/181722/61060
Collection中国科学院长春光学精密机械与物理研究所
Recommended Citation
GB/T 7714
Zhou, D.,Wang, Y.,Tian, P. F.,et al. Microwave-Assisted Heating Method toward Multicolor Quantum Dot-Based Phosphors with Much Improved Luminescence[J]. Acs Applied Materials & Interfaces,2018,10(32):27160-27170.
APA Zhou, D..,Wang, Y..,Tian, P. F..,Jing, P. T..,Sun, M. L..,...&Zhang, H..(2018).Microwave-Assisted Heating Method toward Multicolor Quantum Dot-Based Phosphors with Much Improved Luminescence.Acs Applied Materials & Interfaces,10(32),27160-27170.
MLA Zhou, D.,et al."Microwave-Assisted Heating Method toward Multicolor Quantum Dot-Based Phosphors with Much Improved Luminescence".Acs Applied Materials & Interfaces 10.32(2018):27160-27170.
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