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Light-emitting diodes enhanced by localized surface plasmon resonance

Xuefeng Gu12, Teng Qiu1*, Wenjun Zhang3 and Paul K Chu3

Author Affiliations

1 Department of Physics, Southeast University, Nanjing 211189, People's Republic of China

2 Current address: Chien-Shiung Wu College, Southeast University, Nanjing 211189, People’s Republic of China

3 Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, People's Republic of China

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Nanoscale Research Letters 2011, 6:199  doi:10.1186/1556-276X-6-199

Published: 8 March 2011


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.