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Light-emitting diodes enhanced by localized surface plasmon resonance.

Gu X, Qiu T, Zhang W, Chu PK - Nanoscale Res Lett (2011)

Bottom Line: The mechanism is based on the energy coupling effect between the emitted photons from the semiconductor and metallic nanoparticles fabricated by nanotechnology.In this review, we describe the mechanism of this coupling effect and summarize the common fabrication techniques.The prospect, including the potential to replace fluorescent/incandescent lighting devices as well as applications to flat panel displays and optoelectronics, and future challenges with regard to the design of metallic nanostructures and fabrication techniques are discussed.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Physics, Southeast University, Nanjing 211189, People's Republic of China. tqiu@seu.edu.cn.

ABSTRACT
Light-emitting diodes [LEDs] are of particular interest recently as their performance is approaching fluorescent/incandescent tubes. Moreover, their energy-saving property is attracting many researchers because of the huge energy crisis we are facing. Among all methods intending to enhance the efficiency and intensity of a conventional LED, localized surface plasmon resonance is a promising way. The mechanism is based on the energy coupling effect between the emitted photons from the semiconductor and metallic nanoparticles fabricated by nanotechnology. In this review, we describe the mechanism of this coupling effect and summarize the common fabrication techniques. The prospect, including the potential to replace fluorescent/incandescent lighting devices as well as applications to flat panel displays and optoelectronics, and future challenges with regard to the design of metallic nanostructures and fabrication techniques are discussed.

No MeSH data available.


Noble metallic NP layer deposited on or within a conventional LED to enhance efficiency of device. This new class of LEDs can be used in various compelling applications.
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Figure 2: Noble metallic NP layer deposited on or within a conventional LED to enhance efficiency of device. This new class of LEDs can be used in various compelling applications.

Mentions: In comparison with the aforementioned technology, localized surface plasmon [LSP] offers a unique advantage in tunability; that is, the optical properties resulting from LSP can be easily varied by altering the type, size, geometry, and interparticle distance of the metallic nanoparticles [NPs]. The other advantage of LSP-enhanced LEDs over SPP ones is less dissipation since the induced wave is locally confined and cannot propagate along the metal surface. Furthermore, the metal layer is no longer opaque, making emission from the metal side possible, and so metallic NPs instead of a continuous metal film can be used to enhance the performance of LEDs. Figure 2 schematically shows the story of this review: incorporation of noble metallic nanoparticles into LEDs leads to a new class of highly efficient solid-state light sources (top row); in order to get considerable enhancement, the extinction band of LSP must be close to the band-gap emission energy of the LED (middle row); and this new technology has found its applications in general lighting, flat panel displays, and ultrafast optoelectronic chips (bottom row). Recent improvements combined with the low cost and easy fabrication process make localized surface plasmon resonance [LSPR]-enhanced LEDs very attractive commercially.


Light-emitting diodes enhanced by localized surface plasmon resonance.

Gu X, Qiu T, Zhang W, Chu PK - Nanoscale Res Lett (2011)

Noble metallic NP layer deposited on or within a conventional LED to enhance efficiency of device. This new class of LEDs can be used in various compelling applications.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211255&req=5

Figure 2: Noble metallic NP layer deposited on or within a conventional LED to enhance efficiency of device. This new class of LEDs can be used in various compelling applications.
Mentions: In comparison with the aforementioned technology, localized surface plasmon [LSP] offers a unique advantage in tunability; that is, the optical properties resulting from LSP can be easily varied by altering the type, size, geometry, and interparticle distance of the metallic nanoparticles [NPs]. The other advantage of LSP-enhanced LEDs over SPP ones is less dissipation since the induced wave is locally confined and cannot propagate along the metal surface. Furthermore, the metal layer is no longer opaque, making emission from the metal side possible, and so metallic NPs instead of a continuous metal film can be used to enhance the performance of LEDs. Figure 2 schematically shows the story of this review: incorporation of noble metallic nanoparticles into LEDs leads to a new class of highly efficient solid-state light sources (top row); in order to get considerable enhancement, the extinction band of LSP must be close to the band-gap emission energy of the LED (middle row); and this new technology has found its applications in general lighting, flat panel displays, and ultrafast optoelectronic chips (bottom row). Recent improvements combined with the low cost and easy fabrication process make localized surface plasmon resonance [LSPR]-enhanced LEDs very attractive commercially.

Bottom Line: The mechanism is based on the energy coupling effect between the emitted photons from the semiconductor and metallic nanoparticles fabricated by nanotechnology.In this review, we describe the mechanism of this coupling effect and summarize the common fabrication techniques.The prospect, including the potential to replace fluorescent/incandescent lighting devices as well as applications to flat panel displays and optoelectronics, and future challenges with regard to the design of metallic nanostructures and fabrication techniques are discussed.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Physics, Southeast University, Nanjing 211189, People's Republic of China. tqiu@seu.edu.cn.

ABSTRACT
Light-emitting diodes [LEDs] are of particular interest recently as their performance is approaching fluorescent/incandescent tubes. Moreover, their energy-saving property is attracting many researchers because of the huge energy crisis we are facing. Among all methods intending to enhance the efficiency and intensity of a conventional LED, localized surface plasmon resonance is a promising way. The mechanism is based on the energy coupling effect between the emitted photons from the semiconductor and metallic nanoparticles fabricated by nanotechnology. In this review, we describe the mechanism of this coupling effect and summarize the common fabrication techniques. The prospect, including the potential to replace fluorescent/incandescent lighting devices as well as applications to flat panel displays and optoelectronics, and future challenges with regard to the design of metallic nanostructures and fabrication techniques are discussed.

No MeSH data available.