Intense enhancement of yellow luminescent carbon dots coupled with gold nanoparticles toward white LED

Zhang, Yijun; Zhang, Jiaqi; Zhang, Junwen; Lin, Sai; Huang, Yunyun; Yuan, Rongrong; Liang, Xiaojuan; Xiang, Weidong

doi:10.1016/j.dyepig.2017.01.043

Cited by 31 publications

(15 citation statements)

References 50 publications

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“…The characteristic absorption peaks located at 230 and 340 nm correspond to the p-p* transitions of the C]C and C]N bonds in the highenergy region (200-350 nm). [4][5][6] Interestingly, as presented in Fig. 1(c), the RCDs exhibited excitation-independent behavior.…”

Section: Resultsmentioning

confidence: 73%

“…S4(d , and C-N (1388 and 1496 cm À1 ) bonds were observed. 4,6,21 This suggests that the RCDs exhibit excellent water solubility so that the RCDs can be mutually solubilized with ethyl alcohol and AEAPMS. This is in good agreement with the result of the FTIR investigation of the WCDs-1 and WCDs-2, shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…† The results further conrm that the incorporation of N in the CDs is responsible for the red luminescence. 6 Besides, we have characterized the WCDs-1 and WCDs-2 with an XPS test. Similarly, as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…[1][2][3][4][5] Particularly, considerable efforts have been devoted to CD-based materials in W-LEDs. [4][5][6][7][8][9] It is interesting that CDs with the solvatochromism phenomenon of changing from blue to red in different solvents have been observed. Lin et al reported that CDs prepared from m-phenylenediamine exhibit emission at 400-500 nm in aqueous solution and PVA.…”

Section: Introductionmentioning

confidence: 99%

“…CDs can homogeneously disperse in AEAPMS to avoid aggregation. Meanwhile, silane-amine based materials have a good lmforming ability 6,18 due to the large surface area and surface functional groups. Therefore, the obtained CDs dispersed in AEAPMS have favorable photostability.…”

Section: Introductionmentioning

confidence: 99%

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Recent Advances in Carbon Dots for Bioanalysis and the Future Perspectives

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Modified Absorption and Emission Properties Leading to Intriguing Applications in Plasmonic–Excitonic Nanostructures

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years, great advances have been made to grow various shaped semiconductor nanocrystals (SNCs) like quantum dots, [7] nanowires, [8] nanorods (NR), [9] and other advanced shaped nanostructures, [10-12] with great precision. However, these semiconductor nanostructures have small extinction cross-sections (even smaller than geometric cross-section), leading to limited absorbance and emission quantum yields. This hinders the progress of semiconductor nanostructures in several areas ranging from clean energy production to various sensing applications. Among many promising solutions, integrating plasmonic nanoparticles (PNPs) with semiconductor nanostructures emerges as the most prominent way to alleviate aforementioned issue. The PNPs have greater extinction cross-section than SNCs (even greater than geometric cross-section), owing to light absorption and scattering by collective and coherent electron oscillations. [13,14] Moreover, these coherent oscillations can couple with electromagnetic wavelengths far greater than particle size, enabling them to guide light to subwavelength scales, thus overcoming diffraction limit. [15] Besides this, proper control over size and shape of plasmonic nanostructures enables engineering of their intrinsic properties to meet the criteria of required application. [16] For instance, by changing the aspect ratio (length to diameter ratio) of nanorods, one can cover wide spectral regions ranging from visible to near-infrared (NIR) regimes. [17] Thus, the integration of plasmonic and semiconductor nanostructures to obtain greater extinction cross-sections and modified properties in these hybrid nanostructures has received great attention from the research community over the past years. The properties of these hybrid nanostructures can be very different from the two nanoconstituents (metal and semiconductor nanostructures), owing to plasmon-exciton interactions. [18-20] Various configurations of metal/semiconductor nanostructures have been synthesized like metallic core/semiconductor shell, [21] semiconductor NR/metal nanoparticles (MNPs), [22] Janus metal/ semiconductor nanostructures, [23] and many others have been reported, [24-26] with varying absorption and emissive properties, targeting high performance applications. The energy transfer between metal-semiconductor nanostructures resulting from integration of PNPs and SNCs Hybrid nanostructures composed of metal and semiconducting nanocrystals have drawn tremendous attention owing to their extraordinary absorption and emission properties. The energy transfer in metal-semiconductor hybrids as a result of synergetic plasmon-exciton interactions leads to numerous applications in the field of solar energy harvesting, photocatalytic reactions, imaging, photonics, sensing, and many more. Various breakthroughs in advanced characterization techniques over the past decade have disclosed several factors affecting the energy transfer processes leading to modified absorption and emission properties in metal-semiconductor hybrids. Herein, various ...

show abstract

Intense enhancement of yellow luminescent carbon dots coupled with gold nanoparticles toward white LED

Cited by 31 publications

References 50 publications

Efficient and stable white fluorescent carbon dots and CD-based glass thin-films via screen-printing technology for use in W-LEDs

Efficient and stable white fluorescent carbon dots and CD-based glass thin-films via screen-printing technology for use in W-LEDs

Recent Advances in Carbon Dots for Bioanalysis and the Future Perspectives

Modified Absorption and Emission Properties Leading to Intriguing Applications in Plasmonic–Excitonic Nanostructures

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