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Color-tunable mixed photoluminescence emission from Alq3 organic layer in metal-Alq3-metal surface plasmon structure.

Chen NC, Liao CC, Chen CC, Fan WT, Wu JH, Li JY, Chen SP, Huang BR, Lee LL - Nanoscale Res Lett (2014)

Bottom Line: The emission wavelength of the latter depends on the Alq3 thickness and can be tuned within the Alq3 fluorescent spectra.Therefore, a two-color broadband, color-tunable mixed PL structure was obtained.Obvious changes in the Commission Internationale d'Eclairage (CIE) coordinates and the corresponding emission colors of Au-Alq3-Au samples clearly varied with the Alq3 thickness (90, 130, and 156 nm).

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Electronic Engineering, Chang Gung University, Tao-Yuan 333, Taiwan ; Institute of Electro-Optical Engineering, Chang Gung University, Tao-Yuan 333, Taiwan.

ABSTRACT
This work reports the color-tunable mixed photoluminescence (PL) emission from an Alq3 organic layer in an Au-Alq3-Au plasmonic structure through the combination of organic fluorescence emission and another form of emission that is enabled by the surface plasmons in the plasmonic structure. The emission wavelength of the latter depends on the Alq3 thickness and can be tuned within the Alq3 fluorescent spectra. Therefore, a two-color broadband, color-tunable mixed PL structure was obtained. Obvious changes in the Commission Internationale d'Eclairage (CIE) coordinates and the corresponding emission colors of Au-Alq3-Au samples clearly varied with the Alq3 thickness (90, 130, and 156 nm).

No MeSH data available.


Schematic structures of samples (A) Alq3 only, (B) single-metal, (C) MDM.
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Figure 2: Schematic structures of samples (A) Alq3 only, (B) single-metal, (C) MDM.

Mentions: Based on an analysis of the dispersion curve, three MDM samples, A, B, and C, with Alq3 thicknesses of 90, 120, and 150 nm, respectively, embedded between two 20-nm-thick Au layers were fabricated. Two reference samples, consisting of glass/120-nm-thick Alq3 and glass/20-nm-thick Au/120-nm-thick Alq3, were fabricated and are shown in Figure 2a,b, respectively. The organic material was subjected to temperature-gradient sublimation under a high vacuum before use. The organic and metal layers were deposited by vacuum vapor deposition in a vacuum chamber with a base pressure of <10-6 Torr. The deposition system permitted the fabrication of the complete device structure in a single vacuum pump-down without breaking the vacuum. The deposition rate of organic layers was kept at approximately 0.1 nm/s. The area of the MDM structure was 3 × 3 cm2, defined by a shadow mask. Figure 2c shows the MDM structure.


Color-tunable mixed photoluminescence emission from Alq3 organic layer in metal-Alq3-metal surface plasmon structure.

Chen NC, Liao CC, Chen CC, Fan WT, Wu JH, Li JY, Chen SP, Huang BR, Lee LL - Nanoscale Res Lett (2014)

Schematic structures of samples (A) Alq3 only, (B) single-metal, (C) MDM.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4199778&req=5

Figure 2: Schematic structures of samples (A) Alq3 only, (B) single-metal, (C) MDM.
Mentions: Based on an analysis of the dispersion curve, three MDM samples, A, B, and C, with Alq3 thicknesses of 90, 120, and 150 nm, respectively, embedded between two 20-nm-thick Au layers were fabricated. Two reference samples, consisting of glass/120-nm-thick Alq3 and glass/20-nm-thick Au/120-nm-thick Alq3, were fabricated and are shown in Figure 2a,b, respectively. The organic material was subjected to temperature-gradient sublimation under a high vacuum before use. The organic and metal layers were deposited by vacuum vapor deposition in a vacuum chamber with a base pressure of <10-6 Torr. The deposition system permitted the fabrication of the complete device structure in a single vacuum pump-down without breaking the vacuum. The deposition rate of organic layers was kept at approximately 0.1 nm/s. The area of the MDM structure was 3 × 3 cm2, defined by a shadow mask. Figure 2c shows the MDM structure.

Bottom Line: The emission wavelength of the latter depends on the Alq3 thickness and can be tuned within the Alq3 fluorescent spectra.Therefore, a two-color broadband, color-tunable mixed PL structure was obtained.Obvious changes in the Commission Internationale d'Eclairage (CIE) coordinates and the corresponding emission colors of Au-Alq3-Au samples clearly varied with the Alq3 thickness (90, 130, and 156 nm).

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Electronic Engineering, Chang Gung University, Tao-Yuan 333, Taiwan ; Institute of Electro-Optical Engineering, Chang Gung University, Tao-Yuan 333, Taiwan.

ABSTRACT
This work reports the color-tunable mixed photoluminescence (PL) emission from an Alq3 organic layer in an Au-Alq3-Au plasmonic structure through the combination of organic fluorescence emission and another form of emission that is enabled by the surface plasmons in the plasmonic structure. The emission wavelength of the latter depends on the Alq3 thickness and can be tuned within the Alq3 fluorescent spectra. Therefore, a two-color broadband, color-tunable mixed PL structure was obtained. Obvious changes in the Commission Internationale d'Eclairage (CIE) coordinates and the corresponding emission colors of Au-Alq3-Au samples clearly varied with the Alq3 thickness (90, 130, and 156 nm).

No MeSH data available.