Abstract
We demonstrate a method for improving photoluminescence of gallium arsenide semiconductor by simply coating a thin layer of Au nanoparticles on its surface. Further focused ion beam bombardment at the sputter-coated Au film was conducted to control the size, the distribution, and the morphology of the Au nanoparticles via the changes of the focused ion-beam irradiation conditions. Photoluminescence of GaAs coated with the Au nanoparticles with average size of 5 nm in diameter is enhanced to about threefold relative to that of pure GaAs. Numerical calculations were conducted based on finite-different time-domain method. Results indicated that the enhancement is mainly attributed to the contribution of local surface plasmon resonance of Au nanoparticles.
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Zhou, X., Wei, Q., Wang, L. et al. Enhanced photoluminescence from gallium arsenide semiconductor coated with Au nanoparticles. Appl. Phys. A 96, 637–641 (2009). https://doi.org/10.1007/s00339-009-5277-0
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DOI: https://doi.org/10.1007/s00339-009-5277-0