Effects of undoped photo-absorption layers in modified uni-traveling carrier photodiode structures on quantum efficiency and bandwidth are reported. Modified uni-traveling carrier photodiode structures having different undoped photo-absorption layer thicknesses were fabricated and characterized. Efficiency and bandwidth of photodiodes having an optimized undoped photo-absorption layer were larger than those of photodiodes without such a layer, which agrees well with the theoretical analysis of the dynamic behavior of the photodiodes using drift-diffusion model. The results indicate that both the quantum efficiency and bandwidth of the uni-traveling carrier photodiode structures can be extended by incorporating an optimized thickness of undoped photo-absorption layer.
No takes yet. Share an insight, caveat, or question.
Jun et al. (2006) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: