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- W2105292380 abstract "In this paper, InGaN/GaN nanorod LEDs with various sizes are fabricated using self-assembled Ni nanomasks and inductively coupled plasma-reactive ion etching. Photoluminescence (PL) characteristics exhibit size-dependent, wavelength blue shifts of the emission spectra from the nanorod LEDs. Numerical analyses using a valence force field model and a self-consistent Poisson, Schrodinger, and drift-diffusion solver quantitatively describe the correlation between the wavelength blue shifts and the strain relaxation of multiple quantum wells embedded in nanorods with different averaged sizes. Time-resolved PL studies confirm that the array with a smaller size exhibits a shorter carrier lifetime at low temperature, giving rise to a stronger PL intensity. However, the PL intensity deteriorates at room temperature, compared to that of a larger size, possibly due to an increased number of surface states, which decreases the nonradiative lifetime, and hence reduces the internal quantum efficiency." @default.
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- W2105292380 date "2009-07-01" @default.
- W2105292380 modified "2023-10-18" @default.
- W2105292380 title "Size-Dependent Strain Relaxation and Optical Characteristics of InGaN/GaN Nanorod LEDs" @default.
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- W2105292380 doi "https://doi.org/10.1109/jstqe.2009.2015583" @default.
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