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Design and Simulation of High Efficiency Silicon Light-Emitting Diodes
Published online by Cambridge University Press: 01 February 2011
Abstract
Four boron-implanted p-n junction silicon light-emitting diode structures were designed and simulated under an identical process flow by using Silvaco simulators.In the simulation, only boron-implant parameters and post-implant anneal conditions were varied to identify and compare the physical, electrical, and optical properties of the structures.It was found that a pillar structure with a wrapped p-n junction has the greatest radiative recombination rate. Regardless the structure type, the maximum radiative recombination rate always occurs within the p+ region. There exists a peak in the maximum radiative recombination rate when the anneal temperature increases from 700 to 1100 °C, and the anneal temperature at peak increases while the implant dose increases. Furthermore, the radiative recombination rate always increases with the implant dose but it saturates at a high dose. However, the radiative recombination rate does not change significantly with the implant energy.
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- Copyright © Materials Research Society 2007