Journal ArticleDOI
Tunable emission of Cu (Mn)-doped ZnInS quantum dots via dopant interaction
Jiatao Zhu,Shiliang Mei,Wu Yang,Guilin Zhang,Qiuhang Chen,Wanlu Zhang,Ruiqian Guo +6 more
- Vol. 506, pp 27-35
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TLDR
The interaction mechanism between the Cu and Mn dopant luminescence centers is proposed in this work, which is rarely investigated in the previous report, showing a promising potential in high-quality white light output by integration of these QDs with blue chips.Abstract:
In this work, transition metal ion- doped zinc-based quantum dots (QDs) are synthesized via a greener controllable method to avoid the toxicity of the traditional cadmium-based QDs and broaden the tunable emission. Herein, the tunable emission of Cu-doped ZnInS/ZnS core-shell QDs (Cu:ZnInS/ZnS) can cover from 500 to 620 nm by varying the Cu dopant concentration from 1 to 20% and the maximum quantum yield can reach 49.8%. Based on the single-doped QDs, Cu,Mn co-doped ZnInS/ZnS core-shell QDs (Cu,Mn:ZnInS/ZnS) with a photoluminance (PL) quantum yield of 30.4% are obtained. All the as-synthesized QDs have the zinc blende structure and the average size is about 3.55 nm. Besides, the interaction mechanism between the Cu and Mn dopant luminescence centers is proposed in this work, which is rarely investigated in the previous report. Diffusion priority and energy transfer between these two dopants are supposed to play an important role in the co-doped QDs and Cu ions could affect the splitting of Mn d states. Color coordinates of these doped QDs show the line-tunability from (0.200, 0.397) to (0.408, 0.508) on the Commission Internationale de L'Eclairage (CIE) chromatic diagram, showing a promising potential in high-quality white light output by integration of these QDs with blue chips.read more
Citations
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Journal ArticleDOI
Highly luminescent water-soluble AgInS2/ZnS quantum dots-hydrogel composites for warm white LEDs
TL;DR: In this paper, an AgInS2/ZnS core/shell QDs were synthesized via a facile microwave-assisted aqueous method and the PL emission can be tuned from 540 to 622 nm by varying the Ag/In ratio and maximum quantum yield can reach 58.27%.
Journal ArticleDOI
Surface States Induced Photoluminescence Enhancement of Nitrogen-Doped Carbon Dots Via Post-Treatments
TL;DR: Results for post-treated NCDs demonstrate that surface functional groups are responsible for PL emission and provide new possibilities like multi-image sensing and lighting application.
Journal ArticleDOI
Highly-sensitive electrochemiluminescence biosensor for NT-proBNP using MoS2@Cu2S as signal-enhancer and multinary nanocrystals loaded in mesoporous UiO-66-NH2 as novel luminophore
Wang Chao,Lei Liu,Xuejing Liu,Chen Yu,Xueying Wang,Dawei Fan,Xuan Kuang,Xu Sun,Qin Wei,Huangxian Ju,Huangxian Ju +10 more
TL;DR: In this paper, a signal-on electrochemiluminescence (ECL) biosensor was proposed for the detection of NT-proBNP with a newly designed luminophore.
Journal ArticleDOI
A facile route for highly efficient color-tunable Cu-Ga-Se/ZnSe quantum dots
TL;DR: In this paper, a facile one-pot route directly dissolving copper iodide, gallium acetylacetonate and selenium powder as precursors into a mixed solution of dodecanethiol, oleylamine (OLA), and octadecene was developed to synthesize Cu-Ga-Se/ZnSe (CGSe) core/shell QDs.
Journal ArticleDOI
Eco-friendly quantum dots for liquid luminescent solar concentrators
TL;DR: In this article, the authors proposed the synthesis of green transition metal ion-doped semiconductor QDs and their use as luminophores in liquid luminous solar concentrators (LSCs).
References
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Journal ArticleDOI
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Quantum Dots and Their Multimodal Applications: A Review
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